Model "DA4" SALES A KIT FOR PRODUCT CODE: D49-BP9S-13A00000E; Pressure Loaded Reducing Regulator (Series IV)-PLPRV; Body Size 2",Standard Diaphragm Construction; Bronze Body & Loading Chamber; 17-4ph SST Trim, 316l SST Cage, V-Tfe Seat, Fk Diaphragm;Fk Static Seal, SST/Tfe U-Cup Dynamic Seal