Model "DA4" Pressure Loaded Reducing Valve (Series IV)-PLPRV; Body Size 1-1/2",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,Buna-N(Nbr) O-Ring Dynamic Seal;