Helium Flowmeters | McMaster-Carr

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Warning: Products have one, but not necessarily all, of the selected characteristics.

	Inlet CGA Number Inlet CGA Number

CGA 580

CGA 590

CGA 677

	Stage Stage

Single

Two

	Maximum Outlet Pressure Maximum Outlet Pressure

	Maximum Inlet Pressure Maximum Inlet Pressure

3,000 psi

7,500 psi

	Outlet Gender Outlet Gender

Female

Male

	Inlet Gender Inlet Gender

Male

Female

	Outlet Connection Type Outlet Connection Type


Pipe	Tube

	Outlet Pressure Gauge Included Outlet Pressure Gauge Included

Yes

	Outlet Pressure Adjustment Method Outlet Pressure Adjustment Method

Knob

T-Handle

	Maximum Outlet Flow Maximum Outlet Flow

	Maximum Outlet Pressure Gauge Maximum Outlet Pressure Gauge

	Body Material Body Material

Brass

Brass/Steel

	Number of Flowmeters Number of Flowmeters

	Outlet Connection Style Outlet Connection Style

Flared

Threaded

Yor-Lok

	Maximum Inlet Pressure Gauge Maximum Inlet Pressure Gauge

	Minimum Temperature Minimum Temperature

-99° to -25° F

-24° to 0° F

	Maximum Temperature Maximum Temperature

Less than 125° F

125° to 149.9° F

	Inlet Thread Type Inlet Thread Type

National Gas Outlet (NGO)

	Minimum Outlet Pressure Minimum Outlet Pressure

	Inlet Pressure Gauge Included Inlet Pressure Gauge Included

Yes

	Inlet Thread Size Inlet Thread Size

1.030"-14

.960"-14

.965"-14

	Inlet Thread Direction Inlet Thread Direction

Right Hand

Left Hand

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25 Products

About Gas Regulators

Male Inlet × Female Outlet With One Flowmeter

Male Inlet × Female Outlet With Two Flowmeters

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 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 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

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

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

Two-Stage Valves

Female 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

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

Terms and Conditions and Privacy Policy

About Gas Regulators

Easy-Read Tank-Mount Pressure-RegulatingValves with Flowmeter for Inert Gas

Tank-Mount Pressure-RegulatingValves for Air and Inert Gas

Tank-Mount High-Pressure-RegulatingValves for Air and Inert Gas

Easy-Read 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