The functioning of a control and shut-off valve becomes very demanding if the temperature drops to the range of absolute zero. In these extremely cold temperature ranges, each valve must be designed and optimised according to the application and fluid.
A cryogenic valve is one of the few elements which connect the cold pipeline with the liquid gas to the environment at ambient temperature. This may result in a temperature difference of up to 300°C between the pipeline and the environment.
This temperature difference generates a heat flow from the warm to the cold area, which reduces the efficiency of a system and impairs the proper functioning of the valve under extreme circumstances if ice is formed at the warm end.
The challenge is to reduce the thermal resistance between the warm and the cold area, i.e. between the valve bonnet and the valve connections, as far as possible. cryogenic valves are characterized by a very low thermal resistance and thus contribute to a system’s efficiency.
| Size range | ¼”-8″ (DN8-DN200) |
| Pressure range | Vacuum 10-6 Tor to 414 bar (6000psi) |
| Temperature range | -269 °C to +200 °C (-452 °F to +392 °F) |
| Materials | Stainless steel A351 CF8M/CF3M, A479-316/316L, monel 400 and more |
| End connection | Threaded, welded, flanged |
| Operation | Lever or gear operated, pneumatic or electric actuated |
| Service | LNG terminals, air separation plants, LNG transportation, steel production, food & beverage, research labs |
Three piece
C47W/C47C Series
Size range:
1⁄4”- 6” (DN8-DN150)
Pressure range:
Class 600 / 300
C26W/C26C Series
Size range:
2”- 8” (DN50-DN200)
Pressure range:
Class 600
Flanged
C31W/C31C Series
Size range:
1/2”- 8” (DN15-DN200)
Pressure range:
ANSI Class 150
C32W/C32C Series
Size range:
1/2”- 8” (DN15-DN200)
Pressure range:
ANSI Class 300
C73W/C73C Series
Size range:
1/2”- 8” (DN15-DN200)
Pressure range:
ANSI Class 150
C78W/C78C Series
Size range:
1/2”- 2” (DN15-DN50)
Pressure range:DIN PN40
C74W/C74C Series
Size range:
1/2”- 8” (DN15-DN200)
Pressure range:
ANSI Class 300
C77W/C77C Series
Size range:
3” – 6” (DN80-DN150
Pressure range:DIN PN16
High Pressure
C28W/C28C Series
Size range:
1/4” – 8” (DN8-DN200
Pressure range:
ANSI Class 2500
Multi Port / Diverter
C61W/C61C Series
Size range:
1/2” – 4” (DN15-DN100)
Pressure range:
ANSI Class 600
DC47W Series
Size range:
1/2” – 2” (DN15-DN50)
Pressure range:
ANSI Class 600
