Model SLR-2 Rev A Pressure Reducing Regulator With Non-Relieving Loader; 2" Line Size; Stainless Steel Body, Stainless Steel Loading Chamber; M9 Monel M Trim, PTFE Seat, Fluorosilicone Diaphragm, Fluorosilicone Static Seal, Stainless Steel/PTFE U-Cup Dynamic Seal; ASME 150 Raised Face Flanged End Connections; No Lower Spring; Internal Sensing; Loader Configuration: 1/4" NPT, Loader. Stainless Steel Body And Spring Chamber, Non-Relieving, Stainless Steel Trim, PTFE Seat, 2 - 50 psig Spring Range; Stainless Steel Filter, Stainless Steel Tubing, Stainless Steel Fittings; OPT-55: Cleaned For Oxygen Service Per Cashco Specification S-1134