MSS SP-25-2008 Standard Marking System for Valves, Fittings, Flanges and Unions standard by Manufacturers Standardization Society, 01/01/2008
MSS SP-137-2007 Quality Standard for Positive Material Identification of Metal Valves, Flanges, Fittings, and Other Piping Components standard by Manufacturers Standardization Society, 05/01/2007
MSS SP-51-2007 Class 150LW Corrosion Resistant Cast Flanges and Flanged Fittings standard by Manufacturers Standardization Society, 01/01/2007
MSS SP-136-2007 Ductile Iron Swing Check Valves standard by Manufacturers Standardization Society, 01/01/2007
MSS SP-126-2007 Steel In-Line Spring-Assisted Center Guided Check Valves standard by Manufacturers Standardization Society, 01/01/2007
MSS SP-114-2007 Corrosion Resistant Pipe Fittings Threaded and Socket Welding, Class 150 and 1000 standard by Manufacturers Standardization Society, 01/01/2007
MSS SP-6-2007 Standard Finishes for Contact Faces of Pipe Flanges and Connecting-End Flanges of Valves and Fittings standard by Manufacturers Standardization Society, 01/01/2007
MSS SP-118-2007 [ Withdrawn ] Compact Steel Globe and Check Valves - Flanged, Flangeless, Threaded and Welding Ends (Chemical and Petroleum Refinery Service) standard by Manufacturers Standardization Society, 01/01/2007
MSS SP-128-2006 Ductile Iron Gate Valves standard by Manufacturers Standardization Society, 02/01/2006
MSS SP-115-2006 Excess Flow Valves for Natural Gas Service standard by Manufacturers Standardization Society, 01/01/2006
MSS SP-44-2006 Steel Pipeline Flanges, Includes Errata (May 2011) standard by Manufacturers Standardization Society, 01/01/2006
MSS SP-121-2006 [ Withdrawn ] Qualification Testing Methods for Stem Packing for Rising Stem Steel Valves standard by Manufacturers Standardization Society, 01/01/2006