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About This Item
Full Description
This Standard Practice covers dimensions, design, testing, and marking requirements for butterfly valves. Further reference should be made to the MSS SP-68.
This Standard Practice covers two types of butterfly valves:
—Type I – Valves for tight shut-off (Tested per Section 10.2.1)
—Type II – Valves permitting seat leakage (See Section 10.2.2)
This Standard Practice covers flangeless (wafer-type), single-flange (lug-type), and flanged-end valves in size NPS 1? through NPS 72, along with grooved-end valves, and shouldered-end valves, with pressure ratings in accordance with the requirements of Sections 3 and 4.
Document History
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MSS SP-67-2022
Butterfly Valves- Most Recent
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MSS SP-67-2017
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Butterfly Valves, Includes Errata (2017)- Historical Version
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MSS SP-67-2011
Butterfly Valves- Historical Version
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MSS SP-67-2002a
Butterfly Valves- Historical Version
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MSS SP-67-2002
Butterfly Valves- Historical Version
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MSS SP-67-1995
Butterfly Valves- Historical Version