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Manufacturers Standardization Society

Manufacturers Standardization Society

MSSMSS(Manufacturers
Standardization Society) is the only organization in the world dedicated
exclusively to the technical needs of the valve and fittings industry. Standards
and codes are written and revised by 25 technical committees and address topics
such as valves, valve actuators, pipe fittings, flanges, and pipe
hangers.
Officially founded in 1924, the Manufacturers Standardization
Society (MSS) of the Valve and Fittings Industry is a non-profit technical
association organized for development and improvement of industry, national and
international codes and standards for: Valves, Valve Actuators, Pipe Fittings,
Valve Modifications, Flanges, Pipe Hangers, Assorted Seals
The primary
function of MSS is to provide its members the means to develop engineering
standard practices for the use and benefit of the industry and users of its
products. The Society, the only organization dedicated solely to the technical
needs of the industry, is currently comprised of 25 technical committees to
write, revise and reaffirm industry standards.
In its leadership role,
the Society also contributes to and monitors code and standard development
activities worldwide. MSS, in cooperation with other standardizing bodies,
appoints representatives to other standardization organization committees to
share the views and objectives of the Society.
Standards organizations in
which MSS currently participates include, but are not limited to, the American
Society of Mechanical Engineers (ASME), American National Standards Institute
(ANSI), American Society for Testing and Materials (ASTM), American Petroleum
Institute (API), American Waterworks Association (AWWA) and the National Fire
Protection Association (NFPA).
At the international level, MSS
representatives have served as leaders in U.S. delegations in many of the
meetings of ISO working groups, subcommittees, and main committees addressing
applicable areas of interest.
Most recent MSS Standards:
Standard
Applications 
SP-6-2012 Standard Finishes for Contact Faces of Pipe Flanges
and Connecting-End Flanges of Valves and Fittings 
SP-25-2008 Standard
Marking Systems for Valves, Fittings, Flanges and Unions 
SP-43-2008 Wrought
and Fabricated Butt-Welding Fittings for Low Pressure, Corrosion Resistant
Applications(Errata Sheet issued – February 2010) 
SP-45-2003 (R 2008) Bypass
and Drain Connections 
SP-53-1999 (R 2007) Quality Standard for Steel
Castings and Forgings for Valves, Flanges and Fittings and Other Piping
Components – Magnetic Particle Exam Method 
SP-55-2011 Quality Standard for
Steel Castings for Valves, Flanges, Fittings, and Other Piping Components –
Visual Method for Evaluation of Surface Irregularities (ANSI-approved American
National Standard) 
SP-60-2012 Connecting Flange Joints Between Tapping
Sleeves and Tapping Valves 
SP-65-2012 High Pressure Chemical Industry
Flanges and Threaded Stubs for Use with Lens Gaskets 
SP-68-2011 High
Pressure Butterfly Valves with Offset Design 
SP-70-2011 Gray Iron Gate
Valves, Flanged and Threaded Ends 
SP-72-2010a Ball Valves with Flanged or
Butt-Welding Ends for General Service 
SP-78-2011 Gray Iron Plug Valves,
Flanged and Threaded Ends 
SP-80-2008 Bronze Gate, Globe, Angle, and Check
Valves 
SP-83-2006 Class 3000 Steel Pipe Unions Socket Welding and
Threaded 
SP-85-2011 Gray Iron Globe & Angle Valves, Flanged and Threaded
Ends 
SP-87-1991 (R 1996 – Reinstated 2011) Factory-Made Butt-Welding
Fittings for Class I Nuclear Piping Applications 
SP-91-2009 Guidelines for
Manual Operation of Valves 
SP-93-2008 Quality Standard for Steel Castings
and Forgings for Valves, Flanges, Fittings, and Other Piping Components Liquid
Penetrant Examination Method 
SP-95-2006 Swage(d) Nipples and Bull
Plugs 
SP-97-2012 Integrally Reinforced Forged Branch Outlet Fittings –
Socket Welding, Threaded, and Buttwelding Ends 
SP-99-2010 Instrument
Valves 
SP-101-1989 (R 2001) Part-Turn Valve Actuator Attachment – Flange and
Driving Component Dimensions and Performance Characteristics 
SP-104-2012
Wrought Copper Solder-Joint Pressure Fittings 
SP-106-2012 Cast Copper Alloy
Flanges and Flanged Fittings: Class 125, 150, and 300 
SP-109-2012 Welded
Fabricated Copper Solder Joint Pressure Fittings 
SP-111-2012 Gray-Iron and
Ductile-Iron Tapping Sleeves 
SP-112-Comparator Quality Standard for
Evaluation of Cast Surface Finishes -Visual and Tactile Method. This SP must be
used with a 10-surface, three dimensional Cast Surface Comparator, which is a
necessary part of the Standard. 
SP-114-2007 Corrosion Resistant Pipe
Fittings Threaded and Socket Welding Class 150 and 1000 (ANSI-approved American
National Standard) 
SP-116-2003 Service-Line Valves and Fittings for Drinking
Water Systems 
SP-117-2011 Bellows Seals for Globe and Gate
Valves 
SP-119-2010 Factory-Made Wrought Belled End Pipe Fittings for
Socket-Welding 
SP-121-2006 Qualification Testing Methods for Stem Packing
for Rising Stem Steel Valves 
SP-123-1998 (R 2006) Non-Ferrous Threaded and
Solder-Joint Unions for Use With Copper Water Tube 
SP-125-2010 Gray Iron and
Ductile Iron In-Line, Spring-Loaded, Center-Guided Check Valves 
SP-127-2001
Bracing for Piping Systems Seismic-Wind-Dynamic Design, Selection,
Application 
SP-129-2003 (R 2007) Copper-Nickel Socket-Welding Fittings and
Unions 
SP-131-2010 Metallic Manually Operated Gas Distribution
Valves 
SP-133-2010 Excess Flow Valves for Low Pressure Fuel Gas
Appliances 
SP-135-2010 High Pressure Knife Gate Valves 
SP-137-2007
Quality Standard for Positive Material Identification of Metal Valves, Flanges,
Fittings, and Other Piping Components 
SP-139-2010 Copper Alloy Gate, Globe,
Angle, and Check Valves for Low Pressure/Low Temperature Plumbing
Applications 
SP-141-2012 Multi-Turn and Check Valve
Modifications 
SP-143-2012 Live-Loaded Valve Stem Packing
Systems 
SP-9-2008 Spot Facing for Bronze, Iron and Steel
Flanges 
SP-42-2009 Corrosion Resistant Gate, Globe, Angle and Check Valves
with Flanged and Butt Weld Ends (Classes 150, 300 & 600) 
SP-44-2010
Steel Pipeline Flanges, (Errata Sheet issued – May 2010) 
SP-51-2012 Class
150LW Corrosion Resistant Cast Flanges and Flanged Fittings 
SP-54-1999 (R
2007) Quality Standard for Steel Castings for Valves, Flanges, and Fittings and
Other Piping Components – Radiographic Examination Method 
SP-58-2009 Pipe
Hangers and Supports – Materials, Design, Manufacture, Selection, Application,
and Installation (ANSI-approved American National Standard) 
SP-61-2009
Pressure Testing of Valves 
SP-67-2011 Butterfly Valves 
SP-69-2003 Pipe
Hangers and Supports – Selection and Application 
SP-71-2011 Gray Iron Swing
Check Valves, Flanged and Threaded Ends 
SP-75-2008 Specification for
High-Test, Wrought, Butt-Welding Fittings 
SP-79-2011 Socket Welding Reducer
Inserts 
SP-81-2006a Stainless Steel, Bonnetless, Flanged Knife Gate
Valves 
SP-85-2002 Gray Iron Globe & Angle Valves Flanged and Threaded
Ends 
SP-86-2009 Guidelines for Metric Data in Standards for Valves, Flanges,
Fittings, and Actuators(Errata Sheet issued – July 2011) 
SP-88-2010
Diaphragm Valves 
SP-92-2012 MSS Valve User Guide 
SP-94-2008 Quality
Standard for Ferritic and Martensitic Steel Castings for Valves, Flanges,
Fittings, and Other Piping Components – Ultrasonic Examination
Method 
SP-96-2011 Guidelines on Terminology for Valves and
Fittings 
SP-98-2012 Protective Coatings for the Interior of Valves,
Hydrants, and Fittings 
SP-100-2009 Qualification Requirements for Elastomer
Diaphragms for Nuclear Service Diaphragm Type Valves 
SP-102-1989 (R 2001)
Multi-Turn Valve Actuator Attachment – Flange and Driving Component Dimensions
and Performance Characteristics 
SP-105-2010 Instrument Valves for Code
Applications 
SP-108-2012 Resilient-Seated Cast Iron Eccentric Plug
Valves 
SP-110-2010 Ball Valves Threaded, Socket-Welding, Solder Joint,
Grooved and Flared Ends(Errata Sheet issued – August 2010) 
SP-112-2010
Quality Standard for Evaluation of Cast Surface Finishes -Visual and Tactile
Method. This SP must be used with a 10-surface, three dimensional Cast Surface
Comparator, which is a necessary part of the Standard. 
SP-113-2012
Connecting Joints between Tapping Machines and Tapping Valves 
SP-115-2010
Excess Flow Valves, 1 1/4 NPS and Smaller, for Natural Gas
Service 
SP-116-2011 Service-Line Valves and Fittings for Drinking Water
Systems 
SP-118-2007 Compact Steel Globe & Check Valves – Flanged,
Flangeless, Threaded & Welding Ends (Chemical & Petroleum Refinery
Service) 
SP-120-2011 Flexible Graphite Packing System for Rising Stem Valves
– Design Requirements 
SP-122-2012 Plastic Industrial Ball
Valves 
SP-124-2012 Fabricated Tapping Sleeves 
SP-126-2007 Steel In-Line
Spring-Assisted Center Guided Check Valves 
SP-128-2012 Ductile Iron Gate
Valves 
SP-130-2003 Bellows Seals for Instrument Valves 
SP-132-2010
Compression Packing Systems for Instrument Valves 
SP-134-2012 Valves for
Cryogenic Service Including Requirements for Body/Bonnet
Extensions 
SP-136-2007 Ductile Iron Swing Check Valves 
SP-138-2009
Quality Standard Practice for Oxygen Cleaning of Valves &
Fittings 
SP-140-2012 Quality Standard Practice for Preparation of Valves and
Fittings for Silicone-Free Service 
SP-142-2012 Excess Flow Valves for Fuel
Gas Service, NPS 1½ through 12

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www.yaang.com provide a wide range of steel products as Steel pipe, Steel pipes and seamless pipes, Alloy pipes, Pipe fittings, Composite steel pipe used in the industry, construction etc.

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