·      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 union  s

·      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