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MSS - SP-81

Stainless-Steel or Stainless-Steel-Lined, Bonnetless, Knife Gate Valves with Flanged Ends

active, Most Current
Organization: MSS
Publication Date: 1 January 2021
Status: active
Page Count: 15
scope:

SCOPE AND FIELD OF APPLICATION

This Standard Practice covers all stainless-steel or stainless-steel-lined, cast, or fabricated bonnetless, knife gate valves with flanged ends from size NPS 2 (DN 50) through NPS 36 (DN 900).

The valves identified in this Standard Practice are intended for use in applications where shock loadings are not encountered. Applications at conditions other than those specified in Section 3 require special design considerations.

Document History

SP-81
January 1, 2021
Stainless-Steel or Stainless-Steel-Lined, Bonnetless, Knife Gate Valves with Flanged Ends
SCOPE AND FIELD OF APPLICATION This Standard Practice covers all stainless-steel or stainless-steel-lined, cast, or fabricated bonnetless, knife gate valves with flanged ends from size NPS 2 (DN 50)...
SP-81
January 1, 2021
Stainless-Steel or Stainless-Steel-Lined, Bonnetless, Knife Gate Valves with Flanged Ends
A description is not available for this item.
MSS SP 81
January 1, 2017
Stainless-Steel or Stainless-Steel-Lined, Bonnetless, Knife Gate Valves with Flanged Ends
SCOPE AND FIELD OF APPLICATION  This Standard Practice covers all stainless-steel or stainless-steel-lined, cast, or fabricated bonnetless, knife gate valves with flanged ends from size NPS 2 (DN...
MSS SP 81
January 1, 2013
Stainless-Steel or Stainless-Steel-Lined, Bonnetless, Knife Gate Valves with Flanged Ends
This Standard Practice covers all stainless-steel or stainless-steel-lined, cast, or fabricated bonnetless, knife gate valves with flanged ends from size NPS 2 (DN 50) through NPS 36 (DN 900). The...
MSS SP 81
January 1, 2006
Stainless Steel, Bonnetless, Flanged Knife Gate Valves
This Standard Practice covers all stainless steel or stainless steel lined, cast or fabricated bonnetless, flanged knife gate valves in NPS 2 (DN 50) through NPS 36 (DN 900). The valves in this...
MSS SP 81
January 1, 2006
Stainless Steel, Bonnetless, Flanged Knife Gate Valves
This Standard Practice covers all stainless steel or stainless steel lined, cast or fabricated bonnetless, flanged knife gate valves in NPS 2 (DN 50) through NPS 36 (DN 900). The valves in this...
MSS SP 81
January 1, 2001
Stainless Steel, Bonnetless, Flanged Knife Gate Valves
This standard covers all stainless steel or stainless steel lined, cast or fabricated bonnetless, flanged knife gate valves in sizes NPS 2 (DN 50) through NPS 36 (DN 900). The valves in this standard...
MSS SP 81
January 1, 2000
Stainless Steel, Bonnetless, Flanged Knife Gate Valves
SCOPE AND FIELD OF APPLICATION This standard covers all stainless steel or stainless steel lined, cast or fabricated bonnetless, flanged knife gate valves in sizes NPS 2 (DN 50) through NPS 36 (DN...
MSS SP 81
January 1, 1995
Stainless Steel, Bonnetless, Flanged Knife Gate Valves
A description is not available for this item.
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References

This document references:
ASME B16.47 - Large Diameter Steel Flanges NPS 26 Through NPS 60 Metric/Inch Standard
Published by ASME on January 1, 2020
This Standard covers pressure–temperature ratings, materials, dimensions, tolerances, marking, and testing for pipe flanges in sizes NPS 26 through NPS 60. Included are flanges with rating class...
This document references:
ASME B16.5 - Pipe Flanges and Flanged Fittings NPS ½ Through NPS 24 Metric/Inch Standard
Published by ASME on January 1, 2020
(a) This Standard covers pressure–temperature ratings, materials, dimensions, tolerances, marking, testing, and methods of designating openings for pipe flanges and flanged fittings. Included are (1)...
This document references:
ASME BPVC-IX - SECTION IX QUALIFICATION STANDARD FOR WELDING, BRAZING, AND FUZING PROCEDURES; WELDERS; BRAZERS; AND WELDING, BRAZING, AND FUSING OPERATORS - WELDING, BRAZING AND FUSING QUALIFICATIONS
Published by ASME on July 1, 2017
A description is not available for this item.
This document references:
A126 - Standard Specification for Gray Iron Castings for Valves, Flanges, and Pipe Fittings
May 1, 2004
This specification covers three classes of gray iron for castings intended for use as valve pressure-retaining parts, pipe fittings, and flanges. The values stated in inch-pound units are to be...
This document references:
A216/A216M - Standard Specification for Steel Castings, Carbon, Suitable for Fusion Welding, for High-Temperature Service
September 1, 2021
This specification2 covers carbon steel castings for valves, flanges, fittings, or other pressure-containing parts for high-temperature service and of quality suitable for assembly with other...
This document is referenced by:
B16.10 - Face-to-Face and End-to-End Dimensions of Valves
Published by ASME on June 20, 2022
General Application. This Standard covers face-to-face and end-to-end dimensions of straightway valves, and center-to-face and center-to-end dimensions of angle valves. Its purpose is to ensure...
This document is referenced by:
ASME B31.3 - Process Piping
Published by ASME on January 1, 2018
Rules for the Process Piping Code Section B31.31 have been developed considering piping typically found in petroleum refineries; onshore and offshore petroleum and natural gas production facilities;...
This document is referenced by:
ASME COMPANION GUIDE V2 - Companion Guide to the ASME Boiler and Pressure Vessel Codes - Volume 2
Published by ASME on January 1, 2018
Paragraph U-1 defines the scope of coverage for Section VIII, Division 1, of the ASME Code. The term scope refers to both the types of pressure equipment considered in the development of these rules,...
This document is referenced by:
ASME PROCESS PIPING - Process Piping: The Complete Guide to ASME B31.3
Published by ASME on January 1, 2009
ASME B31.3 is the generally accepted standard for process piping, worldwide. It is the de facto standard for piping for the oil, petro-chemical and chemical industries, worldwide. To facilitate its...
This document is referenced by:
ASME B31.3 SPANISH - Process Piping
Published by ASME on January 1, 2010
A description is not available for this item.
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