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MSS SP-106-2025

Cast Copper Alloy Flanges and Flanged Fittings: Class 125, 150, and 300
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The purpose of the MSS SP-106-2025 standard is to establish requirements for cast copper alloy flanges and flanged fittings that are rated for Class 125, 150, and 300 pressures.

This standard practice is used to provide a clear and common basis for the manufacture and use of these specific components, particularly those whose dimensions, ratings, and materials are not covered by the ASME B16.24 standard.

In essence, it is used by manufacturers, users, and the general public in the piping industry to ensure consistency, safety, and interchangeability for:

  • Cast copper alloy flanges
  • Flanged fittings

The standard specifically covers details such as:

  • Materials (e.g., specific ASTM copper alloys)
  • Dimensions
  • Pressure-Temperature ratings
  • General requirements
  • Bolting requirements

It applies to types such as solder joint flanges, threaded flanges, blind flanges, and flanged fittings within the specified pressure classes.

SDO MSS: Manufacturers Standardization Society
Document Number SP-106
Publication Date Oct. 1, 2025
Language en - English
Page Count
Revision Level
Supercedes
Committee
Publish Date Document Id Type View
Oct. 1, 2025 MSS SP-106-2025 Revision
April 1, 2019 MSS SP-106-2019 Revision