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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