Oxygen Pressure Regulating Valves

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For Use With

Liquid Carbon Dioxide

Inlet Pipe Size

Outlet Pressure

Body Material

Maximum Inlet Pressure

Less than 500 psi

500 psi to 999 psi

2,000 psi to 3,999 psi

Pipe Size

Outlet Pipe Size

Valve Function

Inlet Thread Type

Seal Material

Maximum Outlet Pressure Gauge Measurement

Inlet Gender

Shape

Outlet Thread Type

Outlet Pressure Adjustment Method

Valve Type

Maximum Pressure

1,000 psi to 1,999 psi

2,000 psi to 2,999 psi

3,000 psi to 3,999 psi

Thread Type

Outlet Connection Port

Maximum Temperature

RoHS

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)

44 Products

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	00000000	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	00000000	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	00000000	000000

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	00000000	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	00000000	000000

ASME-Code Fast-Acting Pressure-Relief Valves for Cryogenic Fluids

These valves meet ASME Code Section VIII for use with cryogenic pressure vessels. Rated for use with argon, carbon dioxide, helium, hydrogen, methane, nitrogen, and oxygen, they are cleaned and bagged for oxygen service and other high-purity applications. All spring fully open at the set pressure and remain open until the system pressure is restored below the set pressure. Attach a drain line to the threaded relief port for remote discharge.

NPT Male Inlet and NPT Female Relief Port

Inlet			Relief
Pipe Size	Location	Max. Pressure, psi	Port Pipe Size	Port Location	Shape	Overall Ht.	For Use With	Temp. Range, ° F	Valve Type	Certification	Choose a Set Pressure, psi		Each







			Brass Body—Brass Seal

			1/2	Bottom	600	3/4	Side	90° Elbow	6 9/16"	Argon, Carbon Dioxide, Helium, Hydrogen, Methane, Nitrogen, Oxygen	-320 to 150	Pop Safety	ASME BPVC.VIII	20 , 30 , 40 , 50 , 60 , 70 , 80 , 90 , 100 , 110 , 120 , 130 , 140 , 150 , 160 , 170 , 180 , 190 , 200 , 210 , 220 , 230 , 240 , 250 , 260 , 270 , 280 , 290 , 300	0000000	0000000


			3/4	Bottom	600	1	Side	90° Elbow	6 9/16"	Argon, Carbon Dioxide, Helium, Hydrogen, Methane, Nitrogen, Oxygen	-320 to 150	Pop Safety	ASME BPVC.VIII	20 , 30 , 40 , 50 , 60 , 70 , 80 , 90 , 100 , 110 , 120 , 130 , 140 , 150 , 160 , 170 , 180 , 190 , 200 , 210 , 220 , 230 , 240 , 250 , 260 , 270 , 280 , 290 , 300	0000000	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


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

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 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	00000000	0000000


				540	Side	Right Hand	0 to 4,000	Side	Right Hand	0 to 50	T-Handle	Brass	PTFE	Stainless Steel	-20 to 120	00000000	000000
				540	Side	Right Hand	0 to 4,000	Side	Right Hand	0 to 125	T-Handle	Brass	PTFE	Rubber	-20 to 120	0000000	000000
				540	Side	Right Hand	0 to 4,000	Side	Right Hand	0 to 125	T-Handle	Brass	PTFE	Stainless Steel	-20 to 120	0000000	000000
				540	Side	Right Hand	0 to 4,000	Side	Right Hand	0 to 145	Knob	Brass/Steel	PTFE	Rubber	-20 to 120	0000000	000000
				540	Side	Right Hand	0 to 4,000	Side	Right Hand	0 to 200	T-Handle	Brass	PTFE	Rubber	-20 to 120	000000	000000
				540	Side	Right Hand	0 to 4,000	Side	Right Hand	0 to 200	T-Handle	Brass	PTFE	Stainless Steel	-20 to 120	00000000	000000

Two Stage


NPT Female Outlet × Female 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 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	0000000	0000000


				540	Side	Right Hand	0 to 4,000	Side	Right Hand	0 to 250	T-Handle	Brass	PTFE	Stainless Steel	-20 to 120	0000000	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	00000000	000000


						540	Side	Right Hand	0 to 4,000	Side	Right Hand	0 to 50	T-Handle	Brass	PTFE	Stainless Steel	-20 to 120	00000000	000000
						540	Side	Right Hand	0 to 4,000	Side	Right Hand	0 to 125	T-Handle	Brass/Steel	PTFE	Rubber	-20 to 120	000000	000000
						540	Side	Right Hand	0 to 4,000	Side	Right Hand	0 to 125	T-Handle	Brass	PTFE	Stainless Steel	-20 to 120	0000000	000000

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	00000000	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	00000000	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	00000000	000000

Fast-Acting Pressure-Relief Valves for Cryogenic Liquids

Cleaned and bagged for oxygen service and other high-purity applications, these valves can withstand the extreme cold of liquid argon, liquid nitrogen, and liquid oxygen. They spring fully open at the set pressure and remain open until the system pressure is restored below the set pressure. All have a vented relief port to exhaust discharge directly.

NPT Male Inlet and Relief Vent

Inlet
Pipe Size	Location	Max. Pressure, psi	Relief Port Location	Shape	Overall Ht.	For Use With	Temp. Range, ° F	Valve Type	Choose a Set Pressure, psi		Each







			Brass Body—PTFE Seal

			1/4	Bottom	400	Side	90° Elbow	2 5/16"	Liquid Argon, Liquid Nitrogen, Liquid Oxygen	-320 to 350	Pop Safety	5 , 10 , 15 , 20 , 25 , 30 , 40 , 50 , 88 , 100 , 110 , 125 , 150 , 200 , 220 , 250 , 300 , 325 , 350 , 400	0000000	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 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	0000000	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	0000000	000000

Pressure-Relief Valves for Cryogenic Applications

Cleaned and bagged to meet CGA G-4.1 for oxygen service and other high-purity applications, these valves are built to withstand the extreme cold of liquid carbon dioxide, liquid nitrogen, and liquid oxygen. They begin opening at the set pressure and fully open at about 10% over the set pressure. Valves begin closing as pressure drops and fully close when the system pressure is restored below the set pressure. Set pressure is not adjustable. Valves are not intended for direct contact with cryogenic liquids.

Riser Tubes—Riser tubes (sold separately) are required to convert cryogenic liquids into gases before they contact the valve._3/8 NPT valve requires a _1/2 NPT × _3/8 NPT bushing when using a riser.

Adapters—Adapters (sold separately) convert the valve relief-port connection from UNEF female threads to NPT female threads.

	Valves											Riser Tubes		Adapters
	Inlet			Relief
	Pipe Size	Location	Max. Pressure, psi	Port Thread Size	Port Location	Overall Ht.	For Use With	Temp. Range, ° F	Choose a Set Pressure, psi		Each		Each		Each
NPT Male Inlet and UNEF Female Relief Port







				Brass Body

				1/4	Bottom	600	3/4"-20	Top	2 5/8"	Liquid Carbon Dioxide, Liquid Nitrogen, Liquid Oxygen	-320 to 165	22 , 35 , 50 , 75 , 100 , 125 , 150 , 200 , 250 , 300 , 350 , 400 , 450	00000000	000000	00000000	000000	00000000	000000


				3/8	Bottom	600	3/4"-20	Top	2 5/8"	Liquid Carbon Dioxide, Liquid Nitrogen, Liquid Oxygen	-320 to 165	22 , 35 , 50 , 75 , 100 , 125 , 150 , 200 , 250 , 300 , 350 , 400 , 450	00000000	00000	00000000	00000	00000000	00000
				1/2	Bottom	600	3/4"-20	Top	2 13/16"	Liquid Carbon Dioxide, Liquid Nitrogen, Liquid Oxygen	-320 to 165	22 , 35 , 50 , 75 , 100 , 125 , 150 , 200 , 250 , 300 , 350 , 400 , 450	00000000	00000	00000000	00000	00000000	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	00000000	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	00000000	000000

Vacuum Breakers for Chemicals

A plastic body withstands pH neutralizing, cleaning, and plating solutions containing sodium hydroxide, methyl ethyl ketone, and other harsh chemicals. Also known as vacuum-breaking valves, these valves have vents that open when pressure drops to relieve vacuum conditions and prevent backward suction from drawing liquid into upstream piping.

Diaphragm Check Valve

								Material			CPVC Body				PVC Body
	Inlet Pipe Size	Outlet Pipe SIze	For Pipe Schedule	Flow Coefficient (Cv)	Max. Pressure @ Temp.	Min. Opening Pressure, psi	End-to-End Lg.	Seal	DIaphragm	For Use With	Temp. Range, ° F	Color		Each	Temp. Range, ° F	Color		Each
NPT Female Inlet × NPT Female Outlet



		1/2	1/2	80	Not Rated	100 psi @ 75° F	1	4 5/16"	Fluoroelastomer	Fluoroelastomer	Beverage, Food, Air, Ammonia, Argon, Carbon Dioxide, Chlorinated Water, Diesel Fuel, Drinking Water, Ethylene Glycol, Helium, Hydrochloric Acid, Kerosene, Krypton, Liquid Carbon Dioxide, Methanol (Methyl Alcohol), Methyl Ethyl Ketone (MEK), Mineral Spirits, Natural Gas, Neon, Nitric Acid, Nitrogen, Oil, Oxygen, Soap Solutions, Sodium Hydroxide (Caustic Soda), Sodium Hypochlorite (Bleach), Water, Xenon	40 to 180	Light Gray	0000000	0000000	40 to 140	Gray	000000	0000000


		3/4	3/4	80	Not Rated	100 psi @ 75° F	1	4 5/8"	Fluoroelastomer	Fluoroelastomer	Beverage, Food, Air, Ammonia, Argon, Carbon Dioxide, Chlorinated Water, Diesel Fuel, Drinking Water, Ethylene Glycol, Helium, Hydrochloric Acid, Kerosene, Krypton, Liquid Carbon Dioxide, Methanol (Methyl Alcohol), Methyl Ethyl Ketone (MEK), Mineral Spirits, Natural Gas, Neon, Nitric Acid, Nitrogen, Oil, Oxygen, Soap Solutions, Sodium Hydroxide (Caustic Soda), Sodium Hypochlorite (Bleach), Water, Xenon	40 to 180	Light Gray	0000000	000000	40 to 140	Gray	0000000	000000
		1	1	80	Not Rated	100 psi @ 75° F	1	5 1/8"	Fluoroelastomer	Fluoroelastomer	Beverage, Food, Air, Ammonia, Argon, Carbon Dioxide, Chlorinated Water, Diesel Fuel, Drinking Water, Ethylene Glycol, Helium, Hydrochloric Acid, Kerosene, Krypton, Liquid Carbon Dioxide, Methanol (Methyl Alcohol), Methyl Ethyl Ketone (MEK), Mineral Spirits, Natural Gas, Neon, Nitric Acid, Nitrogen, Oil, Oxygen, Soap Solutions, Sodium Hydroxide (Caustic Soda), Sodium Hypochlorite (Bleach), Water, Xenon	40 to 180	Light Gray	0000000	000000	40 to 140	Gray	0000000	000000

Spring-Loaded Piston Check Valve

								Material				CPVC Body				PVC Body
	Inlet Pipe Size	Outlet Pipe SIze	For Pipe Schedule	Flow Coefficient (Cv)	Max. Pressure @ Temp.	Min. Opening Pressure, psi	End-to-End Lg.	Seal	Piston	Spring	For Use With	Temp. Range, ° F	Color		Each	Temp. Range, ° F	Color		Each
NPT Female Inlet × NPT Female Outlet



		1 1/2	1 1/2	80	Not Rated	100 psi @ 75° F	1	7 15/16"	Fluoroelastomer	CPVC	Polymer	Beverage, Food, Air, Ammonia, Argon, Carbon Dioxide, Chlorinated Water, Diesel Fuel, Drinking Water, Ethylene Glycol, Helium, Hydrochloric Acid, Kerosene, Krypton, Liquid Carbon Dioxide, Methanol (Methyl Alcohol), Methyl Ethyl Ketone (MEK), Mineral Spirits, Natural Gas, Neon, Nitric Acid, Nitrogen, Oil, Oxygen, Soap Solutions, Sodium Hydroxide (Caustic Soda), Sodium Hypochlorite (Bleach), Water, Xenon	40 to 180	Light Gray	0000000	0000000	—	—	———	0


		2	2	80	Not Rated	100 psi @ 75° F	1	8 1/2"	Fluoroelastomer	PVC	Polymer	Beverage, Food, Air, Ammonia, Argon, Carbon Dioxide, Chlorinated Water, Diesel Fuel, Drinking Water, Ethylene Glycol, Helium, Hydrochloric Acid, Kerosene, Krypton, Liquid Carbon Dioxide, Methanol (Methyl Alcohol), Methyl Ethyl Ketone (MEK), Mineral Spirits, Natural Gas, Neon, Nitric Acid, Nitrogen, Oil, Oxygen, Soap Solutions, Sodium Hydroxide (Caustic Soda), Sodium Hypochlorite (Bleach), Water, Xenon	—	—	———	0	40 to 140	Gray	0000000	0000000

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

				Oxygen	540	Side	Right Hand	Single	9/16"-18	Bottom	Right Hand	0 to 125	T-Handle	-20 to 120	0000000	0000000