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ASTM F1098-87(2010)
M00010133
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ASTM F1098-87(2010) Standard Specification for Envelope Dimensions for Butterfly Valves-NPS 2 to 24
standard by ASTM International, 03/01/2010
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1.1 This specification provides standard dimensions for manual (lever and gear actuator) butterfly valves installed in shipboard piping systems in NPS 2 to NPS 24, inclusive.
1.2 This specification covers conventional and ANSI B16.34 class butterfly valves of both lug and wafer types.
1.3 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.