Model SLR-2 Rev A Pressure Reducing Regulator With Non-Relieving Loader; 2" Line Size; Sales Kit A; Bronze Body, Bronze Loading Chamber; M7 Monel M Trim, Polyurethane Seat, Fluorosilicone Diaphragm, Fluorosilicone Static Seal, Stainless Steel/PTFE U-Cup Dynamic Seal; OPT-55: Cleaned For Oxygen Service Per Cashco Specification S-1134