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MSS SP-137-2013Quality Standard for Positive Material Identification of Metal Valves, Flanges, Fittings, and Other Piping Componentsstandard by Manufacturers Standardization Society, 03/30/2013
MSS SP-137-2007Quality Standard for Positive Material Identification of Metal Valves, Flanges, Fittings, and Other Piping Componentsstandard by Manufacturers Standardization Society, 05/01/2007
MSS SP-136-2014 AmendmentAmendment for SP-136-2014 MSS Ductile Iron Swing Check ValvesAmendment by Manufacturers Standardization Society, 10/09/2017
MSS SP-136-2014Ductile Iron Swing Check Valves, Includes Amentment (October 2017)standard by Manufacturers Standardization Society, 09/01/2014
MSS SP-136-2007Ductile Iron Swing Check Valvesstandard by Manufacturers Standardization Society, 01/01/2007
MSS SP-135-2021 Errata SheetErrata Sheet for High Pressure Knife Gate ValvesAmendment by Manufacturers Standardization Society, 03/24/2022
MSS SP-135-2021 Errata SheetErrata Sheet for High Pressure Knife Gate ValvesAmendment by Manufacturers Standardization Society, 03/24/2022
MSS SP-135-2016High Pressure Steel Knife Gate Valvesstandard by Manufacturers Standardization Society, 06/01/2016
MSS SP-135-2010High Pressure Steel Knife Gate Valvesstandard by Manufacturers Standardization Society, 09/01/2010
MSS SP-135-2006High Pressure Steel Knife Gate Valvesstandard by Manufacturers Standardization Society, 01/01/2006
MSS SP-134-2012Valves for Cryogenic Service; Including Requirements for Body/Bonnet Extensionsstandard by Manufacturers Standardization Society, 05/01/2012
MSS SP-134-2010Valves for Cryogenic Service Including Requirements for Body/Bonnet Extensionsstandard by Manufacturers Standardization Society, 09/01/2010