JB/T 12626-2016 (English Version) PDF

Scope: This standard specifies the structural type, technical requirements, inspection and test methods, inspection rules, marking, protection, packaging, storage and transportation of gate valves for liquefied natural gas. This standard is applicable to flanges and welded gate valves (hereinafter referred to as gate valves) with nominal pressures PN16~PN250, nominal sizes DN25~DN600, pressure classes Class150~Class1 500, nominal sizes NPS1~NPS24, and working media of liquid natural gas. Other low-temperature gate valves with temperatures higher than -162°C can also be used as a reference.

JB/T 12626-2016 Referenced Document

GB 26640 Specification for minimal thickness of the shell of valves
GB/T 12220 Industrial valves.Marking
GB/T 12221 Metal valves-Face to face,end to end,center to face and center to end dimensions
GB/T 12224 General requirements for industrial steel valves
GB/T 12234 Bolted bonnet steel gate valves for petroleum and natural gas industries*， 2019-10-18 Update
GB/T 26480 Valve inspection and testing
GB/T 26481 Industrial valves test for fugitive emissions*， 2022-12-30 Update
GB/T 9113 Integral steel pipe flanges
JB/T 12621-2016 Liquified natural gas valves.Technical requirements
JB/T 12622 Liquified natural gas valves.Performance testing
JB/T 7248 Technical specification for low temperature service steel casting for valves
JB/T 7927-2014 Valve cast steel visual quality requirements
JB/T 7928 Industrial valves.Delivery specification
NB/T 47014 Welding procedure qualification for pressure equipment