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About Air Preparation
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About Gas Regulators
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Clean Room Panel-Mount Pressure-Regulating
Valves for Air and Inert Gas
- For Use With:
Relieving: Air, Nitrogen
Nonrelieving: Air, Argon, Carbon Dioxide, Nitrogen - Temperature Range: 32° to 140° F
Maintain contaminant-free standards in clean room environments. These valves come cleaned and bagged to Class 100 clean room standards and have a 316 stainless steel body with a smooth finish to resist dust collection. They automatically reduce a high, variable inlet pressure to a lower, stable output pressure. Valves have threads below the adjustment knob and come with a panel-mount nut. Adjust the outlet pressure within the range.
Gauge ports let you attach a pressure gauge.
Nonrelieving valves do not exhaust excess downstream pressure.
For technical drawings and 3-D models, click on a part number.
Regulators | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Inlet | Outlet | Gauge Port | Mounting Brackets | |||||||||||
| Pipe Size | Location | Max. Pressure, psi | Pipe Size | Location | Pressure Range, psi | Pipe Size | Location | End-to-End Lg. | Panel Cutout Dia. | Environmental Rating | Each | Each | ||
NPT Female | ||||||||||||||
316 Stainless Steel Body—Fluoroelastomer Diaphragm and Seal | ||||||||||||||
| 1/8 | Side | 145 | 1/8 | Side | 7 to 102 | 1/4 | Side | 1.700" | 1.2" | Class 100 (Fed. Std.), Class 5 (ISO) | 0000000 | 0000000 | 0000000 | 00000 |
| 1/4 | Side | 145 | 1/4 | Side | 7 to 102 | 1/4 | Side | 1.700" | 1.2" | Class 100 (Fed. Std.), Class 5 (ISO) | 0000000 | 000000 | 0000000 | 0000 |
| 1/4 | Side | 145 | 1/4 | Side | 7 to 102 | 1/4 | Side | 2.280" | 1.44" | Class 100 (Fed. Std.), Class 5 (ISO) | 0000000 | 000000 | 0000000 | 00000 |
| 3/8 | Side | 145 | 3/8 | Side | 7 to 102 | 1/4 | Side | 2.280" | 1.44" | Class 100 (Fed. Std.), Class 5 (ISO) | 0000000 | 000000 | 0000000 | 00000 |
| 1/2 | Side | 145 | 1/2 | Side | 7 to 102 | 1/4 | Side | 2.280" | 1.44" | Class 100 (Fed. Std.), Class 5 (ISO) | 0000000 | 000000 | 0000000 | 00000 |
| Pressure Gauge | 0000000 | Each | 000000 |
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.
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 |
Easy-Read Tank-Mount Pressure-Regulating
Valves with Flowmeter for Inert Gas
- 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.
Valves with one flowmeter are for one piece of equipment on a tank. The flowmeter has a single 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 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 |
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.
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 | Location | Thread Direction | Pressure Range, psi | Pressure Adjustment Method | Body | Seal | Diaphragm | Each | |
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 | 0000000 |
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 |
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 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 | 0000000 |
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 |
High-Purity Tank-Mount
Pressure-Regulating Valves for Inert Gas
- For Use With: See Table
- Temperature Range: -20° to 120° F
Reduce contaminants in research sample systems, emission monitoring systems, chromatography, and other high-purity applications that use argon, helium, nitrogen, or carbon dioxide. These valves have a 316 stainless steel and brass body with a smooth finish to reduce dust collection and internal components designed to protect the seal and diaphragm from contamination. 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.
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.
Chrome-plated valves add a layer of corrosion resistance.
Inlet | Outlet | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| CGA Number | Location | Thread Direction | Pressure Gauge Range, psi | Stage | For Tube OD | Location | Pressure Range, psi | Pressure Adjustment Method | Each | |
Swagelok® Female Outlet × NGO Female Inlet | ||||||||||
Brass Body—316 Stainless Steel Diaphragm and PTFE Seal | ||||||||||
| CGA 320 | Side | Right Hand | 0 to 4,000 | Two | 1/4" | Side | 0 to 125 | Knob | 0000000 | 0000000 |
Chrome-Plated Brass Body—316 Stainless Steel Diaphragm and PTFE Seal | ||||||||||
| CGA 320 | Side | Right Hand | 0 to 4,000 | Single | 1/4" | Side | 0 to 15 | Knob | 0000000 | 000000 |
| CGA 320 | Side | Right Hand | 0 to 4,000 | Single | 1/4" | Side | 0 to 50 | Knob | 0000000 | 000000 |
| CGA 320 | Side | Right Hand | 0 to 4,000 | Single | 1/4" | Side | 0 to 125 | Knob | 0000000 | 000000 |
| CGA 320 | Side | Right Hand | 0 to 4,000 | Two | 1/4" | Side | 0 to 15 | Knob | 0000000 | 000000 |
| CGA 320 | Side | Right Hand | 0 to 4,000 | Two | 1/4" | Side | 0 to 50 | Knob | 0000000 | 000000 |
| CGA 320 | Side | Right Hand | 0 to 4,000 | Two | 1/4" | Side | 0 to 125 | Knob | 0000000 | 000000 |
Vacuum-Regulating Valves for Air and Inert Gas
- For Use With: Air, Carbon Dioxide, Nitrogen
- Temperature Range: -20° to 180° F
Throttle a high vacuum source to maintain a lower vacuum level in your system. Adjust the outlet vacuum level within the range. All valves have a gauge port.
For technical drawings and 3-D models, click on a part number.