... , PN16, ANSI 125, ANSI 150.Materials available in .Body/Bonnet: Cast Iron, Ductile Iron, Cast Steel, Stainless Steel & Duplex .Lining (Optional): Fluorine -- PTFE, FEP ... , EPDM, CSPE, FKM, SI .Diaphragm: Rubber or Fluorine .Compressor/Disc: Cast Iron, Ductile Iron, Cast Steel, Stainless Steel.Stem: Carbon Steel & Stainless Steel.Handwheel ...