Model SLR-2 Rev A Pressure Reducing Regulator With Non-Relieving Loader; 3/4" Line Size, OPT-81: Full Diaphragm Support; Carbon Steel Body, Carbon Steel Loading Chamber; P3 17-4PH Stainless Steel Trim, 316L Stainless Steel Cage, CTFE Seat, Neoprene Diaphragm, BUNA-N Static Seal, Stainless Steel/PTFE U-Cup Dynamic Seal; NPT End Connections; Lower Spring 2-5 PSIG Range; External Sensing; Loader Configuration: 1/4" NPT, Stainless Steel Body And Spring Chamber, Non-Relieving, Stainless Steel Trim, PTFE Seat, 10 - 625 psig Spring Range; Stainless Steel Filter, Stainless Steel Tubing, Stainless Steel Fittings