About On/Off Valves
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Threaded On/Off Valves for Cryogenic Liquids
- Valve Type: Ball
- For Use With: Liquid Argon, Liquid Carbon Dioxide, Liquid Nitrogen
- Seal Material: Graphite
- Specifications Met: American Petroleum Institute Standard 607 - Edition 7
Use these valves in cryogenic systems to control the flow of liquid nitrogen, carbon dioxide, and argon. They have PCTFE seats that maintain a tight seal at temperatures as low as -400° F. A vented ball relieves pressure build-up from frequent temperature fluctuations during use. These valves have an extra-long stem filled with graphite packing to prevent heat transfer and leaks. The stem is long enough to fit through thick insulation in your setup. It keeps the handle at a comfortable temperature and your hands away from hazards, so you can start and stop flow in hard-to-reach areas. Their lockable handle can be fixed in place using a padlock (not included). To maintain performance and safety, these valves are shipped cleaned and bagged to avoid contamination. All are full port, so they do not restrict flow.
Fire-tested to meet American Petroleum Institute (API) 607, these valves securely isolate flammable gases such as methane and hydrogen to prevent the spread of fire.
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 | Min. Temp., °F | End-to-End Lg. | For Insulation Thick. | For Max. Shackle Dia. | Features | Each | |
316 Stainless Steel Body with Lever Handle | |||||||||
|---|---|---|---|---|---|---|---|---|---|
NPT Female × NPT Female | |||||||||
| 1/4 | 8 | 1,440 psi @ 100° F | -400° | 2 15/16" | 10 11/16" | 5/16" | Vented Ball | 0000000 | 0000000 |
| 1/2 | 12 | 1,440 psi @ 100° F | -400° | 3 1/16" | 10 3/4" | 5/16" | Vented Ball | 0000000 | 000000 |
| 3/4 | 32 | 1,440 psi @ 100° F | -400° | 3 3/4" | 10 7/8" | 5/16" | Vented Ball | 0000000 | 00000000 |
| 1 | 46 | 1,440 psi @ 100° F | -400° | 4 1/4" | 10 13/16" | 5/16" | Vented Ball | 0000000 | 00000000 |
316 Stainless Steel Body with T-Handle | |||||||||
NPT Female × NPT Female | |||||||||
| 2 | 240 | 1,440 psi @ 100° F | -400° | 6 3/8" | 11 7/8" | 3/8" | Vented Ball | 0000000 | 00000000 |
Socket-Connect On/Off Valves for Cryogenic Liquids
- Valve Type: Ball
- For Use With: Liquid Argon, Liquid Carbon Dioxide, Liquid Nitrogen
- Seal Material: Graphite
- Specifications Met: American Petroleum Institute Standard 607 - Edition 7
Designed to withstand extremely cold liquid gases, these valves are ideal for liquid nitrogen cooling systems and liquified gas storage. They have PCTFE seats that maintain a tight seal at temperatures as low as -400° F. A vented ball relieves internal gas and pressure build-up from frequent temperature fluctuations during use. These valves have an insulated, extra-long stem to prevent heat transfer and leaks. The extended stem keeps the handle at a comfortable temperature and your hands away from hazards, so you can start and stop flow even in hard-to-reach areas. To maintain performance and safety, these valves are shipped cleaned and bagged to avoid contamination.
Insert unthreaded pipe into the socket ends and weld to create a permanent, leak-tight connection. All are full port, so they do not restrict flow. To prevent changes, add a padlock to fix the handle in place.
Fire-tested to meet American Petroleum Institute (API) 607, these valves securely isolate flammable substances to prevent the spread of fire.
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 | For Pipe Schedule | Flow Coefficient (Cv) | Max. Pressure | Min. Temperature, °F | End-to-End Lg. | For Insulation Thick. | For Max. Shackle Dia. | Features | Each | |
316 Stainless Steel Body | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Socket Connect × Socket Connect | ||||||||||
| 3/4 | Any | 32 | 1440 psi @ 100° F | -400° | 3 3/4" | 10 7/8" | 5/16" | Vented Ball | 0000000 | 000000000 |
| 1 | Any | 46 | 1440 psi @ 100° F | -400° | 4 1/4" | 10 13/16" | 5/16" | Vented Ball | 0000000 | 00000000 |
| 2 | Any | 240 | 1440 psi @ 100° F | -400° | 6 5/16" | 11 7/8" | 3/8" | Vented Ball | 0000000 | 00000000 |