Forged steel cryogenic valves have two kinds of valve cover design form. The first bolt valve cover, this form of valve body and bonnet with bolt and nut connection, spiral wound gasket (316 folders flexible graphite manufacturing) Seal. Customers with special requirements can be applied to metal ring connection. The form of the second design is the welded bonnet valves of this design form, the body and bonnet with threaded connection, all-welded seal. Customers with special requirements can be all-welded Wei connection. Sluice valve, globe valve, ball valve can be designed as a low-temperature valve. To be able to use the low temperature of -196 ° C (320oF), the general design of the valve into a lengthened bonnet.
The low temperature cut-off valve design the structure and characteristics:
Low temperature cut-off valve in accordance with API602, MSS-SP-118 and BS6364. Tested according to API598, and marking is per MSS-SP-25.
The following structure
Full bore or reduced bore
Pressure self-centering plate nested
Bolt connection wound gasket seal valve cover and the threaded connection and seal welded valves cover
Integral sealing seat
Seat with a pressure balance hole (for gate, globe)
Socket side to comply with ASME B16.11 Socketweld ends to ASME B16.11
The threaded end of the (NPT), ANSI / AMME B1.20.1
Demand for a particular extend the length of the
Customer requirements of the soft seal globe valve
PTFE packing PTFE customer requirements
Special customer requirements and low temperature testing
Out lever bracket type (OS & Y)
