Model "DA6" Dome Loaded Back Pressure Regulator (Series VI)-PLBPV; Body Size 1",Standard Diaphragm Construction; Sales Kit A; Cf3m Body,Cast Iron Loading Chamber; P Trim: 17-4ph SST Trim With Gf-Tfe Seat / Gasket,Fluorosilicone;(Fk) Diaphragm; Fluorocarbon Elastomer(Hk) Static Seals,Tfe Cap Seal W/Fluorocarbon;Elastomer(Hk) Energizer;