Tank Flowmeters | McMaster-Carr

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	For Use With For Use With

Acetylene

Air

Argon

Argon/Carbon Dioxide
Blend

Liquid Carbon Dioxide

	Mounting Location Mounting Location	Show

Tank

	Mounting Location Mounting Location	Hide

	Inlet CGA Number Inlet CGA Number

	Stage Stage

Single

Two

	Inlet Gender Inlet Gender

Male

Female

	Outlet Gender Outlet Gender

Female

Male

	Maximum Inlet Pressure Maximum Inlet Pressure

500 psi

3,000 psi

7,500 psi

	Outlet Connection Type Outlet Connection Type


Pipe	Tube

	Number of Flowmeters Number of Flowmeters

	Shape Shape

	Straight
	30° Elbow
	90° Elbow

	Outlet Pressure Adjustment Method Outlet Pressure Adjustment Method

Knob

T-Handle

	Body Material Body Material

Brass

Brass/Steel

	Outlet Pressure Gauge Included Outlet Pressure Gauge Included

Yes

	Inlet Thread Type Inlet Thread Type

National Gas Outlet (NGO)

	Maximum Outlet Pressure Maximum Outlet Pressure

	Maximum Outlet Flow Maximum Outlet Flow

	Number of Gauge Ports Number of Gauge Ports

	Outlet Thread Type Outlet Thread Type

UNF

NPT

SAE

	Inlet Connection Type Inlet Connection Type

	Hose

	Outlet Connection Style Outlet Connection Style

Flared

Threaded

Yor-Lok

	Inlet Pressure Gauge Included Inlet Pressure Gauge Included

Yes

	Minimum Temperature Minimum Temperature

-99° to -25° F

-24° to 0° F

25° F or greater

	Inlet Thread Size Inlet Thread Size

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96 Products

About Gas Regulators

Male Inlet × Female Outlet With One Flowmeter

Female Inlet × Female Outlet With One Flowmeter

Male Inlet × Female Outlet With Two Flowmeters

Female Inlet × Male Outlet With One Flowmeter

For Use With: See Table

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.

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 one flowmeter are for one piece of equipment on a tank. The flowmeter has a single scale.

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

Adapters (sold separately) for valves with one flowmeter change the outlet fitting from a 5/8"-18 to 9/16"-18 male connection.

For Use With Argon

Inlet					Outlet					Material
CGA Number	Location	Thread Direction	Pressure Gauge Range, psi	Stage	Thread Size	Location	Thread Direction	Flow Range, scfh	Number of Flowmeters	Body	Seal	Diaphragm		Each
UNF Female Outlet × NGO Male Inlet
CGA 580	Side	Right Hand	0 to 4,000	Single	5/8"-18	Side	Right Hand	0 to 70	1	Brass	PTFE	Neoprene	00000000	0000000

Optional Adapter

00000000

Each

00000

For Use With Argon and Argon/Carbon Dioxide Blend

Inlet					Outlet					Material
CGA Number	Location	Thread Direction	Pressure Gauge Range, psi	Stage	Thread Size	Location	Thread Direction	Flow Range, scfh	Number of Flowmeters	Body	Seal	Diaphragm		Each
UNF Female Outlet × NGO Female Inlet
CGA 320	Side	Right Hand	0 to 3,000	Single	9/16"-18	Side	Right Hand	0 to 50 (Argon), 0 to 38 (Argon/Carbon Dioxide Blend)	1	Brass	PTFE	Neoprene	000000000	0000000
UNF Female Outlet × NGO Male Inlet
CGA 580	Side	Right Hand	0 to 3,000	Single	5/8"-20	Side	Right Hand	0 to 37 1/2 (Argon), 0 to 37 1/2 (Argon/Carbon Dioxide Blend)	1	Brass	PTFE	Neoprene	000000000	000000

Optional Adapter

00000000

Each

00000

For Use With Argon and Helium

Inlet					Outlet					Material
CGA Number	Location	Thread Direction	Pressure Gauge Range, psi	Stage	Thread Size	Location	Thread Direction	Flow Range, scfh	Number of Flowmeters	Body	Seal	Diaphragm		Each
UNF Female Outlet × NGO Male Inlet
CGA 580	Side	Right Hand	0 to 3,000	Single	5/8"-20	Side	Right Hand	0 to 65 (Argon), 0 to 200 (Helium)	1	Brass	PTFE	Neoprene	000000000	0000000
CGA 580	Side	Right Hand	0 to 3,000	Two	5/8"-20	Side	Right Hand	0 to 18 (Argon), 0 to 50 (Helium)	1	Brass	PTFE	Neoprene	000000000	000000
CGA 580	Side	Right Hand	0 to 3,000	Two	5/8"-20	Side	Right Hand	0 to 65 (Argon), 0 to 200 (Helium)	1	Brass	PTFE	Neoprene	000000000	000000
CGA 580	Side	Right Hand	0 to 4,000	Single	5/8"-18	Side	Right Hand	0 to 45 (Argon), 0 to 140 (Helium)	1	Brass	PTFE	Neoprene	00000000	000000
CGA 580	Side	Right Hand	0 to 4,000	Single	5/8"-18	Side	Right Hand	0 to 45 (Argon), 0 to 140 (Helium)	2	Brass	PTFE	Neoprene	0000000	000000

Optional Adapter

00000000

Each

00000

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

Inlet					Outlet					Material
CGA Number	Location	Thread Direction	Pressure Gauge Range, psi	Stage	Thread Size	Location	Thread Direction	Flow Range, scfh	Number of Flowmeters	Body	Seal	Diaphragm		Each
UNF Female Outlet × NGO Male Inlet
CGA 580	Side	Right Hand	0 to 3,000	Single	5/8"-20	Side	Right Hand	0 to 40 (Argon), 0 to 40 (Argon/Carbon Dioxide Blend), 0 to 150 (Helium) to150	1	Brass	PTFE	Neoprene	000000000	0000000
CGA 580	Side	Right Hand	0 to 3,000	Two	5/8"-20	Side	Right Hand	0 to 40 (Argon), 0 to 40 (Argon/Carbon Dioxide Blend), 0 to 150 (Helium) to150	1	Brass	PTFE	Neoprene	000000000	000000

Optional Adapter

00000000

Each

00000

For Use With Carbon Dioxide

Inlet					Outlet					Material
CGA Number	Location	Thread Direction	Pressure Gauge Range, psi	Stage	Thread Size	Location	Thread Direction	Flow Range, scfh	Number of Flowmeters	Body	Seal	Diaphragm		Each
UNF Female Outlet × NGO Female Inlet
CGA 320	Side	Right Hand	0 to 4,000	Single	5/8"-18	Side	Right Hand	0 to 70	1	Brass	PTFE	Neoprene	00000000	0000000

Optional Adapter

00000000

Each

00000

For Use With Helium and Hydrogen

Inlet					Outlet					Material
CGA Number	Location	Thread Direction	Pressure Gauge Range, psi	Stage	Thread Size	Location	Thread Direction	Flow Range, scfh	Number of Flowmeters	Body	Seal	Diaphragm		Each
UNF Female Outlet × NGO Male Inlet
CGA 580	Side	Right Hand	0 to 4,000	Single	5/8"-18	Side	Right Hand	0 to 100 (Helium), 0 to 140 (Hydrogen)	1	Brass	PTFE	Neoprene	000000000	0000000

Optional Adapter

00000000

Each

00000

For Use With Hydrogen

Inlet					Outlet					Material
CGA Number	Location	Thread Direction	Pressure Gauge Range, psi	Stage	Thread Size	Location	Thread Direction	Flow Range, scfh	Number of Flowmeters	Body	Seal	Diaphragm		Each
UNF Male Outlet × NGO Female Inlet
CGA 350	Side	Left Hand	0 to 3,000	Single	9/16"-18	Side	Left Hand	0 to 40	1	Brass	PTFE	Neoprene	000000000	0000000

Optional Adapter

00000000

Each

00000

For Use With Nitrogen

Inlet					Outlet					Material
CGA Number	Location	Thread Direction	Pressure Gauge Range, psi	Stage	Thread Size	Location	Thread Direction	Flow Range, scfh	Number of Flowmeters	Body	Seal	Diaphragm		Each
UNF Female Outlet × NGO Male Inlet
CGA 580	Side	Right Hand	0 to 4,000	Single	5/8"-18	Side	Right Hand	0 to 100	1	Brass	PTFE	Neoprene	00000000	0000000

Optional Adapter

00000000

Each

00000

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

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

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 Use With Argon

Female Outlet × Male Inlet

Female Outlet × Male Inlet With Hose

Inlet					Outlet					Material
CGA Number	Location	Thread Direction	Pressure Gauge Range, psi	Stage	Thread Size	Location	Thread Direction	Flow Range, scfh	Flow Gauge Included	Body	Seal	Diaphragm	Includes		Each
UNF Female Outlet × NGO Male Inlet
CGA 580	Side	Right Hand	0 to 4,000	Single	5/8"-18	Side	Right Hand	0 to 60	Yes	Brass	PTFE	Neoprene	__	0000000	0000000
CGA 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	0000000	000000
CGA 580	Side	Right Hand	0 to 4,000	Single	5/8"-18	Side	Right Hand	0 to 100	Yes	Brass	PTFE	Neoprene	__	0000000	000000

For Use With Carbon Dioxide

Female Outlet × Female Inlet

Female Outlet × Female Inlet With Hose

Inlet					Outlet					Material
CGA Number	Location	Thread Direction	Pressure Gauge Range, psi	Stage	Thread Size	Location	Thread Direction	Flow Range, scfh	Flow Gauge Included	Body	Seal	Diaphragm	Includes		Each
UNF Female Outlet × NGO Female Inlet
CGA 320	Side	Right Hand	0 to 4,000	Single	5/8"-18	Side	Right Hand	0 to 60	Yes	Brass	PTFE	Neoprene	__	0000000	0000000
CGA 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	0000000	000000
CGA 320	Side	Right Hand	0 to 4,000	Single	5/8"-18	Side	Right Hand	0 to 100	Yes	Brass	PTFE	Neoprene	__	0000000	000000

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

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.

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.

Valves with flared tube outlet fittings form a tight seal on metal tubing.

Single-Stage Valves

Flared Outlet × Male Inlet Single-Stage Valve With T-Handle

Female Outlet × Male Inlet Single-Stage Valve With Knob

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

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

Male Outlet × Male Inlet Single-Stage Valve With Knob

Female Oulet × Female Inlet Single-Stage Valve With Knob

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

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
37° Flared UNF Male Outlet with 7/16"-20 End × NGO Male Inlet
CGA 580	Side	Right Hand	0 to 4,000	Side	Right Hand	10 to 200	T-Handle	Brass	Polyurethane	Neoprene/Nylon	00000000	0000000
45° Flared SAE Female Outlet with 7/16"-20 End × NGO Male Inlet
CGA 580	Side	Right Hand	0 to 4,000	Side	Right Hand	0 to 250	T-Handle	Brass	PTFE	Neoprene	00000000	000000
45° Flared SAE Male Outlet with 7/16"-20 End × NGO Male Inlet
CGA 580	Side	Right Hand	0 to 4,000	Side	Right Hand	0 to 500	T-Handle	Brass	PTFE	Neoprene	00000000	000000
5/8"-18 UNF Female Outlet with 7/16"-20 End × NGO Male Inlet
CGA 580	Side	Right Hand	0 to 4,568	Side	Right Hand	5 to 150	Knob	Brass	Polyester/Polyurethane	Neoprene/Nylon	00000000	000000
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	PTFE	Stainless Steel	00000000	000000
9/16"-18 UNF Female Outlet × NGO Male Inlet
CGA 580	Side	Right Hand	0 to 4,000	Side	Right Hand	0 to 50	T-Handle	Brass	PTFE	Neoprene	00000000	000000
9/16"-18 UNF Male Outlet × NGO Male Inlet
CGA 580	Side	Right Hand	0 to 4,000	Side	Right Hand	0 to 125	T-Handle	Brass	PTFE	Rubber	0000000	000000
CGA 580	Side	Right Hand	0 to 4,000	Side	Right Hand	0 to 145	Knob	Brass/Steel	PTFE	Rubber	0000000	000000
CGA 580	Side	Right Hand	0 to 4,000	Side	Right Hand	0 to 200	T-Handle	Brass	PTFE	Rubber	0000000	000000
For Use With 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 145	Knob	Brass	PTFE	Neoprene	00000000	000000
9/16"-18 UNF Male Outlet × NGO Female Inlet
CGA 320	Side	Right Hand	0 to 4,000	Side	Right Hand	0 to 125	T-Handle	Brass	PTFE	Rubber	0000000	000000
For Use With Oxygen
9/16"-18 UNF Male Outlet × NGO Female Inlet
CGA 540	Side	Right Hand	0 to 4,000	Side	Left Hand	0 to 50	Knob	Brass	PTFE	Neoprene	00000000	000000
CGA 540	Side	Right Hand	0 to 4,000	Side	Right Hand	0 to 50	T-Handle	Brass	PTFE	Neoprene	00000000	000000
CGA 540	Side	Right Hand	0 to 4,000	Side	Right Hand	0 to 50	T-Handle	Brass	PTFE	Stainless Steel	00000000	000000
CGA 540	Side	Right Hand	0 to 4,000	Side	Right Hand	0 to 125	T-Handle	Brass	PTFE	Rubber	0000000	000000
CGA 540	Side	Right Hand	0 to 4,000	Side	Right Hand	0 to 125	T-Handle	Brass	PTFE	Stainless Steel	0000000	000000
CGA 540	Side	Right Hand	0 to 4,000	Side	Right Hand	0 to 145	Knob	Brass/Steel	PTFE	Rubber	0000000	000000
CGA 540	Side	Right Hand	0 to 4,000	Side	Right Hand	0 to 200	T-Handle	Brass	PTFE	Rubber	000000	000000
CGA 540	Side	Right Hand	0 to 4,000	Side	Right Hand	0 to 200	T-Handle	Brass	PTFE	Stainless Steel	00000000	000000
For Use With Air
1/4 NPT Male Outlet × NGO Male Inlet
CGA 590	Side	Left Hand	0 to 4,000	Side	Right Hand	0 to 125	T-Handle	Brass	PTFE	Rubber	0000000	000000
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
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	000000
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 × 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

Male Outlet × Male 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 Argon, Helium, and Nitrogen
1/4 NPT Female Outlet × NGO Male Inlet
CGA 580	Side	Right Hand	0 to 4,000	Side	Right Hand	0 to 250	T-Handle	Brass	PTFE	Neoprene	00000000	0000000
CGA 590	Side	Right Hand	0 to 4,000	Side	Right Hand	0 to 250	T-Handle	Brass	PTFE	Stainless Steel	00000000	000000
5/8"-18 UNF Female Outlet × NGO Male Inlet
CGA 580	Side	Right Hand	0 to 4,000	Side	Right Hand	0 to 50	T-Handle	Brass	PTFE	Neoprene	00000000	000000
CGA 580	Side	Right Hand	0 to 4,000	Side	Right Hand	0 to 50	T-Handle	Brass	PTFE	Stainless Steel	0000000	000000
CGA 580	Side	Right Hand	0 to 4,000	Side	Right Hand	0 to 125	T-Handle	Brass	PTFE	Stainless Steel	0000000	000000
CGA 580	Side	Right Hand	0 to 4,000	Side	Right Hand	0 to 125	T-Handle	Brass/Steel	PTFE	Rubber	0000000	000000
For Use With Carbon Dioxide
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	000000
5/8"-18 UNF Female Outlet × NGO Female Inlet
CGA 320	Side	Right Hand	0 to 4,000	Side	Right Hand	0 to 50	T-Handle	Brass	PTFE	Neoprene	00000000	000000
CGA 320	Side	Right Hand	0 to 4,000	Side	Right Hand	0 to 125	T-Handle	Brass/Steel	PTFE	Rubber	0000000	000000
CGA 590	Side	Right Hand	0 to 4,000	Side	Right Hand	0 to 50	T-Handle	Brass	PTFE	Stainless Steel	00000000	000000
CGA 590	Side	Right Hand	0 to 4,000	Side	Right Hand	0 to 125	T-Handle	Brass	PTFE	Stainless Steel	00000000	000000
NPT Female Outlet × NGO Female Inlet
CGA 320	Side	Right Hand	0 to 4,000	Side	Right Hand	0 to 250	T-Handle	Brass	PTFE	Neoprene	00000000	000000
For Use With Oxygen
1/4 NPT Female Outlet × NGO Female Inlet
CGA 540	Side	Right Hand	0 to 4,000	Side	Right Hand	0 to 250	T-Handle	Brass	PTFE	Stainless Steel	0000000	000000
1/4 NPT Male Outlet × NGO Female Inlet
CGA 540	Side	Right Hand	0 to 4,000	Side	Right Hand	0 to 250	T-Handle	Brass	PTFE	Neoprene	0000000	000000
9/16"-18 UNF Male Outlet × NGO Female Inlet
CGA 540	Side	Right Hand	0 to 4,000	Side	Right Hand	0 to 50	T-Handle	Brass	PTFE	Neoprene	00000000	000000
CGA 540	Side	Right Hand	0 to 4,000	Side	Right Hand	0 to 50	T-Handle	Brass	PTFE	Stainless Steel	00000000	000000
CGA 540	Side	Right Hand	0 to 4,000	Side	Right Hand	0 to 125	T-Handle	Brass	PTFE	Stainless Steel	0000000	000000
CGA 540	Side	Right Hand	0 to 4,000	Side	Right Hand	0 to 125	T-Handle	Brass/Steel	PTFE	Rubber	000000	000000
For Use With Air
1/4 NPT Male Outlet × NGO Male Inlet
CGA 346	Side	Left Hand	0 to 4,000	Side	Right Hand	0 to 125	T-Handle	Brass	PTFE	Stainless Steel	00000000	000000
CGA 580	Side	Left Hand	0 to 4,000	Side	Right Hand	0 to 250	T-Handle	Brass	PTFE	Stainless Steel	00000000	000000
For Use With Breathable Air
1/4 NPT Female Outlet × NGO Female Inlet
CGA 320	Side	Right Hand	0 to 4,000	Side	Right Hand	0 to 250	T-Handle	Brass	PTFE	Stainless Steel	00000000	000000
5/8"-18 UNF Female Outlet × NGO Female Inlet
CGA 320	Side	Right Hand	0 to 4,000	Side	Right Hand	0 to 50	T-Handle	Brass	PTFE	Stainless Steel	00000000	000000
CGA 320	Side	Right Hand	0 to 4,000	Side	Right Hand	0 to 125	T-Handle	Brass	PTFE	Stainless Steel	00000000	000000

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 Argon, Helium, and Nitrogen

Female Outlet × Female Inlet Elbow With T-Handle

Female Outlet × Male Inlet Elbow With T-Handle And Relief Valve

Female Outlet × Male Inlet Elbow With T-Handle

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		Each
NGO Female Inlet × Swagelok® Female Outlet
CGA 677	Side	Left Hand	0 to 7,500	Single	1/4"	Bottom	300 to 4,500	T-Handle	90° Elbow	Brass	PCTFE	0000000	000000000
NGO Male Inlet × Swagelok® Female Outlet
CGA 580	Side	Right Hand	0 to 4,000	Single	1/4"	Bottom	100 to 1,500	T-Handle	90° Elbow	Brass	PCTFE	0000000	000000
CGA 580	Side	Right Hand	0 to 4,000	Single	1/4"	Bottom	200 to 3,000	T-Handle	90° Elbow	Brass	PCTFE	0000000	000000

For Use With Oxygen

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 540	Side	Right Hand	0 to 4,000	Single	1/4"	Side	0 to 1,500	Knob	Straight	Brass	PCTFE	Neoprene	0000000	0000000
CGA 540	Side	Right Hand	0 to 4,000	Single	1/4"	Side	0 to 2,500	Knob	Straight	Brass	PCTFE	Neoprene	0000000	000000

For Use With Air

Female Outlet × Male 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 Male Inlet × Swagelok® Female Outlet
CGA 590	Side	Left Hand	0 to 4,000	Single	1/4"	Side	0 to 1,500	Knob	Straight	Brass	PCTFE	Polyurethane	0000000	0000000
CGA 590	Side	Left Hand	0 to 4,000	Single	1/4"	Side	0 to 2,500	Knob	Straight	Brass	PCTFE	Polyurethane	0000000	000000

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

Tank-Mount Pressure-Regulating
Valves for Moisture Removal

For Use With: Nitrogen
Temperature Range: 32° to 120° F

Designed for nitrogen gas purging in air conditioning, refrigeration, and plumbing systems, these valves automatically reduce a high inlet pressure from to a lower, stable outlet pressure. Use the knob to select the set pressure for testing, purging, or brazing. 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 45° flared tube outlet fittings for a tight seal on metal tubing. They come with a gauge to monitor inlet pressure from the tank. All 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 Number	Location	Thread Direction	Pressure Gauge Range, psi	Stage	For Tube OD	Location	Thread Direction	Pressure Adjustment Method	Purging Flow Range, cfh	Brazing Flow Range, cfh	Testing Pressure Range, psi		Each
NGO Male Inlet × 45° Flared SAE Male Outlet with 7/16"-20 End
Brass Body—PTFE Seal
CGA 580	Side	Right Hand	0 to 3,000	Single	1/4"	Side	Right Hand	Knob	25 to 35	3 to 6	0 to 250	00000000	0000000
CGA 580	Side	Right Hand	0 to 3,000	Single	1/4"	Side	Right Hand	Knob	25 to 35	3 to 6	0 to 500	00000000	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.

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 Knob

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

Male Outlet × Male Inlet Single-Stage Valve With Knob

Male Outlet × Male Inlet Single-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	Knob	Brass/Steel	PTFE	Rubber	0000000	0000000
CGA 300	Side	Right Hand	0 to 400	9/16"-18	Side	Left Hand	0 to 15	T-Handle	Brass	PTFE	Rubber	000000	000000
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
CGA 510	Side	Left Hand	0 to 400	9/16"-18	Side	Left Hand	0 to 15	T-Handle	Brass	PTFE	Rubber	000000	000000
CGA 510	Side	Left Hand	0 to 400	9/16"-18	Side	Left Hand	0 to 15	T-Handle	Brass	PTFE	Stainless Steel	0000000	000000
For Use With Hydrogen
UNF Male Outlet × NGO Female Inlet
CGA 350	Side	Left Hand	0 to 4,000	9/16"-18	Side	Left Hand	0 to 125	T-Handle	Brass	PTFE	Rubber	000000	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	PTFE	Rubber	0000000	000000
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

Male Outlet × Female Inlet Two-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	T-Handle	Brass	PTFE	Stainless Steel	0000000	0000000
CGA 300	Side	Right Hand	0 to 400	9/16"-18	Side	Left Hand	0 to 15	T-Handle	Brass/Steel	PTFE	Rubber	000000	000000
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	PTFE	Stainless Steel	0000000	000000
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 Hydrogen and Methane
UNF Male Outlet × NGO Female Inlet
CGA 350	Side	Left Hand	0 to 4,000	9/16"-18	Side	Left Hand	2 to 40	Knob	Brass	Neoprene	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

Tank-Mount Pressure-Regulating
Valves for Cryogenic Liquids

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

Automatically reduce a high inlet pressure from compressed gas tanks to a lower, stable outlet pressure. These valves 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 Number	Location	Thread Direction	Stage	Thread Size	Location	Thread Direction	Pressure Range, psi	Pressure Adjustment Method		Each
UNF Male Outlet × NGO Female Inlet
Brass Body—Stainless Steel Diaphragm and PTFE Seal
Liquid Carbon Dioxide	CGA 320	Side	Right Hand	Single	9/16"-18	Bottom	Right Hand	0 to 350	T-Handle	0000000	0000000
Liquid Oxygen	CGA 540	Side	Right Hand	Single	9/16"-18	Bottom	Right Hand	0 to 125	T-Handle	0000000	000000
UNF Male Outlet × NGO Male Inlet
Brass Body—Stainless Steel Diaphragm and PTFE Seal
Liquid Argon, Liquid Nitrogen	CGA 580	Side	Right Hand	Single	9/16"-18	Bottom	Right Hand	0 to 125	T-Handle	0000000	000000
Liquid Argon, Liquid Nitrogen	CGA 580	Side	Right Hand	Single	9/16"-18	Bottom	Right Hand	0 to 350	T-Handle	0000000	000000

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About Gas Regulators

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Tank-Mount Pressure-RegulatingValves for Cryogenic Liquids

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

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

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

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

Tank-Mount Pressure-Regulating
Valves for Moisture Removal

Tank-Mount Pressure-Regulating
Valves for Cryogenic Liquids