MSS SP-134-2012
This Standard Practice coversrequirements for material, design, dimensions,fabrication, non-destructive examination andpressure testing of stainless steel and otheralloy cryogenic service valves withbody/bonnet extensions. Requirements forcheck valves for cryogenic service, which maynot require body/bonnet extensions, are alsocovered. This Standard Practice applies tocryogenic gate, globe, butterfly, ball, andcheck valves, and may be used in conjunctionwith other valve-specific standards