McMaster-Carr

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	For Use With For Use With

Acetylene

	Body Material Body Material	Show

Brass/Steel

	Body Material Body Material	Hide

Alumina Ceramic

Aluminum

Brass

Brass/Stainless Steel

Nickel

	Stage Stage

Single

Two

	Inlet CGA Number Inlet CGA Number

	Maximum Outlet Pressure Gauge Maximum Outlet Pressure Gauge

	Maximum Inlet Pressure Maximum Inlet Pressure

500 to 999 psi

1,000 to 3,999 psi

	Outlet Pressure Adjustment Method Outlet Pressure Adjustment Method

Knob

T-Handle

	Inlet Gender Inlet Gender

Female

Male

	Outlet Gender Outlet Gender

Female

Male

	Inlet Connection Type Inlet Connection Type

	Hose

	Inlet Thread Type Inlet Thread Type

National Gas Outlet (NGO)

	Outlet Pressure Gauge Included Outlet Pressure Gauge Included

Yes

	Valve Type Valve Type

Pressure Regulator

	Outlet Pressure Outlet Pressure

0-15 psi

0-50 psi

0-125 psi

0-145 psi

5-50 psi

	Outlet Thread Size Outlet Thread Size

9/16"-18

5/8"-18

	Outlet Thread Type Outlet Thread Type

UNF

	Shape Shape

	30° Elbow

	Diaphragm Material Diaphragm Material

Rubber

	Flow Coefficient (Cv) Flow Coefficient (Cv)

0.15

0.17

	Outlet Connection Type Outlet Connection Type

	Pipe

	Activation Activation

Pressure Driven

	Inlet Connection Style Inlet Connection Style

Threaded

	Inlet Pressure Gauge Included Inlet Pressure Gauge Included

Yes

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12 Products

About Gas Regulators

For Use With: See Table
Temperature Range: -20° to 120° F

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 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 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.

Single-Stage Valves

Male Outlet × Male Inlet Single-Stage Valve With Knob

Male Outlet × Female Inlet Single-Stage Valve With Knob

Inlet				Outlet				Material
CGA Number	Location	Thread Direction	Pressure Gauge Range, psi	Location	Thread Direction	Pressure Range, psi	Pressure Adjustment Method	Body	Seal	Diaphragm		Each
For Use With Argon, Helium, and Nitrogen
9/16"-18 UNF Male Outlet × NGO Male Inlet
CGA 580	Side	Right Hand	0 to 4,000	Side	Right Hand	0 to 145	Knob	Brass/Steel	PTFE	Rubber	0000000	0000000
For Use With Oxygen
9/16"-18 UNF Male Outlet × NGO Female Inlet
CGA 540	Side	Right Hand	0 to 4,000	Side	Right Hand	0 to 145	Knob	Brass/Steel	PTFE	Rubber	0000000	000000
For Use With Air
9/16"-18 UNF Male Outlet × NGO Male Inlet
CGA 590	Side	Left Hand	0 to 4,000	Side	Left Hand	0 to 145	Knob	Brass/Steel	PTFE	Rubber	0000000	000000

Two-Stage Valves

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

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

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

Inlet				Outlet				Material
CGA Number	Location	Thread Direction	Pressure Gauge Range, psi	Location	Thread Direction	Pressure Range, psi	Pressure Adjustment Method	Body	Seal	Diaphragm		Each
Argon, Helium, and Nitrogen
5/8"-18 UNF Female Outlet × NGO Male Inlet
CGA 580	Side	Right Hand	0 to 4,000	Side	Right Hand	0 to 125	T-Handle	Brass/Steel	PTFE	Rubber	0000000	0000000
Carbon Dioxide
5/8"-18 UNF Female Outlet × NGO Female Inlet
CGA 320	Side	Right Hand	0 to 4,000	Side	Right Hand	0 to 125	T-Handle	Brass/Steel	PTFE	Rubber	0000000	000000
Oxygen
9/16"-18 UNF Male Outlet × NGO Female Inlet
CGA 540	Side	Right Hand	0 to 4,000	Side	Right Hand	0 to 125	T-Handle	Brass/Steel	PTFE	Rubber	000000	000000

Tank-Mount Pressure-Regulating Valves for Fuel Gases

For Use With: See Table
Temperature Range: -20° to 120° F

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 Valves

Male Outlet × Female Inlet Single-Stage Valve With Knob

Male Outlet × Male Inlet Single-Stage Valve With Knob

Inlet				Outlet					Material
CGA Number	Location	Thread Direction	Pressure Gauge Range, psi	Thread Size	Location	Thread Direction	Pressure Range, psi	Pressure Adjustment Method	Body	Seal	Diaphragm		Each
For Use With Acetylene
UNF Male Outlet × NGO Female Inlet
CGA 300	Side	Right Hand	0 to 400	9/16"-18	Side	Left Hand	0 to 15	Knob	Brass/Steel	PTFE	Rubber	0000000	0000000
UNF Male Outlet × NGO Male Inlet
CGA 510	Side	Left Hand	0 to 400	9/16"-18	Side	Left Hand	0 to 15	Knob	Brass/Steel	PTFE	Rubber	0000000	000000
For Use With Propane and Propylene
UNF Male Outlet × NGO Male Inlet
CGA 510	Side	Left Hand	0 to 400	9/16"-18	Side	Left Hand	5 to 50	Knob	Brass/Steel	PTFE	Rubber	0000000	000000

Two-Stage Valves

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

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

Inlet				Outlet					Material
CGA Number	Location	Thread Direction	Pressure Gauge Range, psi	Thread Size	Location	Thread Direction	Pressure Range, psi	Pressure Adjustment Method	Body	Seal	Diaphragm		Each
For Use With Acetylene
UNF Male Outlet × NGO Female Inlet
CGA 300	Side	Right Hand	0 to 400	9/16"-18	Side	Left Hand	0 to 15	T-Handle	Brass/Steel	PTFE	Rubber	000000	0000000
UNF Male Outlet × NGO Male Inlet
CGA 510	Side	Left Hand	0 to 400	9/16"-18	Side	Left Hand	0 to 15	T-Handle	Brass/Steel	PTFE	Rubber	0000000	000000
For Use With Propane and Propylene
UNF Male Outlet × NGO Male Inlet
CGA 510	Side	Left Hand	0 to 400	9/16"-18	Side	Left Hand	0 to 50	T-Handle	Brass/Steel	PTFE	Rubber	0000000	000000

Terms and Conditions and Privacy Policy

About Gas Regulators

Tank-Mount Pressure-RegulatingValves for Air and Inert Gas

Tank-Mount Pressure-Regulating Valves for Fuel Gases

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