Trust forged steel cryogenic gate valve are available in two bonnet designs. The first design is the Bolted Bonnet, with male-female joint, spiral wound gasket, made in F304/graphite. Ring joint gasket are also available on request. The second design is the welded bonnet with a threaded and seal welded joint. On request a full penetration strength welded joint is available.
The cryogenic valves are available in gate and globe design configurations. Valves are designed with an extended bonnet for use in cold services to 196 degrees C (-320 degree F).
Cryogenic gate valve conform to API602, MSS-SP-118 and BS6364, tested according to API698, and marking is per MSS SP-25.
Construction is as follows:
Full port or conventional port
Two piece self-aligning packing gland
Bolted bonnet with spiral-wound gasket or threaded and seal welded bonnet
Pressure relief hole on seat
Socket weld ends to SASME B16.11
Special extension lengths on request
Stem packing on request
Special low temperature testing on request
Outside screw and yoke
Dimensions and Weight