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About This Item


Full Description


1.1 This Standard Practice establishes requirements for ductile iron swing check valves with flanged, threaded, mechanical-joint, and push-on ends for general purpose. This Standard Practice covers check valves for installation in pipelines that are horizontal or in pipelines where flow is above horizontal up to vertical with flow upward.

1.2 This Standard Practice describes ductile iron check valves in two categories:

1.2.1 Class rated valves, assigned a pressure and temperature rating as prescribed in an appropriate ASME standard.

1.2.2 Valves limited to Cold Working Pressure (CWP) which are only limited to water service.

1.3 This Standard Practice also includes, directly or by reference, requirements for chemical and physical properties of materials and pressure tests.

Document History

  1. MSS SP-136-2014


    Ductile Iron Swing Check Valves, Includes Amentment (October 2017)

    • Most Recent
  2. MSS SP-136-2007

    Ductile Iron Swing Check Valves

    • Historical Version

Amendments, rulings, supplements, and errata

  1. MSS SP-136-2014 Amendment

    Amendment for SP-136-2014 MSS Ductile Iron Swing Check Valves