MSS 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. | |
