Model DA1 Rev E Pressure Reducing Regulator; 1" Line Size; Ductile Iron Body With Ductile Iron Spring Chamber; PW 17-4PH Stainless Steel Trim, 316L Stainless Steel Cage, BUNA-N Seat, BUNA-N Diaphragm, BUNA-N Static Seal, Stainless Steel/PTFE U-Cup Dynamic Seal; NPT End Connections; 10-35 PSIG Range Spring; Internal Sensing