This standard specifies the structural type, technical requirements, inspection and test methods, inspection rules, marking, protection, packaging, storage and transportation of steel butterfly valves for liquefied natural gas. This standard applies to butterfly valves for liquefied natural gas (hereinafter referred to as butterfly valves) with nominal sizes DN80~DN1200, nominal pressures PN16~PN100, nominal sizes NPS3~NPS48, and pressure classes Class150~Class600. Other low-temperature butterfly valves with temperatures higher than -162°C can also be used as a reference.
JB/T 12623-2016 Referenced Document
GB 26640 Specification for minimal thickness of the shell of valves