Model DA1 Rev E Pressure Reducing Regulator; 3" Line Size; Sales Kit A; Carbon Steel Body With Carbon Steel Spring Chamber; PH 17-4PH Stainless Steel Trim, 316L Stainless Steel Cage, Polyurethane Seat, BUNA-N Diaphragm, BUNA-N Static Seal, PTFE Cap With BUNA-N Energizer And GF-TFE Wiper Dynamic Seal