Model SLR-1 Rev A Pressure Reducing Regulator With Self-Relieving Loader; 1" Line Size; Sales Kit A; Stainless Steel Body, Stainless Steel Loading Chamber; SL 316L Stainless Steel Trim, GF-TFE Seat, Fluorocarbon Diaphragm, Fluorocarbon Static Seal, PTFE Cap With Fluorocarbon Energizer And GF-TFE Wiper Dynamic Seal