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About This Item


Full Description


1.1 This Standard Practice covers requirements for material, design, dimensions, fabrication, non-destructive examination and pressure testing of stainless steel and other alloy cryogenic service valves with body/bonnet extensions. Requirements for check valves for cryogenic service, which may not require body/bonnet extensions, are also covered. This Standard Practice applies to cryogenic gate, globe, butterfly, ball and check valves and may be used in conjunction with other valve-specific standards including the following identified in this Standard Practice as a parent standard:

ASME B16.34, Valves-Flanged, Threaded, and Welded End.
API 600, Steel Gate Valves-Flanged and Buttwelding Ends, Bolted Bonnets.
API 602, Steel Gate, Globe, and Check Valves for Sizes NPS 4 (DN 100) and Smaller for the Petroleum and Natural Gas Industries.
API 603, Corrosion-resistant, Bolted Bonnet Gate Valves-Flanged and Butt-Welding Ends.
API 608, Metal Ball Valves-Flanged, Threaded and Welding End.
API 609, Butterfly Valves: Double Flanged, Lug- and Wafer-type.
API 6D/ISO 14313, Specification for Pipeline Valves.

1.2 The requirements in this Standard Practice are not intended to supersede or replace requirements of a parent valve standard.

1.3 This Standard Practice includes additional construction detail requirements specifically related to valves, including body/bonnet extensions essential for cryogenic applications.

Document History

  1. MSS SP-134-2012

    Valves for Cryogenic Service; Including Requirements for Body/Bonnet Extensions

    • Most Recent
  2. MSS SP-134-2010


    Valves for Cryogenic Service Including Requirements for Body/Bonnet Extensions

    • Historical Version
  3. MSS SP-134-2006a

    Valves for Cryogenic Service Including Requirements for Body/Bonnet Extensions

    • Historical Version