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About This Item
Full Description
This Standard Practice covers the construction requirements for wafer- and flange-type knife gate valves made from ASME Code materials and meeting the applicable gate valve requirements of ASME B16.34.
INFORMATIONAL NOTE: ASME B16.34 Special Class and Limited Class are outside the scope of this Standard Practice.
This Standard Practice covers flanged body designs compatible with ASME B16.5 flanges for NPS 2 (DN 50) through NPS 24 (DN 600) and ASME B16.47 Series A flanges for NPS 26 (DN 650) through NPS 48 (DN 1200).
As an alternative to Section 1.1, this Standard Practice also covers valves that do not meet the body wall thickness of ASME B16.34 but shall be qualified by analysis per Boiler and Pressure Vessel Code (BPVC), Section VIII, Division 2, Part 5 or by a proof test per BPVC, Section, VIII, Division 1, UG-101.
The Class 150, 300, and 600 dimensional, material, and other requirements of this Standard Practice, shall apply to these valves.
Document History
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MSS SP-135-2021
viewing
High Pressure Knife Gate Valves, Includes Errata (2022)- Most Recent
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MSS SP-135-2016
High Pressure Steel Knife Gate Valves- Historical Version
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MSS SP-135-2010
High Pressure Steel Knife Gate Valves- Historical Version
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MSS SP-135-2006
High Pressure Steel Knife Gate Valves- Historical Version