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About This Item

 

Full Description

This document is a reissue of SP-67-2002.

1. SCOPE

1.1 This Standard Practice covers dimensions, design, testing, and marking requirements for butterfly valves. Further reference should be made to MSS SP-68.

1.2 This Standard Practice covers two types fo butterfly valves:

Type I - Valves for tight shut-off (tested per subsection 10.2.1)

Type II - Valves permitting seat leakage (see subsection 10.2.2)

1.3 This Standard Practice covers flangeless (wafer-type), single flange (lug-type), and flanged end valves in sizes 1½ NPS through 72 NPS, grooved end valves, and shouldered end valves with pressure ratings in accordance with the requirements of Sections 3 and 4.
 

Document History

  1. MSS SP-67-2017


    Butterfly Valves, Includes Errata (2017)

    • Most Recent
  2. MSS SP-67-2011


    Butterfly Valves

    • Historical Version
  3. MSS SP-67-2002a

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    viewing


    Butterfly Valves

    • Historical Version
  4. MSS SP-67-2002


    Butterfly Valves

    • Historical Version
  5. MSS SP-67-1995


    Butterfly Valves

    • Historical Version