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MSS - Valve Standards

Manufacturers Standardization Society - MSS - of the Valve and Fittings Industry - valve standards.

MSS - Manufacturers Standardization Society of the Valve and Fittings Industry - valve standards:

  • MSS SP-6
    Standard finishes for contact faces of pipe flanges of valves and fittings
  • MSS SP-9
    Spot facing for bronze, iron and steel flanges
  • MSS SP-25
    Standard marking system for valves, fittings, flanges and unions
  • MSS SP-42
    Class 150 corrosion resistant gate, globe, angle and check valves with flanged and butt weld ends
  • MSS SP-54
    Quality standard for steel castings - radiographic inspection method for valves, flange, fittings and other piping components
  • MSS SP-55
    Quality standard for steel castings for valves, flanges and fittings and other piping components
  • MSS SP-60
    Connecting flange joint between tapping sleeves and tapping valves
  • MSS SP-61
    Hydrostatic testing of steel valves
  • MSS SP-67
    Butterfly valves
  • MSS SP-70
    Cast iron gate valves, flanged and threaded ends
  • MSS SP-71
    Cast iron swing check valves, flanged and threaded ends
  • MSS SP-72
    Ball valves with flanged or butt - welding ends for general service
  • MSS SP-78
    Cast iron plug valves
  • MSS SP-80
    Bronze Gate, globe angle and check valves
  • MSS SP-82
    Valves pressure testing methods
  • MSS SP-84
    Steel valves socket welding and threaded ends
  • MSS SP-86
    Metric data in standards for valves, flanges and fittings

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