7951A75 | High-Purity Tank-Mount Pressure-Regulating Valve

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Outlet Pressure

For Use With

Inlet Pipe Size

Maximum Inlet Pressure

Less than 250 psi

250 psi to 499 psi

500 psi to 999 psi

1,000 psi to 3,999 psi

Body Material

Pipe Size

Outlet Pipe Size

Maximum Outlet Pressure Gauge Measurement

Material

Valve Function

Back-Pressure Regulation

Inlet Thread Type

Maximum Pressure

1,000 psi to 1,999 psi

2,000 psi to 2,999 psi

3,000 psi to 3,999 psi

Outlet Thread Type

Outlet Connection Port

Outlet Connection

Inlet CGA Number

Thread Type

Shape

Inlet Connection

Valve Type

Back-Pressure Regulator

Pressure Regulator

RoHS

Compliant

Compliant with Exemptions

Not Compliant

REACH

Compliant

Not Compliant

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Yes

DFARS Specialty Metals

Exempt

Export Control Classification Number (ECCN)

Fitting Connection

305 Products

Long-Life Pressure-Regulating Valves for Water, Oil, Air, and Inert Gas

For a longer service life than brass and cast iron valves, these have a durable bronze body. They automatically reduce a high, variable inlet pressure to a lower, stable outlet pressure. Adjust the outlet pressure within the range. All valves have an internal strainer to trap debris.

	Inlet			Outlet
	Pipe Size	Location	Max. Pressure, psi	Pipe Size	Location	Pressure Adjustment Method	End-to-End Lg.	For Use With	Temp. Range, ° F	Choose an Outlet Pressure, psi		Each
NPT Female







				Bronze Body—Buna-N Diaphragm and Seal with Internal Strainer

				1/4	Side	400	1/4	Side	Screw	3"	Water, Oil, Air, Inert Gas	32 to 180	2 to 25, 20 to 60, 20 to 100, 50 to 150	47345K11	0000000


				3/8	Side	400	3/8	Side	Screw	3 7/8"	Water, Oil, Air, Inert Gas	32 to 180	2 to 30, 20 to 70, 40 to 110, 90 to 150	47345K12	000000
				1/2	Side	400	1/2	Side	Screw	4 1/2"	Water, Oil, Air, Inert Gas	32 to 180	2 to 30, 10 to 50, 30 to 125, 50 to 150	47345K13	000000
				3/4	Side	400	3/4	Side	Screw	5 1/8"	Water, Oil, Air, Inert Gas	32 to 180	2 to 20, 10 to 35, 30 to 75, 50 to 110, 105 to 150	47345K14	000000
				1	Side	400	1	Side	Screw	5 7/8"	Water, Oil, Air, Inert Gas	32 to 180	2 to 20, 10 to 45, 20 to 60, 55 to 100, 90 to 150	47345K15	000000
				1 1/4	Side	400	1 1/4	Side	Screw	6 3/4"	Water, Oil, Air, Inert Gas	32 to 180	2 to 15, 10 to 30, 20 to 50, 45 to 100, 90 to 150	47345K16	00000000
				1 1/2	Side	400	1 1/2	Side	Screw	6 3/4"	Water, Oil, Air, Inert Gas	32 to 180	2 to 15, 10 to 30, 20 to 50, 45 to 100, 90 to 150	47345K17	00000000
				2	Side	400	2	Side	Screw	9 1/4"	Water, Oil, Air, Inert Gas	32 to 180	2 to 20, 10 to 60, 20 to 100, 90 to 150	47345K18	00000000

Low-Pressure-Regulating Valves for Water

Designed for excellent performance at low pressures, these valves respond to even the slightest inlet pressure changes to maintain a lower, stable outlet pressure. Adjust the outlet pressure within the range. Valves have an internal strainer to trap debris.

	Inlet			Outlet
	Pipe Size	Location	Max. Pressure, psi	Pipe Size	Location	Pressure Adjustment Method	End-to-End Lg.	For Use With	Temp. Range, ° F	Choose an Outlet Pressure, psi		Each
NPT Female







				Brass Body—Buna-N-Coated Nylon Diaphragm and 303 Stainless Steel Seal with Internal Strainer

				1/4	Side	300	1/4	Side	T-Handle	4 1/4"	Water	0 to 120	0 to 8, 0 to 20, 0 to 50	3878T41	0000000

Vibration-Damping Pressure-Regulating Valves for Water, Oil, Air, and Inert Gas

A cast iron body absorbs vibration from pressure changes to reduce wear and noise in your pipeline. These valves automatically reduce a high, variable inlet pressure to a lower, stable outlet pressure. Adjust the outlet pressure within the range.

Internal Strainer—Internal strainers trap debris.

	Inlet			Outlet
	Pipe Size	Location	Max. Pressure, psi	Pipe Size	Location	Pressure Adjustment Method	End-to-End Lg.	For Use With	Temp. Range, ° F	Choose an Outlet Pressure, psi		Each
NPT Female







				Cast Iron Body—Buna-N Diaphragm and Seal with Internal Strainer

				1/4	Side	200	1/4	Side	Screw	3"	Water, Oil, Air, Inert Gas	32 to 180	2 to 25, 20 to 60	4674K41	0000000


				3/8	Side	200	3/8	Side	Screw	3 7/8"	Water, Oil, Air, Inert Gas	32 to 180	2 to 30, 20 to 70, 40 to 110, 90 to 150	4674K42	000000
				1/2	Side	200	1/2	Side	Screw	4 1/2"	Water, Oil, Air, Inert Gas	32 to 180	2 to 30, 10 to 50, 30 to 125, 50 to 125	4674K43	000000
				3/4	Side	200	3/4	Side	Screw	5 1/8"	Water, Oil, Air, Inert Gas	32 to 180	2 to 20, 10 to 35, 30 to 75, 50 to 110, 105 to 125	4674K44	000000
				1	Side	200	1	Side	Screw	5 7/8"	Water, Oil, Air, Inert Gas	32 to 180	2 to 20, 10 to 45, 20 to 60, 55 to 100, 90 to 125	4674K45	000000
				1 1/4	Side	200	1 1/4	Side	Screw	6 3/4"	Water, Oil, Air, Inert Gas	32 to 180	2 to 15, 10 to 30, 20 to 50, 45 to 100, 90 to 150	4674K46	000000
				1 1/2	Side	200	1 1/2	Side	Screw	6 3/4"	Water, Oil, Air, Inert Gas	32 to 180	2 to 15, 10 to 30, 20 to 50, 45 to 100, 90 to 125	4674K47	000000
				2	Side	200	2	Side	Screw	9 1/4"	Water, Oil, Air, Inert Gas	32 to 180	2 to 20, 10 to 60, 20 to 100, 90 to 125	4674K48	00000000




						Cast Iron Body—Fluoroelastomer Diaphragm and 420 Stainless Steel Seal

						3/8	Side	250	3/8	Side	Screw	4 1/4"	Water, Oil, Air, Inert Gas	32 to 300	0 to 10, 10 to 50, 40 to 100, 100 to 200	9796K11	000000


						1/2	Side	250	1/2	Side	Screw	3 5/8"	Water, Oil, Air, Inert Gas	32 to 300	0 to 10, 10 to 50, 40 to 100, 100 to 200	9796K12	000000
						3/4	Side	250	3/4	Side	Screw	3 5/8"	Water, Oil, Air, Inert Gas	32 to 300	0 to 10, 10 to 50, 40 to 100, 100 to 200	9796K13	000000
						1	Side	250	1	Side	Screw	4 1/2"	Water, Oil, Air, Inert Gas	32 to 300	0 to 10, 10 to 30, 30 to 50, 40 to 85	9796K14	000000
						2	Side	250	2	Side	Screw	6 1/2"	Water, Oil, Air, Inert Gas	32 to 300	0 to 10, 10 to 30, 30 to 50, 40 to 85	9796K15	000000

Tank-Mount Pressure-Regulating Valves for Air and Inert Gas

These valves automatically reduce a high inlet pressure from compressed gas tanks to a lower, stable outlet pressure. All have Compressed Gas Association (CGA) numbered inlet fittings for secure connections to compressed gas tanks. Choose a valve with the same CGA number as your tank and other system components. Valves have a gauge to monitor outlet pressure and a gauge to monitor inlet pressure from the tank.

Choose a valve with a maximum outlet pressure that’s approximately twice your application’s normal operating pressure. Your operating pressure should never exceed 75% of the valve’s maximum outlet pressure.

Single Stage


NPT Male Outlet × Male Inlet Single-Stage Valves with T-Handle	Female Outlet × Female Inlet Single-Stage Valves with Knob	Female Outlet × Male Inlet Single-Stage Valves with T-Handle	UNF Male Outlet × Female Inlet Single-Stage Valves with T-Handle

UNF Male Outlet × Female Inlet Single-Stage Valves with Knob	Flared Outlet × Male Inlet Single-Stage Valves	UNF Male Outlet x Male Inlet Single-Stage Valves with T-Handle	UNF Male Outlet × Male Inlet Single-Stage Valves With Knob

Single-stage valves reduce pressure in one step, which causes the outlet pressure to fluctuate slightly as you empty the tank. They’re best for applications where a constant outlet pressure isn’t critical.

37° Flared Outlet Connection and 45° Flared Outlet Connection—Valves with flared tube outlet fittings form a tight seal on metal tubing.

Brass Body—Valves with a brass body have a longer service life than valves with a brass and steel body.

Stainless Steel Diaphragm—Valves with a stainless steel diaphragm can withstand harsh environments.

	Inlet				Outlet				Material
	CGA No.	Location	Thread Direction	Pressure Gauge Reading Range, psi	Location	Thread Direction	Pressure Range, psi	Pressure Adjustment Method	Body	Seal	Diaphragm	Temp. Range, ° F		Each
For Argon, Helium, and Nitrogen







				37° Flared UNF Male Outlet × NGO Male Inlet

				580	Side	Right Hand	0 to 4,000	Side	Right Hand	10 to 200	—	Brass	Polyurethane Rubber	Neoprene/Nylon	-20 to 120	66325A42	0000000




						45° Flared UN/UNF (SAE 45°) Male Outlet × NGO Male Inlet

						580	Side	Right Hand	0 to 4,000	Side	Right Hand	0 to 250	T-Handle	Brass	PTFE	Neoprene	-20 to 120	3687N113	000000


						580	Side	Right Hand	0 to 4,000	Side	Right Hand	0 to 500	T-Handle	Brass	PTFE	Neoprene	-20 to 120	66325A23	000000




								5/8"-18 UNF Female Outlet × NGO Male Inlet

								580	Side	Right Hand	0 to 4,000	Side	Right Hand	0 to 125	T-Handle	Brass	PTFE	Stainless Steel	-20 to 120	3687N117	000000




										9/16"-18 UNF Male Outlet × NGO Male Inlet

										580	Side	Right Hand	0 to 4,000	Side	Right Hand	0 to 50	T-Handle	Brass	PTFE	Neoprene	-20 to 120	3687N115	000000


										580	Side	Right Hand	0 to 4,000	Side	Right Hand	0 to 125	T-Handle	Brass	PTFE	Rubber	-20 to 120	7897A38	000000
										580	Side	Right Hand	0 to 4,000	Side	Right Hand	0 to 145	Knob	Brass/Steel	PTFE	Rubber	-20 to 120	7897A65	000000
										580	Side	Right Hand	0 to 4,000	Side	Right Hand	0 to 200	T-Handle	Brass	PTFE	Rubber	-20 to 120	7897A12	000000


										For Carbon Dioxide







														5/8"-18 UNF Female Outlet × NGO Female Inlet

														320	Side	Right Hand	0 to 4,000	Side	Right Hand	0 to 145	Knob	Brass	PTFE	Neoprene	-20 to 120	3687N112	000000




																9/16"-18 UNF Male Outlet × NGO Female Inlet

																320	Side	Right Hand	0 to 4,000	Side	Right Hand	0 to 125	T-Handle	Brass	PTFE	Rubber	-20 to 120	7897A39	000000


																For Oxygen







		9/16"-18 UNF Male Outlet × NGO Female Inlet

		540	Side															Right Hand	0 to 4,000	Side	Left Hand	0 to 50	Knob	Brass	PTFE	Neoprene	-20 to 120	3687N111	000000


		540	Side															Right Hand	0 to 4,000	Side	Right Hand	0 to 50	T-Handle	Brass	PTFE	Stainless Steel	-20 to 120	3687N116	000000
		540	Side															Right Hand	0 to 4,000	Side	Right Hand	0 to 125	T-Handle	Brass	PTFE	Rubber	-20 to 120	7897A31	000000
		540	Side															Right Hand	0 to 4,000	Side	Right Hand	0 to 125	T-Handle	Brass	PTFE	Stainless Steel	-20 to 120	7897A51	000000
		540	Side	Right Hand														0 to 4,000	Side	Right Hand	0 to 145	Knob	Brass/Steel	PTFE	Rubber	-20 to 120	7897A61	000000
		540	Side	Right Hand	0 to 4,000													Side	Right Hand	0 to 200	T-Handle	Brass	PTFE	Rubber	-20 to 120	7897A1	000000
		540	Side	Right Hand	0 to 4,000													Side	Right Hand	0 to 200	T-Handle	Brass	PTFE	Stainless Steel	-20 to 120	3687N118	000000


		For Air







						1/4 NPT Male Outlet × NGO Male Inlet

						590	Side											Left Hand	0 to 4,000	Side	Right Hand	0 to 125	T-Handle	Brass	PTFE	Rubber	-20 to 120	7897A59	000000


						590	Side											Left Hand	0 to 4,000	Side	Right Hand	0 to 145	Knob	Brass/Steel	PTFE	Rubber	-20 to 120	7897A56	000000


						For Breathable Air







																		9/16"-18 UNF Male Outlet × NGO Female Inlet

																		346	Side	Right Hand	0 to 4,000	Side	Right Hand	0 to 125	T-Handle	Brass	PTFE	Rubber	-20 to 120	7897A57	000000


										346	Side							Right Hand	0 to 4,000	Side	Right Hand	0 to 200	T-Handle	Brass	PTFE	Rubber	-20 to 120	7897A58	000000

Two Stage


NPT Female Outlet × Female Inlet Two-Stage Valves with T-Handle	NPT Female Outlet × Male Inlet Two-Stage Valves with T-Handle	NPT Male Outlet × Male Inlet Two-Stage Valves with T-Handle

UNF Female Outlet x Female Inlet Two-Stage Valves with T-Handle	UNF Female Outlet x Male Inlet Two-Stage Valves with T-Handle	UNF Male Outlet × Female Inlet Two-Stage Valves with T-Handle

Two-stage valves progressively reduce pressure over two steps for more consistent outlet pressure at all times. They’re often used in applications that require a constant outlet pressure regardless of the tank level.

Brass Body—Valves with a brass body have a longer service life than valves with a brass and steel body.

Stainless Steel Diaphragm—Valves with a stainless steel diaphragm can withstand harsh environments.

	Inlet				Outlet				Material
	CGA No.	Location	Thread Direction	Pressure Gauge Reading Range, psi	Location	Thread Direction	Pressure Range, psi	Pressure Adjustment Method	Body	Seal	Diaphragm	Temp. Range, ° F		Each
For Argon, Helium, and Nitrogen







				1/4 NPT Female Outlet × NGO Male Inlet

				580	Side	Right Hand	0 to 4,000	Side	Right Hand	0 to 250	T-Handle	Brass	PTFE	Neoprene	-20 to 120	3687N122	0000000


				580	Side	Right Hand	0 to 4,000	Side	Right Hand	0 to 250	T-Handle	Brass	PTFE	Stainless Steel	-20 to 120	3687N126	000000




						5/8"-18 UNF Female Outlet × NGO Male Inlet

						580	Side	Right Hand	0 to 4,000	Side	Right Hand	0 to 50	T-Handle	Brass	PTFE	Neoprene	-20 to 120	3687N121	000000


						580	Side	Right Hand	0 to 4,000	Side	Right Hand	0 to 50	T-Handle	Brass	PTFE	Stainless Steel	-20 to 120	7897A22	000000
						580	Side	Right Hand	0 to 4,000	Side	Right Hand	0 to 125	T-Handle	Brass/Steel	PTFE	Rubber	-20 to 120	7897A16	000000
						580	Side	Right Hand	0 to 4,000	Side	Right Hand	0 to 125	T-Handle	Brass	PTFE	Stainless Steel	-20 to 120	7897A23	000000


						For Carbon Dioxide







										1/4 NPT Female Outlet × NGO Female Inlet

										320	Side	Right Hand	0 to 4,000	Side	Right Hand	0 to 250	T-Handle	Brass	PTFE	Neoprene	-20 to 120	3687N124	000000


										320	Side	Right Hand	0 to 4,000	Side	Right Hand	0 to 250	T-Handle	Brass	PTFE	Stainless Steel	-20 to 120	3687N129	000000




												5/8"-18 UNF Female Outlet × NGO Female Inlet

												320	Side	Right Hand	0 to 4,000	Side	Right Hand	0 to 125	T-Handle	Brass/Steel	PTFE	Rubber	-20 to 120	7897A17	000000


												For Oxygen







																1/4 NPT Female Outlet × NGO Female Inlet

																540	Side	Right Hand	0 to 4,000	Side	Right Hand	0 to 250	T-Handle	Brass	PTFE	Neoprene	-20 to 120	3687N12	000000


																540	Side	Right Hand	0 to 4,000	Side	Right Hand	0 to 250	T-Handle	Brass	PTFE	Stainless Steel	-20 to 120	7897A75	000000




																9/16"-18 UNF Male Outlet × NGO Female Inlet

		540	Side													Right Hand	0 to 4,000	Side	Right Hand	0 to 50	T-Handle	Brass	PTFE	Neoprene	-20 to 120	3687N119	000000


		540	Side													Right Hand	0 to 4,000	Side	Right Hand	0 to 50	T-Handle	Brass	PTFE	Stainless Steel	-20 to 120	3687N125	000000
		540	Side													Right Hand	0 to 4,000	Side	Right Hand	0 to 125	T-Handle	Brass/Steel	PTFE	Rubber	-20 to 120	7897A3	000000
		540	Side													Right Hand	0 to 4,000	Side	Right Hand	0 to 125	T-Handle	Brass	PTFE	Stainless Steel	-20 to 120	7897A74	000000


		For Air







																1/4 NPT Male Outlet × NGO Male Inlet

																590	Side	Left Hand	0 to 4,000	Side	Right Hand	0 to 125	T-Handle	Brass	PTFE	Stainless Steel	-20 to 120	3687N131	000000


																590	Side	Left Hand	0 to 4,000	Side	Right Hand	0 to 250	T-Handle	Brass	PTFE	Stainless Steel	-20 to 120	3687N132	000000


						For Breathable Air







																1/4 NPT Female Outlet × NGO Female Inlet

																346	Side	Right Hand	0 to 4,000	Side	Right Hand	0 to 250	T-Handle	Brass	PTFE	Stainless Steel	-20 to 120	3687N135	000000

Quick-Set Pressure-Regulating Valves for Water

Change outlet pressure without using a gauge—turn the dial to adjust the outlet pressure in 5 or 10 psi increments. These valves automatically reduce a high, variable inlet pressure to a lower, stable outlet pressure. They also have an internal strainer to trap debris. Union fittings on both ends of the valves disassemble for easy valve installation and removal. All of these valves meet Canadian safety standards for pressure-reducing valves. Some also meet American and international plumbing safety and performance standards.

Brass Body—Brass valves are durable and have a long service life. Their gauge ports let you attach a pressure gauge to measure the pressure flowing in and out of the valve.

Stainless Steel Body—Stainless steel valves resist corrosion better than brass valves.

	Inlet			Outlet				Gauge Port
	Pipe Size	Location	Max. Pressure, psi	Pipe Size	Location	Pressure Range, psi	Pressure Adjustment Method	Pipe Size	Location	Connection	End-to-End Lg.	For Use With	Temp. Range, ° F	Certification	Specs. Met		Each
NPT Female







				Brass Body—EPDM Diaphragm and Seal

				1/2	Side	250	1/2	Side	25 to 90	Dial	1/4	Side	NPT Female	4 7/8"	Water	33 to 140	CSA Certified	—	45805K66	0000000


				3/4	Side	250	3/4	Side	25 to 90	Dial	1/4	Side	NPT Female	5 13/64"	Water	33 to 140	CSA Certified	—	45805K67	000000
				1	Side	250	1	Side	25 to 90	Dial	1/4	Side	NPT Female	6 1/16"	Water	33 to 140	CSA Certified	—	45805K68	000000
				1 1/4	Side	250	1 1/4	Side	25 to 90	Dial	1/4	Side	NPT Female	6 47/64"	Water	33 to 140	CSA Certified	—	45805K69	000000
				1 1/2	Side	250	1 1/2	Side	25 to 90	Dial	1/4	Side	NPT Female	7 7/8"	Water	33 to 140	CSA Certified	—	45805K71	000000
				2	Side	250	2	Side	25 to 90	Dial	1/4	Side	NPT Female	8 37/64"	Water	33 to 140	CSA Certified	—	45805K72	000000




						Stainless Steel Body—EPDM Diaphragm and Seal

						3/4	Side	300	3/4	Side	20 to 90	Dial	—	—	—	6 11/16"	Water	33 to 180	ASSE 1003 Listed, CSA Certified, IAPMO Listed	CAN/CSA-B356	45805K823	000000


						1	Side	300	1	Side	20 to 90	Dial	—	—	—	6 51/64"	Water	33 to 180	ASSE 1003 Listed, CSA Certified, IAPMO Listed	CAN/CSA-B356	45805K824	000000

Miniature Ultra-High-Pressure-Regulating Valves for Water, Air, and Inert Gas

For extremely high-pressure applications in tight spots, these valves handle the same inlet pressures as other ultra-high-pressure-regulating valves within a smaller footprint. They automatically reduce a high, variable inlet pressure to a lower, stable outlet pressure. Adjust the outlet pressure within the range. All have two gauge ports. Body is nickel-plated aluminum for good corrosion resistance. Valves are no-bleed style, so they keep the process gas contained within the valve.

	Inlet			Outlet				Gauge Port
	Pipe Size	Location	Max. Pressure, psi	Pipe Size	Location	Pressure Adjustment Method	Pressure Gauge Included	Pipe Size	Location	Connection	End-to-End Lg.	For Use With	Temp. Range, ° F	Choose an Outlet Pressure, psi		Each
NPTF Female







				Nickel-Plated Aluminum Body—Buna-N Seal

				1/4	Side	6,000	1/4	Side	Knob	No	1/4	Side	NPTF Female	1 5/8"	Water, Air, Argon	-15 to 165	0 to 80, 0 to 140, 0 to 220	4428T23	0000000


				1/4	Side	6,000	1/4	Side	Knob	No	1/4	Side	NPTF Female	1 5/8"	Water, Air, Argon	-15 to 165	0 to 700, 0 to 1,200, 0 to 1,800	4428T24	000000

High-Pressure-Regulating Valves for Water, Oil, Air, and Inert Gas

Image of Product. Front orientation. Contains Annotated. Pressure-Regulating Valves. High-Pressure-Regulating Valves for Water, Oil, Air, and Inert Gas.

Withstand more than six times the inlet pressure of standard pressure-regulating valves. These valves automatically reduce a high, variable inlet pressure to a lower, stable outlet pressure. Adjust the outlet pressure within the range. Valves have a 303 stainless steel body for corrosion resistance in harsh environments.

	Inlet			Outlet
	Pipe Size	Location	Max. Pressure, psi	Pipe Size	Location	Pressure Adjustment Method	Port-to-Port Lg.	For Use With	Temp. Range, ° F	Choose an Outlet Pressure, psi		Each
NPT Female







				303 Stainless Steel Body—PTFE Seal

				2	Side	3,000	2	Bottom	Screw	3"	Water, Oil, Air, Inert Gas	32 to 300	100 to 450, 250 to 1,200, 500 to 2,200	4256T16	000000000

Pressure-Regulating Valves for Steam

Automatically reduce a high, variable inlet pressure in your steam system to a lower, stable outlet pressure. Adjust the outlet pressure within the range. These valves have a cast iron body that absorbs vibration from pressure changes to reduce wear and noise in your pipeline.

Internal Strainer—Internal strainers trap debris.

	Valves												Repair Kits
	Inlet			Outlet
	Pipe Size	Location	Max. Pressure, psi	Pipe Size	Location	Pressure Adjustment Method	End-to-End Lg.	For Use With	Temp. Range, ° F	Choose an Outlet Pressure, psi		Each		Each
NPT Female







				Cast Iron Body—Bronze Diaphragm and 420 Stainless Steel Seal

				1/2	Side	250	1/2	Side	Screw	3 5/8"	Steam	-20 to 400	0 to 10, 10 to 50, 40 to 100, 100 to 200	9796K38	0000000	9796K96	000000


				3/4	Side	250	3/4	Side	Screw	3 5/8"	Steam	-20 to 400	0 to 10, 10 to 50, 40 to 100, 100 to 200	9796K39	000000	9796K96	00000
				1	Side	250	1	Side	Screw	4 1/2"	Steam	-20 to 400	0 to 10, 10 to 30, 30 to 50, 40 to 85	9796K91	000000	9796K97	000000
				1 1/4	Side	250	1 1/4	Side	Screw	4 1/2"	Steam	-20 to 400	0 to 10, 10 to 30, 30 to 50, 40 to 85	9796K92	000000	9796K97	000000
				1 1/2	Side	250	1 1/2	Side	Screw	6 1/2"	Steam	-20 to 400	0 to 10, 10 to 30, 30 to 50, 40 to 85	9796K93	000000	9796K99	000000
				2	Side	250	2	Side	Screw	6 1/2"	Steam	-20 to 400	0 to 10, 10 to 30, 30 to 50, 40 to 85	9796K94	000000	9796K99	000000




						Cast Iron Body—Bronze Diaphragm and PTFE Seal with Internal Strainer

						1/4	Side	150	1/4	Side	Screw	3"	Steam	-20 to 400	2 to 25, 20 to 60, 30 to 100	4674K61	000000	———	0


						3/8	Side	150	3/8	Side	Screw	3 7/8"	Steam	-20 to 400	2 to 30, 20 to 70, 90 to 150	4674K62	000000	———	0
						1/2	Side	150	1/2	Side	Screw	4 1/2"	Steam	-20 to 400	2 to 30, 10 to 50, 30 to 125, 50 to 150	4674K63	000000	4674K91	000000
						3/4	Side	150	3/4	Side	Screw	5 1/8"	Steam	-20 to 400	2 to 20, 10 to 35, 30 to 75, 50 to 110, 105 to 150	4674K64	000000	4674K92	000000
						1	Side	150	1	Side	Screw	5 7/8"	Steam	-20 to 400	2 to 20, 10 to 45, 20 to 60, 55 to 100, 90 to 150	4674K65	000000	4674K93	000000
						1 1/4	Side	150	1 1/4	Side	Screw	6 3/4"	Steam	-20 to 400	2 to 15, 10 to 30, 20 to 50, 45 to 100, 90 to 150	4674K66	000000	4674K94	000000
						1 1/2	Side	150	1 1/2	Side	Screw	6 3/4"	Steam	-20 to 400	2 to 15, 10 to 30, 20 to 50, 45 to 100, 90 to 150	4674K67	000000	4674K94	000000
						2	Side	150	2	Side	Screw	9 1/4"	Steam	-20 to 400	2 to 20, 10 to 60, 20 to 100, 90 to 150	4674K68	00000000	4674K95	000000

Panel-Mount High-Pressure-Regulating Valves for Air and Inert Gas

Withstand inlet pressures up to 3,500 psi. These valves automatically reduce a high, variable inlet pressure to a lower, stable outlet pressure. Adjust the outlet pressure within the range. Valves have threads below the adjustment knob and come with a panel-mount nut. All have two gauge ports. An internal strainer traps debris.

	Inlet			Outlet				Gauge Port
	Pipe Size	Location	Max. Pressure, psi	Pipe Size	Location	Pressure Adjustment Method	Pressure Gauge Included	Pipe Size	Location	Connection	End-to-End Lg.	Panel Cutout Dia.	For Use With	Temp. Range, ° F	Specs. Met	Choose an Outlet Pressure, psi		Each
NPT Female







				Brass Body—316 Stainless Steel Diaphragm and PTFE Seal with Internal Strainer

				1/4	Side	3,500	1/4	Side	Knob	No	1/4	Side	NPT Female	2"	1 3/8"	Air, Nitrogen, Argon, Helium	-40 to 165	ASME B31.3	0 to 25, 0 to 50, 0 to 100, 0 to 250, 0 to 500	3811T11	0000000

Pressure-Regulating Valves for Water, Oil, Air, and Inert Gas


Valves with Buna-N Diaphragm	Valves with Buna-N Diaphragm and Gauge Port	Valves with Neoprene Diaphragm	Valves with Neoprene Diaphragm and Gauge Port

These valves automatically reduce a high, variable inlet pressure to a lower, stable outlet pressure. Adjust the outlet pressure within the range.

Neoprene Diaphragm—Valves with a neoprene diaphragm have higher flow rates than valves with a Buna-N diaphragm.

Internal Strainer—Internal strainers trap debris.

Pressure-Regulating Valves with 1/4 NPT Gauge Port—Gauge ports let you attach a pressure gauge to monitor outlet pressure.

	Inlet			Outlet						Pressure-Regulating Valves		Pressure-Regulating Valves with 1/4 NPT Gauge Port
	Pipe Size	Location	Max. Pressure, psi	Pipe Size	Location	End-to-End Lg.	For Use With	Temp. Range, ° F	Choose an Outlet Pressure, psi		Each		Each
NPT Female







				Brass Body—Buna-N Diaphragm and Seal with Internal Strainer

				1/4	Side	250	1/4	Side	2 1/4"	Water, Oil, Air, Inert Gas	32 to 180	2 to 30, 10 to 50, 25 to 90, 80 to 120, 100 to 180	4677K51	0000000	4677K61	0000000


				3/8	Side	250	3/8	Side	2 1/4"	Water, Oil, Air, Inert Gas	32 to 180	2 to 30, 10 to 50, 25 to 90, 80 to 120, 100 to 180	4677K55	000000	4677K65	000000




						Brass Body—Neoprene Diaphragm and Buna-N Seal

						1/4	Side	400	1/4	Side	2 1/2"	Water, Oil, Air, Inert Gas	32 to 180	0 to 5, 2 to 35, 20 to 70, 60 to 125, 75 to 200, 100 to 250	5022K21	000000	5022K41	000000


						3/8	Side	400	3/8	Side	2 1/2"	Water, Oil, Air, Inert Gas	32 to 180	0 to 5, 2 to 35, 20 to 70, 60 to 125, 75 to 200, 100 to 250	5022K23	000000	5022K43	000000
						1/2	Side	400	1/2	Side	2 7/8"	Water, Oil, Air, Inert Gas	32 to 180	0 to 5, 2 to 25, 20 to 60, 40 to 80, 75 to 125, 100 to 250	5022K25	000000	5022K45	000000

Back-Pressure-Regulating Valves for Air and Inert Gas

Often used to protect equipment running on air compressors, these valves obstruct flow to maintain sufficient operating pressure in your system. If the system pressure exceeds the set pressure, they exhaust through the unthreaded relief port. Adjust the set pressure within the range. Valves have two gauge ports.

	Inlet			Outlet				Gauge Port
	Pipe Size	Location	Max. Pressure, psi	Pipe Size	Location	Pressure Adjustment Method	Pressure Gauge Included	Pipe Size	Location	Connection	Relief Port Location	End-to-End Lg.	For Use With	Temp. Range, ° F	Choose an Outlet Pressure, psi		Each
NPT Female







				Aluminum Body—Buna-N Diaphragm and Seal

				1/4	Side	250	1/4	Side	Knob	No	1/4	Side	NPT Female	Side	3"	Air, Inert Gas	0 to 150	0 to 2, 0 to 10, 0 to 30, 0 to 60, 0 to 150	4783K51	0000000


				3/8	Side	250	3/8	Side	Knob	No	1/4	Side	NPT Female	Side	3"	Air, Inert Gas	0 to 150	0 to 2, 0 to 10, 0 to 30, 0 to 60, 0 to 150	4783K53	000000
				1/2	Side	250	1/2	Side	Knob	No	1/4	Side	NPT Female	Side	3"	Air, Inert Gas	0 to 150	0 to 2, 0 to 10, 0 to 30, 0 to 60, 0 to 150	4783K55	000000

Panel-Mount Ultra-High-Pressure-Regulating Valves for Air and Inert Gas

These valves are rated for inlet pressures up to 6,000 psi. They automatically reduce a high, variable inlet pressure to a lower, stable outlet pressure. Adjust the outlet pressure within the range. Threads below the adjustment knob and an included mounting bracket let you install these valves in instrument panels. They have two gauge ports. An internal strainer traps debris.

	Inlet			Outlet				Gauge Port
	Pipe Size	Location	Max. Pressure, psi	Pipe Size	Location	Pressure Adjustment Method	Pressure Gauge Included	Pipe Size	Location	Connection	End-to-End Lg.	Panel Cutout Dia.	For Use With	Temp. Range, ° F	Specs. Met	Choose an Outlet Pressure, psi		Each
NPT Female







				Brass Body—Polyimide Seal with Internal Strainer

				1/4	Side	6,000	1/4	Side	Knob	No	1/4	Side	NPT Female	2 1/8"	2 1/4"	Air, Nitrogen, Argon, Helium	-40 to 165	ASME B31.3	0 to 500, 0 to 800, 10 to 1,500, 15 to 2,500, 25 to 4,000, 50 to 6,000	3950T21	000000000

Cleaned and Bagged Panel-Mount Pressure-Regulating Valves for Air and Inert Gas

Commonly used for oxygen service and other high-purity applications, these valves come cleaned and bagged to prevent contamination. All automatically reduce a high, variable inlet pressure to a lower, stable outlet pressure. Adjust the outlet pressure within the range. Valves have threads below the adjustment knob and come with a panel-mount nut. They can also be surface mounted. All have two gauge ports. Body is 316 stainless steel for exceptional corrosion resistance. Valves are no-bleed style, so they keep process gases contained in the valve.

	Inlet			Outlet					Gauge Port
	Pipe Size	Location	Max. Pressure, psi	Pipe Size	Location	Pressure Range, psi	Pressure Adjustment Method	Pressure Gauge Included	Pipe Size	Location	Connection	End-to-End Lg.	Panel Cutout Dia.	For Use With	Temp. Range, ° F		Each
NPT Female







				316 Stainless Steel Body—316 Stainless Steel Diaphragm and PTFE Seal

				1/4	Side	3,500	1/4	Side	0 to 25	Knob	No	1/4	Side	NPT Female	5 3/8"	1.37"	Air, Nitrogen, Argon, Helium	-40 to 165	8166T41	0000000


				1/4	Side	3,500	1/4	Side	0 to 100	Knob	No	1/4	Side	NPT Female	5 3/8"	1.37"	Air, Nitrogen, Argon, Helium	-40 to 165	8166T42	000000
				1/4	Side	3,500	1/4	Side	0 to 250	Knob	No	1/4	Side	NPT Female	5 3/8"	1.37"	Air, Nitrogen, Argon, Helium	-40 to 165	8166T43	000000
				1/4	Side	3,500	1/4	Side	0 to 500	Knob	No	1/4	Side	NPT Female	5 3/8"	1.37"	Air, Nitrogen, Argon, Helium	-40 to 165	8166T44	000000
				1/2	Side	500	1/2	Side	0 to 25	Knob	No	1/4	Side	NPT Female	5 1/2"	1.37"	Air, Nitrogen, Argon, Helium	-40 to 165	8166T45	00000000
				1/2	Side	500	1/2	Side	0 to 100	Knob	No	1/4	Side	NPT Female	5 1/2"	1.37"	Air, Nitrogen, Argon, Helium	-40 to 165	8166T46	00000000
				1/2	Side	500	1/2	Side	0 to 150	Knob	No	1/4	Side	NPT Female	5 1/2"	1.37"	Air, Nitrogen, Argon, Helium	-40 to 165	8166T47	00000000

Corrosion-Resistant Panel-Mount Ultra-High-Pressure-Regulating Valves for Water, Air, and Inert Gas

To regulate inlet pressures up to 6,000 psi in wet conditions and harsh environments, these valves have a 316 stainless steel body for exceptional corrosion resistance. They automatically reduce a high, variable inlet pressure to a lower, stable outlet pressure. Adjust the outlet pressure within the range. Valves have threads below the adjustment knob and come with a panel-mount nut. All have two gauge ports. They are no-bleed style, so they keep the process gases contained in the valve.

	Inlet			Outlet				Gauge Port
	Pipe Size	Location	Max. Pressure, psi	Pipe Size	Location	Pressure Adjustment Method	Pressure Gauge Included	Pipe Size	Location	Connection	End-to-End Lg.	Panel Cutout Dia.	For Use With	Temp. Range, ° F	Choose an Outlet Pressure, psi		Each
NPT Female







				316 Stainless Steel Body—PTFE Seal

				1/4	Side	6,000	1/4	Side	Knob	No	1/4	Side	NPT Female	2"	1.37"	Water, Air, Inert Gas	32 to 165	0 to 1,500, 0 to 2,500	4289T21	0000000

Corrosion-Resistant Pressure-Regulating Valves for Water, Oil, Air, and Inert Gas

Image of Product. Front orientation. Pressure-Regulating Valves. Corrosion-Resistant Pressure-Regulating Valves for Water, Oil, Air, and Inert Gas.

Often used in wet conditions and harsh environments, these valves have a 316 stainless steel body for excellent corrosion resistance. They automatically reduce a high, variable inlet pressure to a lower, stable outlet pressure. Adjust the outlet pressure within the range.

	Inlet			Outlet
	Pipe Size	Location	Max. Pressure, psi	Pipe Size	Location	Pressure Adjustment Method	End-to-End Lg.	For Use With	Temp. Range, ° F	Choose an Outlet Pressure, psi		Each
NPT Female







				316 Stainless Steel Body—Buna-N Diaphragm and Seal

				1/2	Side	720	1/2	Side	Screw	4 1/2"	Water, Oil, Air, Inert Gas	32 to 200	2 to 30, 10 to 50, 30 to 125, 50 to 150	8099K11	000000000


				3/4	Side	720	3/4	Side	Screw	5 1/8"	Water, Oil, Air, Inert Gas	32 to 200	2 to 20, 10 to 35, 30 to 75, 50 to 110, 105 to 150	8099K21	00000000
				1	Side	720	1	Side	Screw	5 7/8"	Water, Oil, Air, Inert Gas	32 to 200	2 to 20, 10 to 45, 20 to 60, 55 to 100, 90 to 150	8099K31	00000000

Heavy Duty Pressure-Regulating Valves for Water and Air

Thicker walls and a 304 stainless steel seal make these valves tougher than brass pressure-regulating valves. They automatically reduce a high, variable inlet pressure to a lower, stable outlet pressure. Adjust the outlet pressure within the range. Valves have an internal strainer to trap debris. Body is bronze for durability and a long service life.

	Inlet			Outlet
	Pipe Size	Location	Max. Pressure, psi	Pipe Size	Location	Pressure Adjustment Method	End-to-End Lg.	For Use With	Temp. Range, ° F	Choose an Outlet Pressure, psi		Each
NPT Female







				Bronze Body—EPM Rubber Diaphragm and 304 Stainless Steel Seal with Internal Strainer

				1/2	Side	300	1/2	Side	Screw	5"	Water, Air	32 to 180	20 to 70, 71 to 150	4676K31	0000000


				3/4	Side	300	3/4	Side	Screw	5 1/2"	Water, Air	32 to 180	20 to 70, 71 to 150	4676K32	000000
				1	Side	300	1	Side	Screw	6 7/16"	Water, Air	32 to 180	20 to 70, 71 to 150	4676K53	000000
				1 1/2	Side	300	1 1/2	Side	Screw	8 7/8"	Water, Air	32 to 180	20 to 70, 71 to 150	4676K55	00000000
				2	Side	300	2	Side	Screw	10 7/16"	Water, Air	32 to 180	20 to 70, 71 to 150	4676K56	00000000

Cleaned and Bagged Pressure-Regulating Valves for Air and Inert Gas

Often used for oxygen service and other high-purity applications, these valves are cleaned and bagged to meet CGA G-4.1 standards to prevent contamination. They automatically reduce a high, variable inlet pressure to a lower, stable outlet pressure. Adjust the outlet pressure within the range. Valves have two gauge ports. They are no-bleed style, so they keep process gases contained in the valve.

	Inlet			Outlet				Gauge Port
	Pipe Size	Location	Max. Pressure, psi	Pipe Size	Location	Pressure Adjustment Method	Pressure Gauge Included	Pipe Size	Location	Connection	End-to-End Lg.	For Use With	Temp. Range, ° F	Specs. Met	Choose an Outlet Pressure, psi		Each
NPT Female







				Brass Body—Buna-N Diaphragm and Fluoroelastomer Seal

				1/2	Side	500	1/2	Side	T-Handle	No	1/4	Side	NPT Female	2 13/16"	Nitrogen, Oxygen, Argon, Helium, Neon	-40 to 165	CGA G-4.1	5 to 55, 40 to 110, 100 to 200, 175 to 300	49305K21	0000000


				3/4	Side	500	3/4	Side	T-Handle	No	1/4	Side	NPT Female	3 5/16"	Nitrogen, Oxygen, Argon, Helium, Neon	-40 to 165	CGA G-4.1	5 to 55, 40 to 110, 100 to 200, 175 to 275	49305K22	000000
				1	Side	500	1	Side	T-Handle	No	1/4	Side	NPT Female	3 5/16"	Nitrogen, Oxygen, Argon, Helium, Neon	-40 to 165	CGA G-4.1	5 to 55, 40 to 110, 100 to 200, 175 to 275	49305K23	000000

Tank-Mount High-Pressure-Regulating Valves for Air and Inert Gas

Often used for pressure-vessel testing and other high-pressure applications, these valves can handle at least seven times the outlet pressure of standard tank-mount pressure-regulating valves. They automatically reduce a high inlet pressure from compressed gas tanks to a lower, stable outlet pressure. All have Compressed Gas Association (CGA) numbered inlet fittings for secure connections to compressed gas tanks. Choose a valve with the same CGA number as your tank and other system components. Outlet fittings are Swagelok® for a leak-free seal around hard metal tubing in high-pressure lines. Also known as instrumentation fittings, Swagelok® fittings are compatible with Parker A-Lok, Gyrolok, Bilok, and Tylok fittings. Valves have a gauge to monitor outlet pressure and a gauge to monitor inlet pressure from the tank. They are single stage and reduce pressure in one step, which causes the outlet pressure to fluctuate slightly as you empty the tank.

For Argon, Helium, and Nitrogen


Female Outlet × Female Inlet Elbow With T-Handle	Female Outlet × Male Inlet Elbow With T-Handle

	Inlet					Outlet					Material
	CGA No.	Location	Thread Direction	Pressure Gauge Reading Range, psi	No. of Stages	For Tube OD	Location	Pressure Range, psi	Pressure Adjustment Method	Shape	Body	Seal	Temp. Range, ° F		Each
NGO Female Inlet × Swagelok® Female Outlet



		677	Side	Left Hand	0 to 7,500	Single	1/4"	Bottom	300 to 4,500	T-Handle	90° Elbow	Brass	PCTFE	-20 to 120	6677A14	000000000


		NGO Male Inlet × Swagelok® Female Outlet



				580	Side	Right Hand	0 to 4,000	Single	1/4"	Bottom	200 to 3,000	T-Handle	90° Elbow	Brass	PCTFE	-20 to 120	6677A13	000000

For Oxygen

Female Outlet × Female

Inlet Straight With Knob

	Inlet					Outlet					Material
	CGA No.	Location	Thread Direction	Pressure Gauge Reading Range, psi	No. of Stages	For Tube OD	Location	Pressure Range, psi	Pressure Adjustment Method	Shape	Body	Seal	Diaphragm	Temp. Range, ° F		Each
NGO Female Inlet × Swagelok® Female Outlet



		540	Side	Right Hand	0 to 4,000	Single	1/4"	Side	0 to 1,500	Knob	Straight	Brass	PCTFE	Neoprene	-20 to 120	6677A17	0000000


		540	Side	Right Hand	0 to 4,000	Single	1/4"	Side	0 to 2,500	Knob	Straight	Brass	PCTFE	Neoprene	-20 to 120	6677A18	000000

For Air

Female Outlet × Male

Inlet Straight With Knob

	Inlet					Outlet					Material
	CGA No.	Location	Thread Direction	Pressure Gauge Reading Range, psi	No. of Stages	For Tube OD	Location	Pressure Range, psi	Pressure Adjustment Method	Shape	Body	Seal	Diaphragm	Temp. Range, ° F		Each
NGO Male Inlet × Swagelok® Female Outlet



		590	Side	Left Hand	0 to 4,000	Single	1/4"	Side	0 to 1,500	Knob	Straight	Brass	PCTFE	Polyurethane Rubber	-20 to 120	6677A15	0000000


		590	Side	Left Hand	0 to 4,000	Single	1/4"	Side	0 to 2,500	Knob	Straight	Brass	PCTFE	Polyurethane Rubber	-20 to 120	6677A16	000000

For Breathable Air

Female Outlet × Female

Inlet Straight With Knob

	Inlet					Outlet					Material
	CGA No.	Location	Thread Direction	Pressure Gauge Reading Range, psi	No. of Stages	For Tube OD	Location	Pressure Range, psi	Pressure Adjustment Method	Shape	Body	Seal	Diaphragm	Temp. Range, ° F		Each
NGO Female Inlet × Swagelok® Female Outlet



		346	Side	Right Hand	0 to 4,000	Single	1/4"	Side	0 to 1,500	Knob	Straight	Brass	PCTFE	Polyurethane Rubber	-20 to 120	6677A19	0000000


		346	Side	Right Hand	0 to 4,000	Single	1/4"	Side	0 to 2,500	Knob	Straight	Brass	PCTFE	Polyurethane Rubber	-20 to 120	6677A21	000000

Pressure-Regulating Valves for Drinking Water


Valves	Valves With Union Fitting

These valves meet NSF/ANSI 61 for use in drinking water systems. They automatically reduce a high, variable inlet pressure to a lower, stable outlet pressure. Adjust the outlet pressure within the range. All valves have a gauge port. An internal strainer traps debris. Body is bronze for durability and a long service life.

Union Fitting—Valves with union fitting disassemble for easy installation and removal.

	Inlet			Outlet					Gauge Port
	Pipe Size	Location	Max. Pressure, psi	Pipe Size	Location	Pressure Range, psi	Pressure Adjustment Method	Pressure Gauge Included	Pipe Size	Location	Connection	End-to-End Lg.	For Use With	Temp. Range, ° F	Certification	Food Industry Std.		Each
NPT Female







				Bronze Body—Buna-N Diaphragm and Seal with Internal Strainer

				1/2	Side	400	1/2	Side	15 to 75	Screw	No	1/4	Bottom	NPT Female	3 1/2"	Drinking Water	33 to 140	ASSE 1003 Listed, CSA Certified, IAPMO Listed	NSF/ANSI 61	4946K11	0000000


				3/4	Side	400	3/4	Side	15 to 75	Screw	No	1/4	Bottom	NPT Female	3 1/2"	Drinking Water	33 to 140	ASSE 1003 Listed, CSA Certified, IAPMO Listed	NSF/ANSI 61	4946K12	000000
				1	Side	400	1	Side	15 to 75	Screw	No	1/4	Bottom	NPT Female	4"	Drinking Water	33 to 140	ASSE 1003 Listed, CSA Certified, IAPMO Listed	NSF/ANSI 61	4946K13	000000




						Bronze Body—Buna-N Diaphragm and Seal with Internal Strainer and Union Fitting

						1/2	Side	400	1/2	Side	15 to 75	Screw	No	1/4	Bottom	NPT Female	4 3/8"	Drinking Water	33 to 140	ASSE 1003 Listed, CSA Certified, IAPMO Listed	NSF/ANSI 61	4946K21	000000


						3/4	Side	400	3/4	Side	15 to 75	Screw	No	1/4	Bottom	NPT Female	4 7/16"	Drinking Water	33 to 140	ASSE 1003 Listed, CSA Certified, IAPMO Listed	NSF/ANSI 61	4946K22	000000
						1	Side	400	1	Side	15 to 75	Screw	No	1/4	Bottom	NPT Female	4 15/16"	Drinking Water	33 to 140	ASSE 1003 Listed, CSA Certified, IAPMO Listed	NSF/ANSI 61	4946K23	000000
						1 1/4	Side	400	1 1/4	Side	15 to 75	Screw	No	1/4	Bottom	NPT Female	6 3/16"	Drinking Water	33 to 140	ASSE 1003 Listed, CSA Certified, IAPMO Listed	NSF/ANSI 61	4946K24	000000
						1 1/2	Side	300	1 1/2	Side	25 to 75	Screw	No	1/4	Bottom	NPT Female	6 5/16"	Drinking Water	33 to 140	ASSE 1003 Listed, CSA Certified, IAPMO Listed	NSF/ANSI 61	4946K25	000000
						2	Side	300	2	Side	25 to 75	Screw	No	1/4	Bottom	NPT Female	6 1/4"	Drinking Water	33 to 140	ASSE 1003 Listed, CSA Certified, IAPMO Listed	NSF/ANSI 61	4946K26	000000

Long-Life Back-Pressure-Regulating Valves for Water and Oil

Image of Product. Front orientation. Contains Annotated. Pressure-Regulating Valves. Long-Life Back-Pressure-Regulating Valves for Water and Oil.

For a longer service than cast iron valves, these have a durable bronze body and a 303 stainless steel seal. Commonly installed as bypass lines after centrifugal, reciprocating, and rotary pumps, they obstruct flow to maintain sufficient operating pressure in your system. If the system pressure exceeds the set pressure, they exhaust through the outlet. Adjust the set pressure within the range.

	Inlet			Outlet
	Pipe Size	Location	Max. Pressure, psi	Pipe Size	Location	Pressure Adjustment Method	Port-to-Port Lg.	For Use With	Temp. Range, ° F	Choose an Outlet Pressure, psi		Each
NPT Female







				Bronze Body—303 Stainless Steel Seal

				1/4	Bottom	600	1/4	Side	Screw	1 1/4"	Water, Oil	-40 to 450	15 to 30, 25 to 75, 50 to 140, 100 to 300, 200 to 600	4662K46	0000000


				3/8	Bottom	600	3/8	Side	Screw	1 1/4"	Water, Oil	-40 to 450	15 to 30, 25 to 75, 50 to 140, 100 to 300, 200 to 600	4662K48	000000
				1/2	Bottom	600	1/2	Side	Screw	1 5/8"	Water, Oil	-40 to 450	15 to 75, 50 to 150, 100 to 300, 200 to 600	4662K32	000000
				3/4	Bottom	600	3/4	Side	Screw	1 5/8"	Water, Oil	-40 to 450	15 to 75, 50 to 150, 100 to 300, 200 to 600	4662K34	000000
				1	Bottom	600	1	Side	Screw	2 1/4"	Water, Oil	-40 to 450	15 to 75, 50 to 150, 100 to 300, 200 to 600	4662K36	000000
				1 1/4	Bottom	600	1 1/4	Side	Screw	2 1/4"	Water, Oil	-40 to 450	15 to 75, 50 to 150, 100 to 300, 200 to 600	4662K38	000000

Back-Pressure-Regulating Valves for Water and Oil

Commonly used as bypass lines after centrifugal, reciprocating, and rotary pumps, these valves obstruct flow to maintain sufficient operating pressure in your system. If the system pressure exceeds the set pressure, they exhaust through the threaded relief port. Adjust the set pressure within the range. Valves have a cast iron body that absorbs vibration from pressure changes to reduce wear and noise in your pipeline.

	Inlet			Outlet			Relief Port
	Pipe Size	Location	Max. Pressure, psi	Pipe Size	Location	Pressure Adjustment Method	Pipe Size	Location	End-to-End Lg.	For Use With	Temp. Range, ° F	Choose an Outlet Pressure, psi		Each
NPT Female







				Cast Iron Body—Nickel Diaphragm and 303 Stainless Steel Seal

				1/2	Side	400	1/2	Side	Screw	1/2	Bottom	2 7/8"	Water, Oil	-40 to 200	0 to 25, 5 to 50, 30 to 100, 75 to 175, 150 to 400	4675K21	000000000


				1 1/4	Side	400	1 1/4	Side	Screw	1 1/4	Bottom	4 1/4"	Water, Oil	-40 to 200	20 to 85, 40 to 125, 50 to 230, 175 to 380, 300 to 400	4675K25	00000000
				1 1/2	Side	400	1 1/2	Side	Screw	1 1/2	Bottom	5"	Water, Oil	-40 to 200	10 to 55, 30 to 100, 40 to 200, 125 to 300, 200 to 400	4675K26	00000000
				2	Side	400	2	Side	Screw	2	Bottom	5"	Water, Oil	-40 to 200	10 to 55, 30 to 100, 40 to 200, 125 to 300, 200 to 400	4675K27	00000000

Pressure-Regulating Valves for Chemicals

A plastic body and fluoroelastomer seal stand up to harsh chemicals. These valves automatically reduce a high, variable inlet pressure to a lower, stable outlet pressure. Adjust the outlet pressure within the range.

Polypropylene Body—Polypropylene valves withstand higher temperatures than PVC valves.

	Inlet			Outlet
	Pipe Size	Location	Max. Pressure, psi	Pipe Size	Location	Pressure Range, psi	Pressure Adjustment Method	End-to-End Lg.	For Use With	Temp. Range, ° F		Each
NPT Female







				Polypropylene Body—Fluoroelastomer Seal

				1/2	Side	125	1/2	Side	10 to 80	Screw	3"	Chemicals	35 to 180	45965K41	0000000


				3/4	Side	125	3/4	Side	10 to 80	Screw	3 15/16"	Chemicals	35 to 180	45965K42	000000
				1	Side	125	1	Side	10 to 80	Screw	3 15/16"	Chemicals	35 to 180	45965K43	000000




						PVC Body—Fluoroelastomer Seal

						1/2	Side	125	1/2	Side	10 to 80	Screw	3"	Chemicals	40 to 140	45965K31	000000


						3/4	Side	125	3/4	Side	10 to 80	Screw	3 15/16"	Chemicals	40 to 140	45965K32	000000
						1	Side	125	1	Side	10 to 80	Screw	3 15/16"	Chemicals	40 to 140	45965K33	000000
						1 1/2	Side	125	1 1/2	Side	10 to 80	Screw	6 1/8"	Chemicals	40 to 140	45965K34	00000000
						2	Side	125	2	Side	10 to 80	Screw	6"	Chemicals	40 to 140	45965K35	00000000

High-Temperature Pressure-Regulating Valves for Water, Oil, Air, and Inert Gas

Rated for more than double the temperature of standard pressure-regulating valves, these can withstand temperatures up to 550° F. They automatically reduce a high, variable inlet pressure to a lower, stable outlet pressure. Adjust the outlet pressure within the range. Valves meet ANSI/FCI 70-2 Class IV for tight shut-off (max. leakage rate of 0.01%).

	Inlet			Outlet
	Pipe Size	Location	Max. Pressure, psi	Pipe Size	Location	Pressure Adjustment Method	End-to-End Lg.	For Use With	Temp. Range, ° F	Specs. Met	Choose an Outlet Pressure, psi		Each
NPT Female







				Steel Body—316 Stainless Steel Diaphragm and 303 Stainless Steel Seal

				1/2	Side	300	1/2	Side	Screw	3 5/8"	Water, Oil, Air, Inert Gas	32 to 550	ANSI/FCI 70-2 Class IV	2 to 23, 10 to 38, 20 to 55, 35 to 160, 95 to 220	46395K21	000000000


				3/4	Side	300	3/4	Side	Screw	3 5/8"	Water, Oil, Air, Inert Gas	32 to 550	ANSI/FCI 70-2 Class IV	2 to 23, 10 to 38, 20 to 55, 35 to 160, 95 to 220	46395K23	00000000
				1	Side	300	1	Side	Screw	4 3/16"	Water, Oil, Air, Inert Gas	32 to 550	ANSI/FCI 70-2 Class IV	5 to 20, 10 to 30, 20 to 45, 30 to 95, 60 to 160	46395K25	00000000
				1 1/2	Side	300	1 1/2	Side	Screw	4 13/16"	Water, Oil, Air, Inert Gas	32 to 550	ANSI/FCI 70-2 Class IV	5 to 20, 10 to 30, 20 to 45, 30 to 95, 60 to 160	46395K27	00000000
				2	Side	300	2	Side	Screw	5 1/2"	Water, Oil, Air, Inert Gas	32 to 550	ANSI/FCI 70-2 Class IV	5 to 20, 10 to 30, 20 to 45, 30 to 95, 60 to 160	46395K29	00000000

Pressure-Regulating Inline Hydraulic Valves

When input pressure varies, use these valves to maintain a consistent pressure. They are often placed after a directional-control valve and before an actuator, such as a cylinder. They have an indicator/gauge port for the inlet and one for the outlet so you can monitor that output pressure remains steady.

	Inlet/Outlet Connection		Relief Connection				Overall
	Pipe Size	Dash Size	Pipe Size	Dash Size	Max. Flow Rate, gpm	Max. Pressure, psi	Lg.	Wd.	Ht.	For Use With	Choose a Set Pressure, psi		Each
NPT Female Inlet and Relief Port







				Cast Iron Body—Buna-N Seal

				3/4	12	1/4	04	33	3,000	5 7/8"	3 3/4"	7 1/8"	Hydraulic Fluid	100 to 1,000, 500 to 2,000, 1,000 to 3,000	9474T2	0000000

Corrosion-Resistant Compact Pressure-Regulating Valves for Water

Often used on dispensers, humidifiers, and fountains, these valves have a 316 stainless steel body that can stand up to deionized water and corrosive conditions. They automatically reduce a high, variable inlet pressure to a lower, stable outlet pressure. Adjust the outlet pressure within the range. Valves have a low-profile body to fit in tight spots. All have a gauge port.

	Inlet			Outlet				Gauge Port
	Pipe Size	Location	Max. Pressure, psi	Pipe Size	Location	Pressure Adjustment Method	Pressure Gauge Included	Pipe Size	Location	Connection	End-to-End Lg.	For Use With	Temp. Range, ° F	Choose an Outlet Pressure, psi		Each
NPT Female







				316 Stainless Steel Body—Buna-N Diaphragm and Seal

				1/4	Side	400	1/4	Side	Screw	No	1/4	Side	NPT Female	3 3/4"	Deionized Water, Water	33 to 120	1 to 25, 3 to 50, 10 to 125, 20 to 175, 100 to 300	8119K44	000000000


				3/8	Side	400	3/8	Side	Screw	No	1/4	Side	NPT Female	3 3/4"	Deionized Water, Water	33 to 120	1 to 25, 3 to 50, 10 to 125, 20 to 175, 100 to 300	8119K46	00000000
				1/2	Side	400	1/2	Side	Screw	No	1/4	Side	NPT Female	2 11/16"	Deionized Water, Water	33 to 120	1 to 25, 3 to 50, 10 to 125, 20 to 175, 100 to 300	8119K48	00000000

Threaded Pressure-Regulating Valves for Food and Beverage


With Outlet Pressure Adjustment Knob	With Outlet Pressure Adjustment Screw

These valves are often used to regulate pressure in food and beverage lines. They automatically reduce a high, variable inlet pressure to a lower, stable outlet pressure. Adjust the outlet pressure within the range. Valves have two gauge ports and come with plugs to close the unused ports.

Outlet-Pressure-Adjustment Knob—Valves with knob have a Buna-N/Nylon diaphragm which is FDA Compliant 21 CFR 177.2600.

	Inlet			Outlet				Gauge Port			Lg.
	Pipe Size	Location	Max. Pressure, psi	Pipe Size	Location	Pressure Adjustment Method	Pressure Gauge Included	Pipe Size	Location	Connection	End-to-End	Port-to-Port	For Use With	Temp. Range, ° F	Food Industry Std.	Choose an Outlet Pressure, psi		Each
NPT Female







				Acetal Body—Buna-N/Nylon Diaphragm and EPDM Seal

				1/4	Side	150	1/4	Side	Knob	No	1/8	Side	NPT Female	1 5/8"	1 1/2"	Food, Beverage	35 to 125	FDA Compliant 21 CFR 177.2600, NSF/ANSI 61	5 to 50, 5 to 125	4545T61	000000




						Noryl PPO Body—Buna-N Diaphragm and Seal

						1/4	Side	300	1/4	Side	Screw	No	1/4	Side	NPT Female	1 9/16"	3/4"	Food, Beverage	35 to 125	NSF/ANSI 61	0 to 25, 0 to 60, 0 to 125	8113K11	000000

Miniature Panel-Mount Pressure-Regulating Valves for Water, Air, and Inert Gas

Our smallest pressure-regulating valves automatically reduce a high, variable inlet pressure to a lower, stable outlet pressure in tight spaces where other valves can't fit. Adjust the outlet pressure within the range. Valves have threads below the adjustment screw and comes with a panel-mount nut. Body is nickel-plated brass for good corrosion resistance.

	Inlet			Outlet
	Thread Size	Location	Max. Pressure, psi	Thread Size	Location	Pressure Range, psi	Pressure Adjustment Method	Port-to-Port Lg.	Panel Cutout Dia.	For Use With	Temp. Range, ° F		Each
UNF Female







				Nickel-Plated Brass Body—Buna-N Seal

				10-32	Bottom	80	10-32	Side	5 to 80	Screw	3/8"	1/2"	Water, Air, Inert Gas	32 to 180	3834T51	000000

Compact Pressure-Regulating Valves for Water


Valves	Valve With Pressure Gauge

A low-profile body fits in systems where space is at a premium. Often used to regulate the water supply to small tanks, these valves automatically reduce a high, variable inlet pressure to a lower, stable outlet pressure. Adjust the outlet pressure within the range. All valves have a gauge port.

Outlet Pressure Gauge Included—Pressure gauges let you monitor outlet pressure.

	Inlet			Outlet		Gauge Port						Outlet Pressure Gauge Not Included		Outlet Pressure Gauge Included
	Pipe Size	Location	Max. Pressure, psi	Pipe Size	Location	Pipe Size	Location	End-to-End Lg.	For Use With	Temp. Range, ° F	Choose an Outlet Pressure, psi		Each		Each
NPT Female







				Brass Body—Buna-N Diaphragm and Seal

				1/8	Side	300	1/8	Side	1/8	Side	1 1/2"	Water	33 to 140	0 to 25, 0 to 60	3823T11	0000000	———	0


				1/8	Side	300	1/8	Side	1/8	Side	1 1/2"	Water	33 to 140	0 to 25, 0 to 60, 0 to 125	———	0	3823T31	0000000
				1/4	Side	300	1/4	Side	1/8	Side	1 1/2"	Water	33 to 140	0 to 25, 0 to 60, 0 to 125	3823T12	000000	3823T32	000000

Clean Room Panel-Mount Pressure-Regulating Valves for Air and Inert Gas

Maintain contaminant-free standards in clean room environments. These valves come cleaned and bagged to Fed. Spec. Class 100 and ISO Class 5 clean room standards and have a 316 stainless steel body with a smooth finish to resist dust collection. They automatically reduce a high, variable inlet pressure to a lower, stable output pressure. Valves have threads below the adjustment knob and come with a panel-mount nut. Adjust the outlet pressure within the range.

NPT Female

Image of Product. Front orientation. Pressure-Regulating Valves. Clean Room Panel-Mount Pressure-Regulating Valves for Air and Inert Gas.

Relieving—Relieving valves exhaust when the downstream pressure exceeds the set pressure.

Nonrelieving—Nonrelieving valves do not exhaust excess downstream pressure.

1 Gauge Port—Gauge ports let you attach a pressure gauge.

	Valves																Brackets
	Inlet			Outlet			Gauge Port
	Pipe Size	Location	Max. Pressure, psi	Pipe Size	Location	Pressure Range, psi	No. of Ports	Pipe Size	Location	End-to-End Lg.	Panel Cutout Dia.	Clean Room Std.	For Use With	Temp. Range, ° F		Each		Each
316 Stainless Steel Body—Fluoroelastomer Diaphragm and Seal







				Relieving

				1/8	Side	145	1/8	Side	7 to 102	1	1/4	Side	1.700"	1.2"	Fed. Std. Class 100, ISO Class 5	Air, Nitrogen	32 to 140	4238K53	0000000	4238K51	00000


				1/4	Side	145	1/4	Side	7 to 102	1	1/4	Side	1.700"	1.2"	Fed. Std. Class 100, ISO Class 5	Air, Nitrogen	32 to 140	4238K54	000000	4238K51	0000
				1/4	Side	145	1/4	Side	7 to 102	1	1/4	Side	2.280"	1.44"	Fed. Std. Class 100, ISO Class 5	Air, Nitrogen	32 to 140	4238K55	000000	4238K52	00000
				3/8	Side	145	3/8	Side	7 to 102	1	1/4	Side	2.280"	1.44"	Fed. Std. Class 100, ISO Class 5	Air, Nitrogen	32 to 140	4238K56	000000	4238K52	00000
				1/2	Side	145	1/2	Side	7 to 102	1	1/4	Side	2.280"	1.44"	Fed. Std. Class 100, ISO Class 5	Air, Nitrogen	32 to 140	4238K57	000000	4238K52	00000




						Nonrelieving

						1/8	Side	145	1/8	Side	7 to 102	1	1/4	Side	1.700"	1.2"	Fed. Std. Class 100, ISO Class 5	Air, Nitrogen, Carbon Dioxide, Argon	32 to 140	4238K41	000000	4238K51	0000


						1/4	Side	145	1/4	Side	7 to 102	1	1/4	Side	1.700"	1.2"	Fed. Std. Class 100, ISO Class 5	Air, Nitrogen, Carbon Dioxide, Argon	32 to 140	4238K42	000000	4238K51	0000
						1/4	Side	145	1/4	Side	7 to 102	1	1/4	Side	2.280"	1.44"	Fed. Std. Class 100, ISO Class 5	Air, Nitrogen, Carbon Dioxide, Argon	32 to 140	4238K43	000000	4238K52	00000
						3/8	Side	145	3/8	Side	7 to 102	1	1/4	Side	2.280"	1.44"	Fed. Std. Class 100, ISO Class 5	Air, Nitrogen, Carbon Dioxide, Argon	32 to 140	4238K44	000000	4238K52	00000
						1/2	Side	145	1/2	Side	7 to 102	1	1/4	Side	2.280"	1.44"	Fed. Std. Class 100, ISO Class 5	Air, Nitrogen, Carbon Dioxide, Argon	32 to 140	4238K45	000000	4238K52	00000

Pressure Gauges

Clean Room Pressure-Regulating Valves for Water, Air, and Inert Gas

To maintain contaminant-free standards in clean room environments, these valves come cleaned and bagged to Fed. Std. Class 100 and ISO Class 5 clean room standards and have a 316 stainless steel body with a smooth finish to resist dust collection. They automatically reduce a high, variable inlet pressure to a lower, stable output pressure. Adjust the outlet pressure within the range. Valves are no-bleed style, so they keep process media contained within the valve.

	Inlet			Outlet
	Thread Size	Location	Max. Pressure, psi	Thread Size	Location	Pressure Range, psi	Pressure Adjustment Method	Pressure Gauge Included	End-to-End Lg.	Panel Cutout Dia.	Clean Room Std.	For Use With	Temp. Range, ° F		Each
Metric Female







				316 Stainless Steel Body—Fluoroelastomer Diaphragm and 316 Stainless Steel Seal

				M5 × 0.8 mm	Side	150	M5 × 0.8 mm	Side	1.4 to 28	Knob	No	1 3/16"	1 1/4"	Fed. Std. Class 100, ISO Class 5	Deionized Water, Air, Nitrogen, Oxygen	41 to 140	4390T111	0000000


				M5 × 0.8 mm	Side	150	M5 × 0.8 mm	Side	7 to 99	Knob	No	1 3/16"	1 1/4"	Fed. Std. Class 100, ISO Class 5	Deionized Water, Air, Nitrogen, Oxygen	41 to 140	4390T112	000000

Pressure-Regulating Valves with Garden Hose Fittings for Water


Valves	Valves with Pressure Gauge

Use these valves to automatically reduce a high, variable inlet pressure to a lower, stable outlet pressure in light duty water systems with garden hose thread (GHT) connections. Adjust the outlet pressure within the range. Some valves come with a pressure gauge for monitoring outlet pressure.

	Inlet			Outlet					Gauge Port
	Hose Size	Location	Max. Pressure, psi	Hose Size	Location	Pressure Range, psi	Pressure Adjustment Method	Pressure Gauge Included	Pipe Size	Location	Connection	End-to-End Lg.	For Use With	Temp. Range, ° F		Each
GHT Female







				Brass Body—Buna-N Diaphragm and Buna-N-Coated Nylon Seal

				3/4	Side	150	3/4	Side	10 to 60	Screw	Yes	—	Side	—	3"	Water	33 to 140	4000T31	0000000




						Brass Body—Buna-N Diaphragm and Seal

						3/4	Side	150	3/4	Side	10 to 60	Screw	No	1/8	Side	NPT Female	3"	Water	33 to 140	3823T21	000000

Long-Life Pressure-Regulating Valves for Steam

For a longer service life than cast iron valves, these have a durable bronze body. All automatically reduce a high, variable inlet pressure to a lower, stable outlet pressure. Adjust the outlet pressure within the range. Valves have an internal strainer to trap debris.

	Inlet			Outlet
	Pipe Size	Location	Max. Pressure, psi	Pipe Size	Location	Pressure Adjustment Method	End-to-End Lg.	For Use With	Temp. Range, ° F	Choose an Outlet Pressure, psi		Each
NPT Female







				Bronze Body—Bronze Diaphragm and PTFE Seal with Internal Strainer

				1/4	Side	250	1/4	Side	Screw	3"	Steam	-20 to 400	2 to 25, 20 to 60	47345K31	0000000


				3/8	Side	250	3/8	Side	Screw	3 7/8"	Steam	-20 to 400	2 to 30, 20 to 70, 40 to 110, 90 to 150	47345K32	000000
				1/2	Side	250	1/2	Side	Screw	4 1/2"	Steam	-20 to 400	2 to 30, 10 to 50, 30 to 125, 50 to 150	47345K33	000000
				3/4	Side	250	3/4	Side	Screw	5 1/8"	Steam	-20 to 400	2 to 20, 10 to 35, 30 to 75, 50 to 110, 105 to 150	47345K34	000000
				1	Side	250	1	Side	Screw	5 7/8"	Steam	-20 to 400	2 to 20, 10 to 45, 20 to 60, 55 to 100, 90 to 150	47345K35	000000
				1 1/4	Side	250	1 1/4	Side	Screw	6 3/4"	Steam	-20 to 400	2 to 15, 10 to 30, 20 to 50, 45 to 100, 90 to 150	47345K36	00000000
				1 1/2	Side	250	1 1/2	Side	Screw	6 3/4"	Steam	-20 to 400	2 to 15, 10 to 30, 20 to 50, 45 to 100, 90 to 150	47345K37	00000000
				2	Side	250	2	Side	Screw	9 1/4"	Steam	-20 to 400	2 to 20, 10 to 60, 20 to 100, 90 to 150	47345K38	00000000

High-Accuracy Pressure-Regulating Valves for Steam

Control steam line pressure with ±1 psi accuracy. These valves automatically reduce a high, variable inlet pressure to a lower, stable outlet pressure. Adjust the outlet pressure within the range. Valves have a cast iron body that absorbs vibration from pressure changes to reduce wear and noise in your pipeline. They meet ANSI/FCI 70-2 Class IV for tight shut-off (max. leakage rate of 0.01%). Install _1/4 NPT male pipe (not included) between the control valve and your downstream steam line.

Repair Kits—Repair kits (sold separately) include replacement seals, diaphragm, spring, and spring assembly.

	Valves												Repair Kits
	Inlet			Outlet
	Pipe Size	Location	Max. Pressure, psi	Pipe Size	Location	Pressure Adjustment Method	For Use With	Temp. Range, ° F	Specs. Met	Choose an Outlet Pressure, psi		Each		Each
NPT Female







				Cast Iron Body—301 Stainless Steel Diaphragm and 420 Stainless Steel Seal

				1/2	Side	250	1/2	Side	Screw	Steam	40 to 450	ANSI/FCI 70-2 Class IV	3 to 20, 5 to 50, 10 to 100, 20 to 150	9792K19	000000000	9792K32	0000000


				3/4	Side	250	3/4	Side	Screw	Steam	40 to 450	ANSI/FCI 70-2 Class IV	3 to 20, 5 to 50, 10 to 100, 20 to 150	9792K21	00000000	9792K33	000000
				1	Side	250	1	Side	Screw	Steam	40 to 450	ANSI/FCI 70-2 Class IV	3 to 20, 5 to 50, 10 to 100, 20 to 150	9792K23	00000000	9792K34	000000
				1 1/4	Side	250	1 1/4	Side	Screw	Steam	40 to 450	ANSI/FCI 70-2 Class IV	3 to 20, 5 to 50, 10 to 100, 20 to 150	9792K25	00000000	9792K35	000000
				1 1/2	Side	250	1 1/2	Side	Screw	Steam	40 to 450	ANSI/FCI 70-2 Class IV	3 to 20, 5 to 50, 10 to 100, 20 to 150	9792K27	00000000	9792K36	000000
				2	Side	250	2	Side	Screw	Steam	40 to 450	ANSI/FCI 70-2 Class IV	3 to 20, 5 to 50, 10 to 100, 20 to 150	9792K29	00000000	9792K37	00000000

High-Purity Tank-Mount Pressure-Regulating Valves for Fuel Gases

Single Stage

Two Stage

Designed to reduce contaminants in high-purity applications using hydrogen and methane gas, these valves have a stainless steel and brass body with a smooth finish to reduce dust collection and internal components designed to protect the seal and diaphragm from contamination. They’re often used in research sample systems, emission monitoring systems, and chromatography. Valves automatically reduce a high inlet pressure from compressed gas tanks to a lower, stable outlet pressure. All have Compressed Gas Association (CGA) numbered inlet fittings for secure connections to compressed gas tanks. Choose a valve with the same CGA number as your tank and other system components. Outlet fittings are Swagelok® for a leak-free seal around hard metal tubing in high-pressure lines. Also known as instrumentation fittings, Swagelok® fittings are compatible with Parker A-Lok, Gyrolok, Bilok, and Tylok fittings. Valves come with a gauge to monitor outlet pressure and a gauge to monitor inlet pressure from the tank.

Single Stage—Single-stage valves reduce pressure in one step, which causes the outlet pressure to fluctuate slightly as you empty the tank. They’re best for applications where a constant outlet pressure isn’t critical.

Two Stage—Two-stage valves progressively reduce pressure over two steps for more consistent outlet pressure at all times. They’re often used in applications that require a constant outlet pressure regardless of the tank level.

	Inlet					Outlet
	CGA No.	Location	Thread Direction	Pressure Gauge Reading Range, psi	No. of Stages	For Tube OD	Location	Pressure Range, psi	Pressure Adjustment Method	For Use With	Temp. Range, ° F		Each
NGO Female Inlet × Swagelok® Female Outlet







				Brass Body/Stainless Steel Body—316 Stainless Steel Diaphragm and PTFE Seal with Relief Valve

				350	Side	Left Hand	0 to 4,000	Single	1/4"	Side	0 to 15	Knob	Hydrogen, Methane	-20 to 120	7951A17	0000000


				350	Side	Left Hand	0 to 4,000	Single	1/4"	Side	0 to 125	Knob	Hydrogen, Methane	-20 to 120	7951A19	000000
				350	Side	Left Hand	0 to 4,000	Two	1/4"	Side	0 to 15	Knob	Hydrogen, Methane	-20 to 120	7951A27	000000
				350	Side	Left Hand	0 to 4,000	Two	1/4"	Side	0 to 125	Knob	Hydrogen, Methane	-20 to 120	7951A29	000000
				350	Side	Left Hand	0 to 4,000	Two	1/4"	Side	0 to 500	Knob	Hydrogen, Methane	-20 to 120	7951A71	000000

Corrosion-Resistant Pressure-Regulating Valves for Steam

Regulate steam pressure in wet environments and harsh conditions with these valves that have a 316 stainless steel body for exceptional corrosion resistance. They automatically reduce a high, variable inlet pressure to a lower, stable outlet pressure. Adjust the outlet pressure within the range.

	Inlet			Outlet
	Pipe Size	Location	Max. Pressure, psi	Pipe Size	Location	Pressure Adjustment Method	End-to-End Lg.	For Use With	Temp. Range, ° F	Choose an Outlet Pressure, psi		Each
NPT Female







				316 Stainless Steel Body—316 Stainless Steel Diaphragm and PTFE Seal

				1/2	Side	400	1/2	Side	Screw	4 1/2"	Steam	-40 to 450	2 to 30, 10 to 50, 30 to 125, 50 to 150	8099K41	000000000


				3/4	Side	400	3/4	Side	Screw	5 1/8"	Steam	-40 to 450	2 to 20, 10 to 35, 30 to 75, 50 to 110, 105 to 150	8099K51	00000000
				1	Side	400	1	Side	Screw	5 7/8"	Steam	-40 to 450	2 to 20, 10 to 45, 20 to 60, 55 to 100, 90 to 150	8099K61	00000000

Tamper-Resistant Compact Pressure-Regulating Valves for Air and Inert Gas

Prevent changes to your pressure setting—these valves come set at a nonadjustable outlet pressure. They automatically reduce a high, variable inlet pressure to a lower, stable outlet pressure. All have two gauge ports.

	Inlet			Outlet		Gauge Port
	Pipe Size	Location	Max. Pressure, psi	Pipe Size	Location	Pipe Size	Location	End-to-End Lg.	For Use With	Max. Temp., ° F	Choose an Outlet Pressure, psi		Each
NPT Female







				Brass Body—Buna-N Diaphragm and Acetal Seal

				1/8	Side	400	1/8	Side	1/8	Side	1.480"	Air, Inert Gas	175	5, 10, 15, 20, 70, 80, 95, 100	9386K1	000000


				1/4	Side	400	1/4	Side	1/8	Side	1.480"	Air, Inert Gas	175	5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 100	9386K2	00000

High-Purity Tank-Mount Pressure-Regulating Valves for Inert Gas

Reduce contaminants in research sample systems, emission monitoring systems, chromatography, and other high-purity applications that use argon, helium, nitrogen, or carbon dioxide. These valves have a 316 stainless steel and brass body with a smooth finish to reduce dust collection and internal components designed to protect the seal and diaphragm from contamination. They automatically reduce a high inlet pressure from compressed gas tanks to a lower, stable outlet pressure. All have Compressed Gas Association (CGA) numbered inlet fittings for secure connections to compressed gas tanks. Choose a valve with the same CGA number as your tank and other system components. Outlet fittings are Swagelok® for a leak-free seal around hard metal tubing in high-pressure lines. Also known as instrumentation fittings, Swagelok® fittings are compatible with Parker A-Lok, Gyrolok, Bilok, and Tylok fittings. Valves have a gauge to monitor outlet pressure and a gauge to monitor inlet pressure from the tank.

For Argon, Helium, and Nitrogen


Swagelok® Female Outlet × NGO Male Inlet (Brass)	Swagelok® Female Outlet × NGO Male Inlet (Chrome-Plated Brass)

Chrome-Plated Brass Body—Chrome-plated valves add a layer of corrosion resistance.

	Inlet					Outlet
	CGA No.	Location	Thread Direction	Pressure Gauge Reading Range, psi	No. of Stages	For Tube OD	Location	Pressure Range, psi	Pressure Adjustment Method	Temp. Range, ° F		Each
NGO Male Inlet × Swagelok® Female Outlet







				Brass Body—316 Stainless Steel Diaphragm and PTFE Seal

				580	Side	Right Hand	0 to 4,000	Single	1/4"	Side	0 to 15	Knob	-20 to 120	7951A14	0000000


				580	Side	Right Hand	0 to 4,000	Single	1/4"	Side	0 to 125	Knob	-20 to 120	7951A16	000000
				580	Side	Right Hand	0 to 4,000	Single	1/4"	Side	0 to 500	Knob	-20 to 120	7951A74	000000
				580	Side	Right Hand	0 to 4,000	Two	1/4"	Side	0 to 15	Knob	-20 to 120	7951A24	000000
				580	Side	Right Hand	0 to 4,000	Two	1/4"	Side	0 to 50	Knob	-20 to 120	7951A61	000000
				580	Side	Right Hand	0 to 4,000	Two	1/4"	Side	0 to 125	Knob	-20 to 120	7951A26	000000
				580	Side	Right Hand	0 to 4,000	Two	1/4"	Side	0 to 250	Knob	-20 to 120	7951A75	000000
				High-Purity Tank-Mount Pressure-Regulating Valve, Brass Body, CGA 580 Male Inlet, 2 Stage, 0-250 PSI Product Detail QuantityEachIn stock




						Chrome-Plated Brass Body—316 Stainless Steel Diaphragm and PTFE Seal

						580	Side	Right Hand	0 to 4,000	Two	1/4"	Side	0 to 50	Knob	-20 to 120	7951A62	000000

For Carbon Dioxide


Swagelok® Female Outlet × NGO Female Inlet (Brass)	Swagelok® Female Outlet × NGO Female Inlet (Chrome-Plated Brass)

Chrome-Plated Brass Body—Chrome-plated valves add a layer of corrosion resistance.

	Inlet					Outlet
	CGA No.	Location	Thread Direction	Pressure Gauge Reading Range, psi	No. of Stages	For Tube OD	Location	Pressure Range, psi	Pressure Adjustment Method	Temp. Range, ° F		Each
NGO Female Inlet × Swagelok® Female Outlet







				Brass Body—316 Stainless Steel Diaphragm and PTFE Seal

				320	Side	Right Hand	0 to 4,000	Single	1/4"	Side	0 to 15	Knob	-20 to 120	7951A72	0000000


				320	Side	Right Hand	0 to 4,000	Single	1/4"	Side	0 to 125	Knob	-20 to 120	7951A73	000000
				320	Side	Right Hand	0 to 4,000	Two	1/4"	Side	0 to 125	Knob	-20 to 120	7951A69	000000




						Chrome-Plated Brass Body—316 Stainless Steel Diaphragm and PTFE Seal

						320	Side	Right Hand	0 to 4,000	Single	1/4"	Side	0 to 15	Knob	-20 to 120	7951A63	000000


						320	Side	Right Hand	0 to 4,000	Single	1/4"	Side	0 to 50	Knob	-20 to 120	7951A34	000000
						320	Side	Right Hand	0 to 4,000	Two	1/4"	Side	0 to 15	Knob	-20 to 120	7951A66	000000
						320	Side	Right Hand	0 to 4,000	Two	1/4"	Side	0 to 50	Knob	-20 to 120	7951A67	000000
						320	Side	Right Hand	0 to 4,000	Two	1/4"	Side	0 to 125	Knob	-20 to 120	7951A68	000000

Pressure-Regulating Valves for Fuel Gases


With T-Handle	With Knob

Install these valves directly in gas distribution pipelines for acetylene, hydrogen, or propane. They automatically reduce a high inlet pressure to a lower, stable outlet pressure. Valves have two outlets to fit various pipe configurations and come with a plug to close the unused outlet. The gauge monitors outlet pressure. All valves are single stage and reduce pressure in one step, which causes the outlet pressure to fluctuate.

		Inlet			Outlet					Lg.
	For Use With	Pipe Size	Location	Max. Pressure, psi	Pipe Size	Location	Pressure Adjustment Method	Pressure Gauge Measurement Range, psi	Temp. Range, ° F	End-to-End	Port-to-Port		Each
NPT Female







				Brass Body—Stainless Steel Diaphragm and Neoprene Seal

				Acetylene	1/4	Side	350	1/4	Bottom, Side	Knob	0 to 30	-20 to 120	3.600"	1.32"	7864A14	0000000


				Hydrogen, Propane	1/4	Side	500	1/4	Bottom, Side	T-Handle	0 to 60	0 to 120	2.400"	1.01"	7864A11	000000
				Hydrogen, Propane	1/4	Side	500	1/4	Bottom, Side	T-Handle	0 to 200	0 to 120	2.400"	1.01"	7864A12	000000

Plastic Panel-Mount Pressure-Regulating Valves for Water

For easy panel mounting in your water system, these valves have threads below the adjustment knob and come with a panel-mount nut. They automatically reduce a high, variable inlet pressure to a lower, stable outlet pressure. Adjust the outlet pressure within the range. Body is polysulfone, which is lightweight and corrosion resistant.

	Inlet				Outlet
	Pipe Size	Thread Size	Location	Max. Pressure, psi	Pipe Size	Thread Size	Location	Pressure Adjustment Method	End-to-End Lg.	Panel Cutout Dia.	For Use With	Temp. Range, ° F	Choose an Outlet Pressure, psi		Each
NPT Female







				Polysulfone Body—Buna-N/EPDM Diaphragm and Polyurethane Rubber Seal

				1/8	—	Side	150	1/8	—	Side	Knob	1 9/16"	9/16"	Water	40 to 150	0.5 to 10, 0.5 to 60	43275K46	000000


				UNF Female







								Polysulfone Body—Buna-N/EPDM Diaphragm and Polyurethane Rubber Seal

								—	10-32	Side	150	—	10-32	Side	Knob	1 1/8"	9/16"	Water	40 to 150	0.5 to 3.5, 0.5 to 10, 0.5 to 30, 0.5 to 90	43275K66	00000

Pressure-Regulating Valves with Push-to-Connect Fittings for Food and Beverage

Image of Product. Front orientation. Pressure-Regulating Valves. Pressure-Regulating Valves with Push-to-Connect Fittings for Food and Beverage.

Insert plastic or soft metal tubing into the push-to-connect fittings on these valves for a low-pressure seal in food and beverage lines. They automatically reduce a high, variable inlet pressure to a lower, stable outlet pressure. Adjust the outlet pressure within the range. They have two gauge ports.

	Inlet			Outlet				Gauge Port			Lg.
	For Tube OD	Location	Max. Pressure, psi	For Tube OD	Location	Pressure Adjustment Method	Pressure Gauge Included	Pipe Size	Location	Connection	End-to-End	Port-to-Port	For Use With	Temp. Range, ° F	Food Industry Std.	Choose an Outlet Pressure, psi		Each
Push-to-Connect Female







				Noryl PPO Body—Buna-N Diaphragm and Seal

				1/4"	Side	300	1/4"	Side	Screw	No	1/4	Side	NPT Female	2 13/16"	1 25/32"	Food, Beverage	35 to 125	NSF/ANSI 61	0 to 25, 0 to 60, 0 to 125	8113K41	0000000

Long-Life Pressure-Regulating Valves for Cryogenic Liquids

For a longer service life than standard valves for cryogenic liquids, these have a durable bronze body. All are cleaned and bagged for oxygen service and other high-purity applications. They automatically reduce a high, variable inlet pressure to a lower, stable outlet pressure. Adjust the outlet pressure within the range. Valves are designed to withstand the extreme cold of liquid argon, liquid carbon dioxide, liquid nitrogen, and liquid oxygen. They have an internal strainer to trap debris.

	Inlet			Outlet
	Pipe Size	Location	Max. Pressure, psi	Pipe Size	Location	Pressure Adjustment Method	End-to-End Lg.	For Use With	Temp. Range, ° F	Choose an Outlet Pressure, psi		Each
NPT Female







				Bronze Body—Bronze Diaphragm and PTFE Seal with Internal Strainer

				1/4	Side	400	1/4	Side	Screw	3 1/16"	Liquid Argon, Liquid Carbon Dioxide, Liquid Nitrogen, Liquid Oxygen	-320 to 150	10 to 30, 75 to 250	49165K39	0000000


				1/2	Side	400	1/2	Side	Screw	4 1/2"	Liquid Argon, Liquid Carbon Dioxide, Liquid Nitrogen, Liquid Oxygen	-320 to 150	10 to 30, 20 to 75, 20 to 100, 50 to 250	49165K59	000000
				1	Side	400	1	Side	Screw	5 7/8"	Liquid Argon, Liquid Carbon Dioxide, Liquid Nitrogen, Liquid Oxygen	-320 to 150	10 to 35, 20 to 60, 20 to 100, 75 to 250	49165K79	000000

Tank-Mount Pressure-Regulating Valves for Fuel Gases

Attach these valves to acetylene, hydrogen, methane, propane, or propylene tanks to reduce a high inlet pressure to a lower, stable outlet pressure. They have Compressed Gas Association (CGA) numbered inlet fittings for secure connections to compressed gas tanks. Choose a valve with the same CGA number as your tank and other system components. Valves come with a gauge to monitor outlet pressure and a gauge to monitor inlet pressure from the tank.

Single Stage


Male Outlet × Female Inlet Single-Stage Valve With T-Handle	Male Outlet × Female Inlet Single-Stage Valve With Knob	Male Outlet × Male Inlet Single-Stage Valve With T-Handle	Male Outlet × Male Inlet Single-Stage Valve With Knob

Brass Body—Valves with a brass body have a longer service life than valves with a brass and steel body.

Stainless Steel Diaphragm—Valves with a stainless steel diaphragm can withstand harsh environments.

	Inlet				Outlet					Material
	CGA No.	Location	Thread Direction	Pressure Gauge Reading Range, psi	Thread Size	Location	Thread Direction	Pressure Range, psi	Pressure Adjustment Method	Body	Seal	Diaphragm	Temp. Range, ° F		Each
For Acetylene







				UNF Male Outlet × NGO Female Inlet

				300	Side	Right Hand	0 to 400	9/16"-18	Side	Left Hand	0 to 15	T-Handle	Brass	PTFE	Rubber	-20 to 120	7897A2	0000000


				300	Side	Right Hand	0 to 400	9/16"-18	Side	Left Hand	0 to 15	Knob	Brass/Steel	PTFE	Rubber	-20 to 120	7897A62	000000




						UNF Male Outlet × NGO Male Inlet

						510	Side	Left Hand	0 to 400	9/16"-18	Side	Left Hand	0 to 15	T-Handle	Brass	PTFE	Rubber	-20 to 120	7897A7	000000


						510	Side	Left Hand	0 to 400	9/16"-18	Side	Left Hand	0 to 15	T-Handle	Brass	PTFE	Stainless Steel	-20 to 120	7897A53	000000
						510	Side	Left Hand	0 to 400	9/16"-18	Side	Left Hand	0 to 15	Knob	Brass/Steel	PTFE	Rubber	-20 to 120	7897A63	000000


						For Hydrogen







										UNF Male Outlet × NGO Female Inlet

										350	Side	Left Hand	0 to 4,000	9/16"-18	Side	Left Hand	0 to 125	T-Handle	Brass	PTFE	Rubber	-20 to 120	7897A5	000000


										For Propane and Propylene







														UNF Male Outlet × NGO Male Inlet

														510	Side	Left Hand	0 to 400	9/16"-18	Side	Left Hand	0 to 50	T-Handle	Brass	PTFE	Rubber	-20 to 120	7897A13	000000


														510	Side	Left Hand	0 to 400	9/16"-18	Side	Left Hand	5 to 50	Knob	Brass/Steel	PTFE	Rubber	-20 to 120	7897A66	000000

Two Stage


Male Outlet × Female Inlet Two-Stage Valve With T-Handle	Male Outlet × Female Inlet Two-Stage Valve With Knob	Male Outlet × Male Inlet Two-Stage Valve With T-Handle

Brass Body—Valves with a brass body have a longer service life than valves with a brass and steel body.

Stainless Steel Diaphragm—Valves with a stainless steel diaphragm can withstand harsh environments.

	Inlet				Outlet					Material
	CGA No.	Location	Thread Direction	Pressure Gauge Reading Range, psi	Thread Size	Location	Thread Direction	Pressure Range, psi	Pressure Adjustment Method	Body	Seal	Diaphragm	Temp. Range, ° F		Each
For Acetylene







				UNF Male Outlet × NGO Female Inlet

				300	Side	Right Hand	0 to 400	9/16"-18	Side	Left Hand	0 to 15	T-Handle	Brass/Steel	PTFE	Rubber	-20 to 120	7897A4	0000000




						UNF Male Outlet × NGO Male Inlet

						510	Side	Left Hand	0 to 400	9/16"-18	Side	Left Hand	0 to 15	T-Handle	Brass/Steel	PTFE	Rubber	-20 to 120	7897A14	000000


						510	Side	Left Hand	0 to 400	9/16"-18	Side	Left Hand	0 to 15	T-Handle	Brass	PTFE	Stainless Steel	-20 to 120	7897A81	000000


						For Hydrogen and Methane







										UNF Male Outlet × NGO Female Inlet

										350	Side	Left Hand	0 to 4,000	9/16"-18	Side	Left Hand	0 to 80	Knob	Brass	Neoprene	Stainless Steel	-20 to 120	7897A35	000000


										For Propane and Propylene







														UNF Male Outlet × NGO Male Inlet

														510	Side	Left Hand	0 to 400	9/16"-18	Side	Left Hand	0 to 50	T-Handle	Brass/Steel	PTFE	Rubber	-20 to 120	7897A18	000000

Pressure-Regulating Valves with Compression Fittings for Food and Beverage

Compression fittings bite down on hard metal and plastic tubing for a tighter seal than push-to-connect fittings. These valves automatically reduce a high, variable inlet pressure to a lower, stable outlet pressure. Adjust the outlet pressure within the range. The Buna-N/stainless steel diaphragm and EPDM seal are FDA compliant 21 CFR 177.2600.

	Inlet			Outlet
	For Tube OD	Location	Max. Pressure, psi	For Tube OD	Location	Pressure Adjustment Method	End-to-End Lg.	For Use With	Temp. Range, ° F	Food Industry Std.	Choose an Outlet Pressure, psi		Each
Compression Female







				Acetal Body—Buna-N/Stainless Steel Diaphragm and EPDM Seal

				1/4"	Side	250	1/4"	Side	Knob	2"	Food, Beverage	35 to 125	FDA Compliant 21 CFR 177.2600	1 to 10, 2 to 50, 5 to 100	4545T51	0000000

Plastic Panel-Mount Pressure-Regulating Valves for Air

Regulate pressure in air systems from your instrument panel—these valves have threads below the adjustment knob and come with a panel-mount nut. All automatically reduce a high, variable inlet pressure to a lower, stable outlet pressure. Adjust the outlet pressure within the range. Body is polysulfone, which is lightweight and corrosion resistant.

	Inlet				Outlet
	Pipe Size	Thread Size	Location	Max. Pressure, psi	Pipe Size	Thread Size	Location	Pressure Adjustment Method	End-to-End Lg.	Panel Cutout Dia.	For Use With	Temp. Range, ° F	Choose an Outlet Pressure, psi		Each
NPT Female







				Polysulfone Body—Buna-N/EPDM Diaphragm and Polyurethane Rubber Seal

				1/8	—	Side	150	1/8	—	Side	Knob	1 9/16"	9/16"	Air	40 to 150	0.5 to 3.5, 0.5 to 10, 0.5 to 30, 0.5 to 90	43275K16	000000


				UNF Female







								Polysulfone Body—Buna-N/EPDM Diaphragm and Polyurethane Rubber Seal

								—	10-32	Side	150	—	10-32	Side	Knob	1 1/8"	9/16"	Air	40 to 150	0.5 to 3.5, 0.5 to 30, 0.5 to 60, 0.5 to 90	43275K36	00000

Sanitary Pressure-Regulating Valves

Regulate air, gas, and liquid pressure on food, beverage, and pharmaceutical lines with these valves—they’re 3-A certified to meet sanitary design standards. Attach them to your line to reduce a high, variable inlet pressure to a lower, stable outlet pressure.

Twist the T-handle on top of the valve to adjust the outlet pressure. When the valve is closed, a seal on the outlet prevents leaks and helps maintain consistent pressure. These valves meet ANSI/FCI 70-2 Class III, which means a maximum of 0.1% of fluid, gas, or air can escape while they are fully closed. The spring and valve mechanism are sealed behind the diaphragm, so contaminants can’t enter. Both the diaphragm and seals hold up to water, detergents, and chemicals. They’re also FDA compliant for direct contact with food.

Made of 316 stainless steel, these valves won’t corrode from frequent washdowns with harsh cleaners. They connect to your line with quick-clamp sanitary fittings, also known as tri-clamp connections, which are easier to remove and sanitize than threaded connections. The polished interior is extremely smooth, so there’s nowhere for bacteria to hide. They’re also self-draining, so liquids drain completely and don’t contaminate your line. Keep these valves open during clean-in-place (CIP) cycles with a locking pin.

	Inlet				Outlet				Lg.
	For Tube OD	Flange OD	Location	Max. Pressure, psi	For Tube OD	Flange OD	Location	Pressure Adjustment Method	End-to-End	Port-to-Port	For Use With	Temp. Range, ° F	Specs. Met	Food Industry Std.	Choose an Outlet Pressure, psi		Each
Quick Clamp







				316 Stainless Steel Body—EPDM Diaphragm and Seal

				3/4"	0.984"	Bottom	200	3/4"	0.984"	Side	T-Handle	8 5/8"	3 5/16"	Food, Beverage	-40 to 120	ANSI/FCI 70-2 Class III	3-A Certified 64-00, FDA Compliant 21 CFR 177.2600	15 to 50, 40 to 90	3817N25	000000000


				1"	1.984"	Bottom	200	1"	1.984"	Side	T-Handle	8 5/8"	3 5/16"	Food, Beverage	-40 to 120	ANSI/FCI 70-2 Class III	3-A Certified 64-00, FDA Compliant 21 CFR 177.2600	5 to 25, 15 to 50, 40 to 90	3817N26	00000000




						316 Stainless Steel Body—PTFE Diaphragm and EPDM Seal

						1 1/2"	1.984"	Bottom	125	1 1/2"	1.984"	Side	T-Handle	13 3/8"	4 7/32"	Food, Beverage	-40 to 120	ANSI/FCI 70-2 Class III	3-A Certified 64-00, FDA Compliant 21 CFR 177.2600	10 to 25, 15 to 50, 35 to 100	3817N27	00000000


						2"	2.516"	Bottom	100	2"	2.516"	Side	T-Handle	16 1/8"	5 3/4"	Food, Beverage	-40 to 120	ANSI/FCI 70-2 Class III	3-A Certified 64-00, FDA Compliant 21 CFR 177.2600	10 to 25, 15 to 60	3817N28	00000000

Easy-Read Tank-Mount Pressure-Regulating Valves with Flowmeter for Inert Gas

Flowmeters let you see the gas flow rate from a distance. These valves automatically reduce a high inlet pressure from compressed gas tanks to a lower, stable outlet pressure. All have Compressed Gas Association (CGA) numbered inlet fittings for secure connections to compressed gas tanks. Choose a valve with the same CGA number as your tank and other system components. They have a gauge for monitoring inlet pressure from the tank.

For Argon

Male Inlet × Female

Outlet With One

Flowmeter

1 Flowmeter—Valves with one flowmeter are for one piece of equipment on a tank. The flowmeter has a single scale.

	Inlet					Outlet					Material
	CGA No.	Location	Thread Direction	Pressure Gauge Reading Range, psi	No. of Stages	Thread Size	Location	Thread Direction	Flow Range	No. of Flowmeters	Body	Seal	Diaphragm		Each
UNF Female Outlet × NGO Male Inlet



		580	Side	Right Hand	0 to 4,000	Single	5/8"-18	Side	Right Hand	0 scfh to 70 scfh	1	Brass	PTFE	Neoprene	78595A43	0000000

Valve Union Fittings

For Argon and Argon/Carbon Dioxide Blend

Male Inlet × Female

Outlet With One

Flowmeter

1 Flowmeter—Valves with one flowmeter are for one piece of equipment on a tank. The flowmeter has a single scale.

	Inlet					Outlet					Material
	CGA No.	Location	Thread Direction	Pressure Gauge Reading Range, psi	No. of Stages	Thread Size	Location	Thread Direction	Flow Range	No. of Flowmeters	Body	Seal	Diaphragm		Each
UNF Female Outlet × NGO Male Inlet



		580	Side	Right Hand	0 to 3,000	Single	5/8"-18	Side	Right Hand	0 to 70 scfh (Argon), 0 to 70 scfh (Argon/Carbon Dioxide Blend)	1	Brass	PTFE	Neoprene	78595A5	0000000

Valve Union Fittings

For Argon, Argon/Carbon Dioxide Blend, and Helium

1 Flowmeter—Valves with one flowmeter are for one piece of equipment on a tank. The flowmeter has a single scale.

	Inlet					Outlet					Material
	CGA No.	Location	Thread Direction	Pressure Gauge Reading Range, psi	No. of Stages	Thread Size	Location	Thread Direction	Flow Range	No. of Flowmeters	Body	Seal	Diaphragm		Each
UNF Female Outlet × NGO Male Inlet



		580	Side	Right Hand	0 to 3,000	Two	5/8"-18	Side	Right Hand	0 to 40 scfh (Argon), 0 to 40 scfh (Argon/Carbon Dioxide Blend), 0 to 150 scfh (Helium)	1	Brass	PTFE	Neoprene	78595A495	0000000

Valve Union Fittings

For Argon, Argon/Carbon Dioxide Blend, Carbon Dioxide, and Helium

Male Inlet × Female

Outlet With One

Flowmeter

1 Flowmeter—Valves with one flowmeter are for one piece of equipment on a tank. The flowmeter has a single scale.

	Inlet					Outlet					Material
	CGA No.	Location	Thread Direction	Pressure Gauge Reading Range, psi	No. of Stages	Thread Size	Location	Thread Direction	Flow Range	No. of Flowmeters	Body	Seal	Diaphragm		Each
UNF Female Outlet × NGO Male Inlet



		580	Side	Right Hand	0 to 4,000	Single	5/8"-18	Side	Right Hand	0 to 60 scfh (Argon) 0 to 60 scfh (Argon/Carbon Dioxide Blend) 0 to 50 scfh (Carbon Dioxide) 0 to 160 scfh (Helium)	1	Brass	Buna-N	Brass	78595A394	0000000

Valve Union Fittings

For Argon and Helium


Male Inlet × Female Outlet With One Flowmeter	Male Inlet × Female Outlet With Two Flowmeters

1 Flowmeter—Valves with one flowmeter are for one piece of equipment on a tank. The flowmeter has a single scale.

2 Flowmeters—Valve with two flowmeters lets you simultaneously run two pieces of equipment from one tank. Both flowmeters have a dual scale.

	Inlet					Outlet					Material
	CGA No.	Location	Thread Direction	Pressure Gauge Reading Range, psi	No. of Stages	Thread Size	Location	Thread Direction	Flow Range	No. of Flowmeters	Body	Seal	Diaphragm		Each
UNF Female Outlet × NGO Male Inlet



		580	Side	Right Hand	0 to 3,000	Two	5/8"-18	Side	Right Hand	0 to 18 scfh (Argon), 0 to 50 scfh (Helium)	1	Brass	PTFE	Neoprene	78595A492	0000000


		580	Side	Right Hand	0 to 3,000	Two	5/8"-18	Side	Right Hand	0 to 65 scfh (Argon), 0 to 200 scfh (Helium)	1	Brass	PTFE	Neoprene	78595A493	000000
		580	Side	Right Hand	0 to 4,000	Single	5/8"-18	Side	Right Hand	0 to 45 scfh (Argon), 0 to 140 scfh (Helium)	1	Brass	PTFE	Neoprene	78595A31	000000
		580	Side	Right Hand	0 to 4,000	Single	5/8"-18	Side	Right Hand	0 to 45 scfh (Argon), 0 to 140 scfh (Helium)	2	Brass	PTFE	Neoprene	7952A49	000000

Valve Union Fittings

For Carbon Dioxide

Female Inlet ×

Female Outlet With

One Flowmeter

1 Flowmeter—Valves with one flowmeter are for one piece of equipment on a tank. The flowmeter has a single scale.

	Inlet					Outlet					Material
	CGA No.	Location	Thread Direction	Pressure Gauge Reading Range, psi	No. of Stages	Thread Size	Location	Thread Direction	Flow Range	No. of Flowmeters	Body	Seal	Diaphragm		Each
UNF Female Outlet × NGO Female Inlet



		320	Side	Right Hand	0 to 4,000	Single	5/8"-18	Side	Right Hand	0 scfh to 70 scfh	1	Brass	PTFE	Neoprene	78595A46	0000000

Valve Union Fittings

For Helium and Hydrogen

Male Inlet × Female

Outlet With One

Flowmeter

1 Flowmeter—Valves with one flowmeter are for one piece of equipment on a tank. The flowmeter has a single scale.

	Inlet					Outlet					Material
	CGA No.	Location	Thread Direction	Pressure Gauge Reading Range, psi	No. of Stages	Thread Size	Location	Thread Direction	Flow Range	No. of Flowmeters	Body	Seal	Diaphragm		Each
UNF Female Outlet × NGO Male Inlet



		580	Side	Right Hand	0 to 4,000	Single	5/8"-18	Side	Right Hand	0 to 100 scfh (Helium), 0 to 140 scfh (Hydrogen)	1	Brass	PTFE	Neoprene	78595A499	0000000

Valve Union Fittings

For Hydrogen

Female Inlet ×

Male Outlet With

One Flowmeter

1 Flowmeter—Valves with one flowmeter are for one piece of equipment on a tank. The flowmeter has a single scale.

	Inlet					Outlet					Material
	CGA No.	Location	Thread Direction	Pressure Gauge Reading Range, psi	No. of Stages	Thread Size	Location	Thread Direction	Flow Range	No. of Flowmeters	Body	Seal	Diaphragm		Each
UNF Male Outlet × NGO Female Inlet



		350	Side	Left Hand	0 to 3,000	Single	9/16"-18	Side	Left Hand	0 scfh to 40 scfh	1	Brass	PTFE	Neoprene	78595A498	0000000

Valve Union Fittings

For Nitrogen

Male Inlet × Female

Outlet With One

Flowmeter

1 Flowmeter—Valves with one flowmeter are for one piece of equipment on a tank. The flowmeter has a single scale.

	Inlet					Outlet					Material
	CGA No.	Location	Thread Direction	Pressure Gauge Reading Range, psi	No. of Stages	Thread Size	Location	Thread Direction	Flow Range	No. of Flowmeters	Body	Seal	Diaphragm		Each
UNF Female Outlet × NGO Male Inlet



		580	Side	Right Hand	0 to 4,000	Single	5/8"-18	Side	Right Hand	0 scfh to 100 scfh	1	Brass	PTFE	Neoprene	78595A35	0000000

Valve Union Fittings

Sanitary Back-Pressure-Regulating Valves

Designed to meet 3-A sanitary standards, these valves regulate liquid, gas, and air pressure in hygienic zones of food and beverage plants. They’re often used at the end of pipelines on processing and sanitizing equipment. Made of 316 stainless steel, they won't corrode from frequent washdowns with harsh cleaners. With an extremely smooth interior that self-drains, bacteria won't have time or space to grow. The spring and internal valve mechanisms are sealed off behind the diaphragm, which also prevents contamination. They connect with quick-clamp fittings, so disassembling to clean your line takes little time.

These valves obstruct flow to maintain sufficient operating pressure in your system. If the system pressure exceeds the set pressure, they exhaust through the outlet. They meet ANSI/FCI 70-2 Class III standards for shut-off valves, meaning a maximum of 0.1% of fluid, gas, or air will escape through the outlet when they’re closed. An integrated T-handle lets you set the outlet pressure without additional tools. The diaphragm and seal resist repeated exposure to water, and they’re FDA compliant for direct contact with food.

	Inlet				Outlet				Lg.
	For Tube OD	Flange OD	Location	Max. Pressure, psi	For Tube OD	Flange OD	Location	Pressure Adjustment Method	End-to-End	Port-to-Port	For Use With	Temp. Range, ° F	Specs. Met	Food Industry Std.	Choose an Outlet Pressure, psi		Each
Quick Clamp







				316 Stainless Steel Body—EPDM Diaphragm and Seal

				3/4"	0.984"	Side	200	3/4"	0.984"	Bottom	T-Handle	6 5/8"	3 9/32"	Food, Beverage	-40 to 120	ANSI/FCI 70-2 Class III	3-A Certified 64-00, FDA Compliant 21 CFR 177.2600	5 to 30, 35 to 90, 50 to 105	4741N1	000000000


				1"	1.984"	Side	200	1"	1.984"	Bottom	T-Handle	6 11/16"	3 5/16"	Food, Beverage	-40 to 120	ANSI/FCI 70-2 Class III	3-A Certified 64-00, FDA Compliant 21 CFR 177.2600	5 to 30, 35 to 90, 50 to 105	4741N2	00000000




						316 Stainless Steel Body—PTFE Diaphragm and EPDM Seal

						2"	2.516"	Side	100	2"	2.516"	Bottom	T-Handle	11 5/8"	5 3/4"	Food, Beverage	-40 to 120	ANSI/FCI 70-2 Class III	3-A Certified 64-00, FDA Compliant 21 CFR 177.2600	10 to 25, 15 to 60	4741N4	00000000

Pressure-Regulating Block-Mount Hydraulic Valves


	D03 Mounting Pattern

These valves maintain a consistent pressure in a system when input pressure varies. They are often placed after a directional-control valve and before an actuator, such as a cylinder. Use screws to attach to an NFPA valve-mounting block (each component sold separately).

Valves											Screws
				Overall
NFPA Mounting Pattern	ISO Mounting Pattern	Max. Flow Rate, gpm	Max. Pressure, psi	Lg.	Wd.	Ht.	Set Pressure, psi	For Use With		Each	Pkg. Qty.		Pkg.







			Fluoroelastomer Seal

			D03	03	6.5	5,000	6 5/8"	2"	1 7/8"	365 to 3,000	Hydraulic Fluid	1517N11	000000000	4	1945N14	00000

Panel-Mount Back-Pressure-Regulating Valves for Air and Inert Gas

Threads below the adjustment knob and an included panel-mount nut allow you to add these valves to your instrument panel. Often used in systems running on air compressors, they're installed after pressure-sensitive equipment to obstruct flow and maintain a consistent operating pressure. If the system pressure exceeds the set pressure, they exhaust through the outlet. Adjust the set pressure within the range.

	Inlet				Outlet
	Pipe Size	Thread Size	Location	Max. Pressure, psi	Pipe Size	Thread Size	Location	Pressure Adjustment Method	End-to-End Lg.	Panel Cutout Dia.	For Use With	Temp. Range, ° F	Choose an Outlet Pressure, psi		Each
NPT Female







				Polysulfone Body—Buna-N Diaphragm and Silicone Seal

				1/8	—	Side	100	1/8	—	Side	Knob	1 1/8"	9/16"	Air, Inert Gas	40 to 150	0.5 to 3.5, 0.5 to 10, 0.5 to 30, 0.5 to 60, 0.5 to 90	99045K11	000000


				UNF Female







								Polysulfone Body—Buna-N Diaphragm and Silicone Seal

								—	10-32	Side	100	—	10-32	Side	Knob	1 1/8"	9/16"	Air, Inert Gas	40 to 150	0.5 to 3.5, 0.5 to 10, 0.5 to 30, 0.5 to 60, 0.5 to 90	99045K12	00000

Pressure-Regulating Valves for Cryogenic Liquids

These valves can withstand the extreme cold of liquid argon, liquid carbon dioxide, liquid nitrogen, and liquid oxygen. All are cleaned and bagged for oxygen service and other high-purity applications. They automatically reduce a high, variable inlet pressure to a lower, stable outlet pressure. Adjust the outlet pressure within the range.

	Inlet			Outlet
	Pipe Size	Location	Max. Pressure, psi	Pipe Size	Location	Pressure Adjustment Method	End-to-End Lg.	For Use With	Temp. Range, ° F	Choose an Outlet Pressure, psi		Each
NPT Female







				Brass Body—Bronze Diaphragm and PTFE Seal

				1/4	Side	600	1/4	Side	Screw	1 3/4"	Liquid Argon, Liquid Carbon Dioxide, Liquid Nitrogen, Liquid Oxygen	-320 to 150	15 to 65, 75 to 175, 100 to 250	47435K31	0000000


				3/8	Side	600	3/8	Side	Screw	1 3/4"	Liquid Argon, Liquid Carbon Dioxide, Liquid Nitrogen, Liquid Oxygen	-320 to 150	15 to 65, 75 to 175, 100 to 250	47435K32	000000

Tank-Mount Pressure-Regulating Valves for Cryogenic Cylinders

Automatically reduce a high inlet pressure from compressed gas tanks to a lower, stable outlet pressure. These valves can remove gases from liquid cryogenic cylinders. They have Compressed Gas Association (CGA) numbered inlet fittings for secure connections to compressed gas tanks. Choose a valve with the same CGA number as your tank and other system components. Valves come with a gauge to monitor outlet pressure. They are single stage and reduce pressure in one step, which causes the outlet pressure to fluctuate slightly as you empty the tank.

		Inlet				Outlet
	For Use With	CGA No.	Location	Thread Direction	No. of Stages	Thread Size	Location	Thread Direction	Pressure Range, psi	Pressure Adjustment Method	Temp. Range, ° F		Each
UNF Male Outlet × NGO Female Inlet







				Brass Body—Stainless Steel Diaphragm and PTFE Seal

				Carbon Dioxide	320	Side	Right Hand	Single	9/16"-18	Bottom	Right Hand	0 to 350	T-Handle	-20 to 120	7897A83	0000000


				Oxygen	540	Side	Right Hand	Single	9/16"-18	Bottom	Right Hand	0 to 125	T-Handle	-20 to 120	7897A84	000000


				UNF Male Outlet × NGO Male Inlet







								Brass Body—Stainless Steel Diaphragm and PTFE Seal

								Nitrogen, Argon	580	Side	Right Hand	Single	9/16"-18	Bottom	Right Hand	0 to 350	T-Handle	-20 to 120	7897A87	000000

Tank-Mount Pressure-Regulating Valves for Moisture Removal

Designed for nitrogen gas purging in air conditioning, refrigeration, and plumbing systems, these valves automatically reduce a high inlet pressure to a lower, stable outlet pressure. They have Compressed Gas Association (CGA) numbered inlet fittings for secure connections to compressed gas tanks. Choose a valve with the same CGA number as your tank and other system components. Valves have 45° flared tube outlet fittings for a tight seal on metal tubing. They come with a gauge to monitor inlet pressure from the tank. They are single stage and reduce pressure in one step, which causes the outlet pressure to fluctuate slightly as you empty the tank.

	Inlet					Outlet
	CGA No.	Location	Thread Direction	Pressure Gauge Reading Range, psi	No. of Stages	For Tube OD	Location	Thread Direction	Purging Flow Range, ft³/hr	Brazing Flow Range, ft³/hr	Testing Pressure Range, psi	For Use With	Temp. Range, ° F		Each
NGO Male Inlet × 45° Flared UN/UNF (SAE 45°) Male Outlet with 7/16"-20 End







				Brass Body—PTFE Seal

				580	Side	Right Hand	0 to 3,000	Single	1/4"	Side	Right Hand	25 to 35	3 to 6	0 to 500	Nitrogen	32 to 120	66325A52	0000000

Adjustable-Range Compressed Air Regulators

It's like getting four regulators in one—each comes with four springs so you can change between regulating pressure ranges of 2 to 30, 10 to 50, 30 to 90, and 100 to 180 psi. Remove the slotted-head screw to exchange springs; turn it to adjust the set pressure within the range. All are nonrelieving regulators, so they do not exhaust excess downstream pressure. Install in your air line after filters and before lubricators.

	Inlet			Outlet								Overall
	Pipe Size	Thread Type	Gender	Pipe Size	Thread Type	Gender	Airflow @ Pressure	Pressure Regulation Range	Max. Pressure, psi	Max. Temp., ° F	Accuracy	Ht.	Wd.		Each
Nonrelieving







				Brass Housing

				1/4	NPT	Female	1/4	NPT	Female	18 scfm @ 100 psi	2 to 30 psi, 10 to 50 psi, 30 to 90 psi, 100 to 180 psi	300	180	±5%	3 1/2"	2 1/4"	4771K7	0000000


				3/8	NPT	Female	3/8	NPT	Female	18 scfm @ 100 psi	2 to 30 psi, 10 to 50 psi, 30 to 90 psi, 100 to 180 psi	300	180	±5%	3 1/2"	2 1/4"	4771K8	000000

Tank-Mount Pressure-Regulating Valves with Flowmeter for Inert Gas

Commonly used in TIG welding where gas flow/coverage is a concern, these valves measure the gas flow rate in addition to regulating pressure. They automatically reduce a high inlet pressure from compressed gas tanks to a lower, stable outlet pressure. All have Compressed Gas Association (CGA) numbered inlet fittings for secure connections to compressed gas tanks. Choose a valve with the same CGA number as your tank and other system components. Valves have a gauge to monitor the outlet flow rate and a second gauge to monitor inlet pressure from the tank. They are single stage and reduce pressure in one step, which causes the outlet pressure to fluctuate slightly as you empty the tank.

For Argon


Female Outlet × Male Inlet	Female Outlet × Male Inlet with Hose

	Inlet					Outlet					Material
	CGA No.	Location	Thread Direction	Pressure Gauge Reading Range, psi	No. of Stages	Thread Size	Location	Thread Direction	Flow Range, scfh	Flow Gauge Included	Body	Seal	Diaphragm	Includes	Temp. Range, ° F		Each
UNF Female Outlet × NGO Male Inlet



		580	Side	Right Hand	0 to 4,000	Single	5/8"-18	Side	Right Hand	0 to 60	Yes	Brass	PTFE	Neoprene	—	-20 to 120	7997A65	0000000


		580	Side	Right Hand	0 to 4,000	Single	5/8"-18	Side	Right Hand	0 to 60	Yes	Brass	PTFE	Neoprene	10-ft. long, 3/16" dia. hose with 5/8"-18 male fittings on both ends	-20 to 120	7997A67	000000
		580	Side	Right Hand	0 to 4,000	Single	5/8"-18	Side	Right Hand	0 to 100	Yes	Brass	PTFE	Neoprene	—	-20 to 120	7997A52	000000

For Carbon Dioxide


Female Outlet × Female Inlet	Female Outlet × Female Inlet with Hose

	Inlet					Outlet					Material
	CGA No.	Location	Thread Direction	Pressure Gauge Reading Range, psi	No. of Stages	Thread Size	Location	Thread Direction	Flow Range, scfh	Flow Gauge Included	Body	Seal	Diaphragm	Includes	Temp. Range, ° F		Each
UNF Female Outlet × NGO Female Inlet



		320	Side	Right Hand	0 to 4,000	Single	5/8"-18	Side	Right Hand	0 to 60	Yes	Brass	PTFE	Neoprene	—	-20 to 120	7997A66	0000000


		320	Side	Right Hand	0 to 4,000	Single	5/8"-18	Side	Right Hand	0 to 60	Yes	Brass	PTFE	Neoprene	10-ft. long, 3/16" dia. hose with 5/8"-18 male fittings on both ends	-20 to 120	7997A68	000000
		320	Side	Right Hand	0 to 4,000	Single	5/8"-18	Side	Right Hand	0 to 100	Yes	Brass	PTFE	Neoprene	—	-20 to 120	7997A51	000000