CGA 346 Welding Gas Regulators

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Inlet CGA Number

For Use With

Outlet Pressure

Maximum Outlet Pressure Gauge Measurement

Maximum Inlet Pressure

Inlet Gender

Inlet Thread Type

Outlet Connection

Outlet Thread Type

Body Material

Inlet Connection Port

Hose

Outlet Pressure Gauge Included

Yes

Outlet Pressure Adjustment Method

Outlet Location

Maximum Pressure

1,000 psi to 1,999 psi

2,000 psi to 3,999 psi

4,000 psi to 4,999 psi

Minimum Outlet Pressure Gauge Measurement

0 psi

Fitting Connection

Swagelok®

Threaded

Outlet Connection Port

REACH

Outlet Gender

RoHS

Inlet Thread Direction

Right Hand

DFARS Specialty Metals

Exempt

Export Control Classification Number (ECCN)

Shape

Number of Stages

5 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.

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

Valves with a stainless steel diaphragm can withstand harsh environments.

Single-Stage Valves

Male Outlet × Female Inlet Single-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
For Use With Breathable Air
9/16"-18 UNF Male Outlet × NGO Female Inlet
CGA 346	Side	Right Hand	0 to 4,000	Side	Right Hand	0 to 125	T-Handle	Brass	PTFE	Rubber	0000000	0000000
CGA 346	Side	Right Hand	0 to 4,000	Side	Right Hand	0 to 200	T-Handle	Brass	PTFE	Rubber	0000000	000000

Two-Stage Valves

Female 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
For Use With Breathable Air
1/4 NPT Female Outlet × NGO Female Inlet
CGA 346	Side	Right Hand	0 to 4,000	Side	Right Hand	0 to 250	T-Handle	Brass	PTFE	Stainless Steel	00000000	0000000

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

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

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 Use With Breathable Air

Female Outlet × Female Inlet Straight With Knob

Inlet					Outlet					Material
CGA Number	Location	Thread Direction	Pressure Gauge Range, psi	Stage	For Tube OD	Location	Pressure Range, psi	Pressure Adjustment Method	Shape	Body	Seal	Diaphragm		Each
NGO Female Inlet × Swagelok® Female Outlet
CGA 346	Side	Right Hand	0 to 4,000	Single	1/4"	Side	0 to 1,500	Knob	Straight	Brass	PCTFE	Polyurethane	0000000	0000000
CGA 346	Side	Right Hand	0 to 4,000	Single	1/4"	Side	0 to 2,500	Knob	Straight	Brass	PCTFE	Polyurethane	0000000	000000

About Gas Regulators

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

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