Cryogenic valves

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

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