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,Neoprene Diaphragm,; Buna-N(Nbr) Static Seals,Tfe U-Cup W/SST Energizer Dynamic Seal;