MSS SP-25-2008

1. SCOPE

1.1 This marking system applies to valves,fittings, flanges, and unions used in pipingconnections which include (but are not limited to)flanged, soldered, brazed, threaded, or weldedjoints.

1.2 These specified markings serve to identify themanufacturer, the rating designation, materials ofconstruction and special service limitations imposedby the manufacturer. They are used for productidentification and to assist in proper application.

This product references:ANSI/ASME B16.1-2005 - Gray Iron Pipe Flanges and Flanged Fittings: Classes 25, 125, and 250
ANSI/ASME B16.3-2006 - Malleable Iron Threaded Fittings: Classes 150 and 300
ANSI/ASME B16.34-2004 - Valves Flanged, Threaded and Welding End
ANSI/ASME B16.23-2002 (R2006) - Cast Copper Alloy Solder Joint Drainage Fittings--DWV
ANSI/ASME B16.11-2005 - Forged Steel Fittings, Socket-Welding and Threaded
ANSI/ASME B16.15-2006 - Cast Bronze Threaded Fittings: Classes 125 and 250
ANSI/ASME B16.9-2007 - Factory-Made Wrought Buttwelding Fittings
ANSI/ASME B16.5-2003 - Pipe Flanges and Flanged Fittings: NPS 1/2 through 24
ANSI/ASME B16.24-2006 - Cast Copper Alloy Pipe Flanges and Flanged Fittings: Classes 150, 300, 600, 900, 1500 and 2500
ANSI/ASME B16.4-2006 - Gray Iron Threaded Fittings, Classes 125 and 250
ANSI/ASME B16.39-1998 - Malleable Iron Threaded Pipe Unions - Classes 150, 250, and 300
ANSI/ASME B16.12-1998 (R2006) - Cast Iron Threaded Drainage Fittings
ANSI/ASME B16.14-1991 - Ferrous Pipe Plugs, Bushings and Locknuts With Pipe Threads
ANSI/ASME B16.18-2001 (R2005) - Cast Copper Alloy Solder Joint Pressure Fittings
ANSI/ASME B16.22-2001 (R2010) - Wrought Copper and Copper Alloy Solder Joint Pressure Fittings
ANSI/ASME B16.29-2007 - Wrought Copper And Wrought Copper Alloy Solder Joint Drainage Fittings - DWV
API Spec 6A - Specification for Wellhead and Christmas Tree Equipment, Nineteenth Edition, Includes Erratas 1-5 (2009), Addendums 1, 2, 3, and 4 (2008) (PRINT EDITION INCLUDES BINDER)
API Spec 6D - Specification for Pipeline Valves
ASTM A105/A105M-05 - Standard Specification for Carbon Steel Forgings for Piping Applications
ASTM A126-04 - Standard Specification for Gray Iron Castings for Valves, Flanges, and Pipe Fittings
ASTM A182/A182M-08a - Standard Specification for Forged or Rolled Alloy and Stainless Steel Pipe Flanges, Forged Fittings, and Valves and Parts for High-Temperature Service
ASTM A216/A216M-07 - Standard Specification for Steel Castings, Carbon, Suitable for Fusion Welding, for High-Temperature Service
ASTM A217/A217M-07 - Standard Specification for Steel Castings, Martensitic Stainless and Alloy, for Pressure-Containing Parts, Suitable for High-Temperature Service
ASTM A234/A234M-07 - Standard Specification for Piping Fittings of Wrought Carbon Steel and Alloy Steel for Moderate and High Temperature Service
ASTM A240/A240M-08 - Standard Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications
ASTM A351/A351M-06 - Standard Specification for Castings, Austenitic, for Pressure-Containing Parts
ASTM A352/A352M-06 - Standard Specification for Steel Castings, Ferritic and Martensitic, for Pressure-Containing Parts, Suitable for Low-Temperature Service
ASTM A395/A395M-99(2004) - Standard Specification for Ferritic Ductile Iron Pressure-Retaining Castings for Use at Elevated Temperatures
ASTM A403/A403M-07a - Standard Specification for Wrought Austenitic Stainless Steel Piping Fittings
ASTM A420/A420M-07 - Standard Specification for Piping Fittings of Wrought Carbon Steel and Alloy Steel for Low-Temperature Service
ASTM A515/A515M-03(2007) - Standard Specification for Pressure Vessel Plates, Carbon Steel, for Intermediate- and Higher-Temperature Service
ASTM B61-08 - Standard Specification for Steam or Valve Bronze Castings
ASTM B62-02 - Standard Specification for Composition Bronze or Ounce Metal Castings
ASTM B148-97(2003)e1 - Standard Specification for Aluminum-Bronze Sand Castings
ASTM B361-02 - Standard Specification for Factory-Made Wrought Aluminum and Aluminum-Alloy Welding Fittings
ASTM B363-06a - Standard Specification for Seamless and Welded Unalloyed Titanium and Titanium Alloy Welding Fittings
ASTM B366-04be1 - Standard Specification for Factory-Made Wrought Nickel and Nickel Alloy Fittings
ASTM B584-08 - Standard Specification for Copper Alloy Sand Castings for General Applications
MSS SP-43-2008 - Wrought and Fabricated Butt-Welding Fittings for Low Pressure, Corrosion Resistant Applications, Includes Errata (Feb 2010)
MSS SP-44-2006 - Steel Pipeline Flanges, Includes Errata (May 2011)
MSS SP-75-2004 - Specification for High Test Wrought Butt Welding Fittings
MSS SP-83-2006 - Class 3000 Steel Pipe Unions Socket Welding and Threaded
MSS SP-104-2003 - Wrought Copper Solder Joint Pressure Fittings
ANSI/MSS SP-114-2007 - Corrosion Resistant Pipe Fittings Threaded and Socket Welding, Class 150 and 1000
This product referenced by:ANSI/ASME B16.5-2009 - Standard Marking System for Valves, Fittings, Flanges and Unions
ANSI/ASME B31.3-2008 - Standard Marking System for Valves, Fittings, Flanges and Unions
API Std 609 - Standard Marking System for Valves, Fittings, Flanges and Unions
ANSI/API Std 594 - Standard Marking System for Valves, Fittings, Flanges and Unions
CSA Z662-11 PACKAGE - Standard Marking System for Valves, Fittings, Flanges and Unions
ANSI/ASME B16.26-2011 - Standard Marking System for Valves, Fittings, Flanges and Unions
ANSI/ASME B16.3-2011 - Standard Marking System for Valves, Fittings, Flanges and Unions
ANSI/ASME B16.47-2011 - Standard Marking System for Valves, Fittings, Flanges and Unions
ANSI/ASME B16.24-2011 - Standard Marking System for Valves, Fittings, Flanges and Unions
ANSI/API RP 553 - Standard Marking System for Valves, Fittings, Flanges and Unions
ANSI/ASME B16.18-2012 - Standard Marking System for Valves, Fittings, Flanges and Unions
ANSI/ASME B16.22-2012 - Standard Marking System for Valves, Fittings, Flanges and Unions
ANSI/ASME B16.33-2012 - Standard Marking System for Valves, Fittings, Flanges and Unions
ANSI/ASME B16.38-2012 - Standard Marking System for Valves, Fittings, Flanges and Unions
This product replaces:MSS SP-25-1998 - Standard Marking System for Valves, Fittings, Flanges and Unions

Browse Product Family:

MSS SP-25-2008
MSS SP-25-1998

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ANSI/ASME B16.5-2009- Pipe Flanges and Flanged Fittings: NPS 1/2 through NPS 24 Metric/Inch StandardMSS SP-6-2007- Standard Finishes for Contact Faces of Pipe Flanges and Connecting-End Flanges of Valves and FittingsANSI/ASME B16.25-2007- Buttwelding EndsANSI/ASME B31.3-2008- Process PipingMSS SP-9-2008- Spot Facing for Bronze, Iron and Steel FlangesMSS SP-61-2009- Pressure Testing of ValvesMSS SP-97-2006- Integrally Reinforced Forged Branch Outlet Fittings - Socket Welding, Threaded and Buttwelding EndsANSI/ASME B16.34-2009- Valves Flanged, Threaded and Welding End, Includes Supplement (2010)ANSI/ASME B16.10-2009- Face to Face and End-to-End Dimensions of ValvesANSI/ASME B16.9-2007- Factory-Made Wrought Buttwelding Fittings
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