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