MSS SP-67-2002a
- Butterfly Valves
- standard by Manufacturers Standardization Society, 07/19/2004
- Category: MSS
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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.
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.
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