Industrial Air Regulators

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Outlet Pressure

Inlet CGA Number

Maximum Outlet Pressure Gauge Measurement

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Outlet Thread Size

Outlet Pressure Adjustment Method

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1,000 psi to 2,999 psi

3,000 psi or greater

DFARS Specialty Metals

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EAR99

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Seal Material

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Material

Inlet Thread Size

Thread Direction

39 Products

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.

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







				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	0000000




						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

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 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