Model "DA1" Pressure Reducing Regulator (Series I); Body Size 3/4",Standard Diaphragm Construction; Sales Kit A; Bronze Body,Cast Iron Spring Chamber; P Trim: 17-4ph SST Trim With Gf-Tfe Seat,Neoprene Diaphragm,; Fluorosilicone(Fk) Static Seals,Tfe Cap Seal W/Fluorosilicone(Fk);Energizer Dynamic Seal,Gf-Tfe Wiper;