INDUSTRY STANDARDS

  •  Astm – American Society For Testing And Materials
  •  Ansi – American National Standards Institute
  •  Api – American Petroleum Institute
  •  Mss – Manufacturers Standarization Society Of The Fittings Industry
  •  Awwa – American Water Works Association
  •  Ks – Korean Industrial Standards
  •  Jis – Japanese Industrial Standards
  •  Bs – British Standard

FLANGES

  •  So – Slipon
  •  Wn – Weldneck
  •  Bl – Blind
  •  Ff – Flat Face
  •  Rf – Raised Face
  •  Rtj – Ring-type Joint

FITTINGS

  •  Bw – Buttweld
  •  Smls – Seamless
  •  Sw – Socketweld
  •  Npt – National Pipe Thread
  •  Bspt – Bristish Standard Pipe Thread

GASKETS

  •  Rf – Raised Face
  •  Ff – Full Face
  •  Rtj – Ring Joint Gasket
  •  Spw – Spirol Wound Gasket
  •  Ir – Inner Ring
  •  Or – Outer Ring
  •  Caf – Asbestos
  •  Cnaf – Non Asbestos

VALVES

  •  Nrv – Non Return Valve
  •  Prv – Pressure Reducing Valve