Model "DA3" Pressure Loaded Reducing Valve (Series III)-PLPRV; Body Size 3",Standard Diaphragm Construction; Sales Kit A; Cf3m Body,316l SST Loading Chamber; P Trim: 17-4ph SST Trim With Polyall Seat,Ethylene Propylene(Epr);Diaphragm; Ethylene Propylene(Epr) Static Seals,Tfe Cap Seal W/Ethylene Propylene;(Epr) Energizer Dynamic Seal,Gf-Tfe Wiper