low temperature valve valve knowledge
what kind of valve is called cryogenic valve?
low temperature valve a control unit in a low temperature fluid delivery system that has the functions of diversion, interception, regulation, throttling, preventing backflow, shunt or overflow pressure relief. applicable to the medium temperature of -40℃ to -196℃ valves are collectively referred to as low temperature valves.
low temperature valve implementation standards:
low temperature valve design implementation standards: api6d, jb/t7749
low temperature valve inspection and test execution standard: jb/t7749
low temperature valve material selection:
1. valve body and cover: lcb(-46℃), lc3(-101℃), cf8 (304) (-196℃)
2. gate: stainless steel hardfacing cobalt - based hard alloy
3. seat: stainless steel surfacing cobalt - based hard alloy
4. stem: 0 cr18ni9
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