About Flow-Adjustment Valves
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About Pressure-Relief Valves
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Threaded Flow-Adjustment Valves for Cryogenic Liquid
- Valve Type: Globe
- For Use With: Liquid Argon, Liquid Carbon Dioxide, Liquid Nitrogen
- Seal Material: Glass-Filled PTFE Plastic
- Specifications Met: CGA G-4.1
Designed to withstand the extreme cold of liquid argon, liquid carbon dioxide, and liquid nitrogen, these valves are cleaned and bagged to meet CGA G-4.1 standards for oxygen service. They gradually open and close with multiple turns of the wheel handle to adjust and regulate flow. All have a rising stem that lifts as the valve opens and lowers as the valve closes to provide a visual indication of whether flow is on or off.
Flow coefficient (Cv) is the amount of water (in gallons per minute) at 60° F that will flow through a fully open valve with a difference of 1 psi between the inlet and the outlet.
For technical drawings and 3-D models, click on a part number.
Pipe Size | Flow Coefficient (Cv) | Max. Pressure | Temperature Range, °F | End-to-End Lg. | Overall Ht. | Stem Type | Each | |
Bronze Body | ||||||||
|---|---|---|---|---|---|---|---|---|
NPT Female × NPT Female | ||||||||
| 1/2 | 3.3 | 600 psi @ 150° F | -325° to 150° | 2 5/8" | 8 5/16" | Rising | 00000000 | 0000000 |
| 3/4 | 6.3 | 400 psi @ 150° F | -325° to 150° | 3 3/16" | 10" | Rising | 00000000 | 000000 |
| 1 | 10 | 600 psi @ 150° F | -325° to 150° | 3 3/4" | 11 13/16" | Rising | 00000000 | 000000 |
| 1 1/2 | 26 | 400 psi @ 150° F | -325° to 150° | 4 3/4" | 16 1/2" | Rising | 00000000 | 000000 |
| 2 | 45 | 600 psi @ 150° F | -325° to 150° | 5 3/4" | 16 3/4" | Rising | 00000000 | 00000000 |
Stainless Steel Body | ||||||||
NPT Female × NPT Female | ||||||||
| 1/2 | 5 | 720 psi @ 150° F | -325° to 150° | 3 1/16" | 11 13/16" | Rising | 00000000 | 000000 |
| 1 | 14 | 720 psi @ 150° F | -325° to 150° | 3 15/16" | 12 1/16" | Rising | 00000000 | 000000 |
| 1 1/2 | 53 | 720 psi @ 150° F | -325° to 150° | 5" | 12 5/16" | Rising | 00000000 | 000000 |
| 2 | 28.3 | 720 psi @ 150° F | -325° to 150° | 5 15/16" | 12 5/8" | Rising | 00000000 | 000000 |
Compact Threaded Flow-Adjustment Valves for Cryogenic Liquid
- Valve Type: Globe
- For Use With: Liquid Argon, Liquid Carbon Dioxide, Liquid Nitrogen
- Specifications Met: CGA G-4.1
Often used with portable cryogenic cylinders, these valves are a third of the height of other valves for cryogenic liquid. They are designed to withstand the extreme cold of liquid argon, liquid carbon dioxide, and liquid nitrogen; all are cleaned and bagged to meet CGA G-4.1 standards for oxygen service. These valves gradually open and close with multiple turns of the wheel handle to adjust and regulate flow. They have a nonrising stem that stays in the same position whether the valve is open or closed.
Flow coefficient (Cv) is the amount of water (in gallons per minute) at 60° F that will flow through a fully open valve with a difference of 1 psi between the inlet and the outlet.
For technical drawings and 3-D models, click on a part number.
| Pipe Size | Flow Coefficient (Cv) | Max. Pressure | Temperature Range, °F | End-to-End Lg. | Stem Type | Each | |
Brass Body | |||||||
|---|---|---|---|---|---|---|---|
NPT Female × NPT Female | |||||||
| 1/4 | 1 | 600 psi @ 165° F | -320° to 165° | 2 1/2" | Nonrising | 00000000 | 0000000 |
| 3/8 | 1.8 | 600 psi @ 165° F | -320° to 165° | 2 1/2" | Nonrising | 00000000 | 000000 |
| 1/2 | 1.8 | 600 psi @ 165° F | -320° to 165° | 2 1/2" | Nonrising | 00000000 | 000000 |
Pressure-Relief Valves for Cryogenic Applications
- For Use With: Liquid Carbon Dioxide, Liquid Nitrogen, Liquid Oxygen
- Temperature Range: -320° to 165° F
Cleaned and bagged to meet CGA G-4.1 for oxygen service and other high-purity applications, these valves are built to withstand the extreme cold of liquid carbon dioxide, liquid nitrogen, and liquid oxygen. They begin opening at the set pressure and fully open at about 10% over the set pressure. Valves begin closing as pressure drops and fully close when the system pressure is restored below the set pressure. Set pressure is not adjustable.
Valves are not intended for direct contact with cryogenic liquids. Risers (sold separately) are required to convert cryogenic liquids into gases before they contact the valve. 3/8 NPT valve requires a 1/2 NPT × 3/8 NPT bushing when using a riser.
Adapters (sold separately) convert the valve relief-port connection from UNEF female threads to NPT female threads.
For technical drawings and 3-D models, click on a part number.
Valves | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Inlet | Relief Port | Risers | Adapters | |||||||||
| Pipe Size | Location | Maximum Pressure, psi | Thread Size | Location | Overall Ht. | Choose a Set Pressure, psi | Each | Each | Each | |||
NPT Male Inlet and UNEF Female Relief Port | ||||||||||||
Brass Body | ||||||||||||
| 1/4 | Bottom | 600 | 3/4"-20 | Top | 2 5/8" | 00000000 | 000000 | 00000000 | 000000 | 00000000 | 000000 | |
| 3/8 | Bottom | 600 | 3/4"-20 | Top | 2 5/8" | 00000000 | 00000 | 00000000 | 00000 | 00000000 | 00000 | |
| 1/2 | Bottom | 600 | 3/4"-20 | Top | 2 13/16" | 00000000 | 00000 | 00000000 | 00000 | 00000000 | 00000 | |
Cleaned and Bagged Pressure-Regulating Valves for Air and Inert Gas
- For Use With: Nitrogen, Oxygen, Argon, Helium, Neon
- Temperature Range: -40° to 165° F
Often used for oxygen service and other high-purity applications, these valves are cleaned and bagged to meet CGA G-4.1 standards to prevent contamination. They automatically reduce a high, variable inlet pressure to a lower, stable outlet pressure. Adjust the outlet pressure within the range. Valves have two gauge ports. They are no-bleed style, so they keep process gases contained in the valve.
For technical drawings and 3-D models, click on a part number.
Inlet | Outlet | Gauge Port | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Pipe Size | Location | Max. Pressure, psi | Pipe Size | Location | Pipe Size | Location | End-to-End Lg. | Choose an Outlet Pressure Range, psi | Each | |
NPT Female | ||||||||||
Brass Body—Buna-N Diaphragm and Fluoroelastomer Seal | ||||||||||
| 1/2 | Side | 500 | 1/2 | Side | 1/4 | Side | 2 13/16" | 00000000 | 0000000 | |
| 3/4 | Side | 500 | 3/4 | Side | 1/4 | Side | 3 5/16" | 00000000 | 000000 | |
| 1 | Side | 500 | 1 | Side | 1/4 | Side | 3 5/16" | 00000000 | 000000 | |
Compressed Gas Fill Valves
Mount these valves onto compressed gas tanks. Also known as Schrader valves—which are typically used with compressed air—they have an internal spring that holds the valve shut when you depress the pin to add, remove, or check the pressure of compressed gas. Made of brass, these valves thread onto nuts more easily than valves made of harder metal. They also have good corrosion resistance. Valves have a thread cap to protect the stem from accidental gas release.
Valves for use with butane are commonly used on torches. They’re nickel plated for extra corrosion resistance.
Valves for use with nitrogen are often used in central heating systems.
For technical drawings and 3-D models, click on a part number.
Inlet | Outlet | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| For Use With | Thread Size | Thread Pitch, mm | Thread Size | Connection Length | Maximum Pressure, psi | Temperature Range, °F | Overall Length, mm | Hex Size, mm | Material | Each | |
Metric Male Threaded Pipe Inlet × Schrader Male Threaded Hose Outlet | |||||||||||
| Butane, Compressed Gas | M8 | 1 | 0.305"-32 | 7/16" | 425 | -40° to 225° | 23 | 12 | Nickel-Plated Brass | 0000000 | 00000 |
| Nitrogen, Compressed Gas | M10 | 1 | 0.305"-32 | 3/8" | 200 | -40° to 225° | 20 | 12 | Brass | 0000000 | 00000 |