Model DA1 Rev E Pressure Reducing Regulator; 1" Line Size; Sales Kit A; Carbon Steel Body With Carbon Steel Spring Chamber; PC 17-4PH Stainless Steel Trim, 316L Stainless Steel Cage, GF-TFE Seat, Fluorocarbon Diaphragm, Fluorocarbon Static Seal, Fluorocarbon O-Ring Dynamic Seal