Model DA1 Rev E Pressure Reducing Regulator; 1-1/2" Line Size; Stainless Steel Body With Stainless Steel Spring Chamber; SN 316L Stainless Steel Trim, PTFE Seat, Beryllium Copper Diaphragm, Stainless Steel/PTFE U-Cup Static Seal, Stainless Steel/PTFE U-Cup Dynamic Seal; NPT End Connections; 70-200 PSIG Range Spring; Internal Sensing; OPT-5 Or OPT-36: Cryogenic Construction; OPT-55: Cleaned For Oxygen Service Per Cashco Specification S-1134