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What is the American Association of Valve and Fittings Manufacturers Standardization Valve standard?
What is the valve standard of the American Association of Valves and Fittings Manufacturers?
The valve standards of American valve and fitting manufacturers are shown in Table 1-1.
Table 1-1 Standardization Standards for Valves and Fittings Manufacturers (MSS)
| Standard code name | The Standard name |
| MSS SP 6—2012 | Standard accuracy of contact surface of pipe flanges and valve and pipe fitting end flanges |
| MSS SP 9—2008 | The port plane for bronze, iron and steel flanges |
| MSS SP 25-2008 | Standard marking method for valves, pipe fittings, flanges, and pipe joints |
| MSS SP 42-2009 | Gate, stop, angle and check valves for Class 150 lb (PN20) flange and butt weld ends |
| MSS SP 43-2010 | Fought stainless steel butt welded pipe fittings (including other anticorrosive materials) |
| MSS SP 44-2011 | Steel pipe flange |
| MSSSP45—2008 | Bypass and discharge connections |
| MSSSP51—200; | Corrosion resistant flange and cast flange fittings (lightweight 150 lb) |
| MSS SP 53—1999(R2007） | Quality standard for steel casting parts for valves, flanges, pipe fittings and other pipe parts-inspection method of magnetic powder |
| MSS SP 54—1999(R2007） | Specification for steel casting for valves, flanges, fittings and other pipe parts-radiographic inspection method |
| MSSSP55—2011 | Specification for steel casting for valves, flanges, fittings and other pipe components-Visual inspection method for assessment of surface defects |
| MSSSP58—2009 | Pipe hangers and supports — Materials, design, and manufacture |
| MSS SP 60—2008 | Connect the slag drain pipe and the slag drain valve flange joint |
| MSS SP 61—2009 | Pressure test for steel valves |
| MSS SP 65—2008 | High-pressure chemical flange and threaded short pipe with lens pads |
| MSS SP 67—2011 | flygate |
| MSS SP 68—2011 | High-pressure butterfly valve with an eccentric structure |
| MSS SP 70—2011 | Flange and thread connection ash ash gate valve |
| MSS SP 71—2011 | Flange and thread end swing ash cast iron check valve |
| MSS SP 72—2010 | Universal ball valve for flange end or butt globe end |
| MSS SP 73—2003 | Copper and copper alloy pressure fittings |
| MSS SP 75—2008 | Specification for high strength, forged, butt welded pipe fittings |
| MSS SP 78—2011 | Cast iron stopcock at flange ends and threaded ends |
| MSS SP 79—2011 | Bearing welding gradient diameter joint |
| MSS SP 80—2008 | Bronze gate valve, stop valve, angle valve and check valve |
| MSS SP 81—2006 | Fange ange stainless steel knife switch valve |
| MSS SP 82-1992 | Valve pressure test method |
| MSS SP 83—2006 | Grade 3000 socket welded and threaded steel pipe live joints |
| MSS SP 85—2011 | Grey ast iron stop and angle valves at flange and threaded ends |
| MSS SP 86—2011 | Guide for the use of metric data for valves, flanges, fittings, and drive device standards |
| MSS SP 87—1991(R2011) | Pair welding connecting pipe fittings for nuclear grade I pipe |
| MSS SP 88—2010 | diaphragm valve |
| MSS SP 91—2009 | Valve manual operation guide |
| MSS SP 92—2012 | Valve User Guide |
| MSS SP 93—2008 | Inspection method for steel castings and steel forgings for valves, flanges, pipe fittings and other pipe accessories |
| MSS SP 94—2008 | Ultrasonic inspection method for quality ferrite and martensitic steel castings of valves, flanges, pipe fittings and other pipe accessories |
| MSSSP95—2006 | Die-forged pipe joint and large pipe plug |
| MSSSP96—2011 | Terminology guide for valves and their accessories |
| MSS SP 97—2006 | Overall enhancement of forging branch pipe seat fittings-socket welding, thread welding and butt welding |
| MSSSP98—2012 | Internal protective coating for valves, fire hydrants and pipe fittings |
| MSSSP99—2010 | Device valve |
| MSSSP100—2009 | Qualification requirements for elastic diaphragm valves for nuclear facilities |
| MSSSP101—1989(R2001) | Partial rotary valve drive device-flange, drive element dimensions and performance characteristics |
| MSSSP102—1989(R2001) | Multi-rotary valve drive-flange, drive element dimensions and performance characteristics |
| MSSSP104—2012 | Refined copper welded joint pressure fittings |
| MSSSP105—2010 | Standard application of device valves |
| MSSSP106—2012 | Cast copper alloy flanges and flange connection fittings of 125,150 and 300 pounds |
| MSSSP108—2012 | Elastically sealed cast iron offset stopper valve |
| MSSSP109—1997(R2006) | Copper core soft fiber welded pressure pipe fittings |
| MSSSP110—2010 | Thread, socket welding, flexible fiber welding, grooves and external connection ball valves |
| MSS SP 111—2005 | Cshing made of grey iron and ball iron |
| MSSSP112—2010 | Specification for visual and tactile methods for assessment of rough surfaces |
| MSSSP113—2001(R2007) | Connection head of the slag drain machine and the slag drain valve |
| MSSSP114—2007 | Corrosion resistant thread and socket welded pipe fittings for 150 and 1000 lbs grades |
| MSSSP115—2010 | Gas used flow valve |
| MSSSP117—2010 | Bellet seal stop and gate valves |
| MSSSP118—2007 | Compact steel stop and check valves for flange, flat, threaded and welded ends (for chemical and petroleum refining |
| MSSSP119—2010 | Refine the bell flower end |
| MSSSP120—2011 | Design requirements of flexible graphite packing system for lifting valve stem (open bar) |
| MSSSP121—2006 | Test method for identification of steel valve of lifting valve stem (open bar) |
| MSSSP122—2005 | Ball valves for the plastic industry |
| MSS SP123—1998(R2006) | Steel threaded connection and welded connection for steel water pipes |
| MSSSP124—2001 | Open sleeve structure |
| MSS SP 125—2010 | Spring-loaded center guide grey iron and ductile iron line check valves |
| MSS SP 126—2007 | Steel line check valve at the spring-loaded center guide |
| MSS SP 128—2006 | cast iron gate valve |
| MSS SP 129—2007 | Copper-nickel material socket welding to joint pipe fittings and joints |
| MSS SP 130—2003 | Valve with a bellows seal |
| MSS SP 131—2010 | Manual valve metal valve |
| MSS SP 132—2010 | Device valve for the compression packing system |
| MSS SP 133—2010 | Overflow valve for low pressure gas |
| MSS SP 134—2010 | Cryogenic valve application includes body / cap requirements |
| MSS SP 135—2010 | High-pressure steel knife-shaped brake plate |
| MSS SP 136—2007 | Ductile iron rotary check valve |
