Model D Rev D; SALES B KIT FOR PRODUCT CODE:2B6-ASK7-124000M0D; Pressure Reducing Regulator For General Service; 1" Line Size; Stainless Steel Body And Spring Chamber; SK Trim: 316 Stainless Steel With Fluorocarbon Elastomer (FKM) Seat And Diaphragm; Opt-4: Piston Stabilizer For Gaseous Service; Polyethylene Vented Spring Chamber Plug; Opt-55: Oxygen Cleaning Per Cashco Specification S-1134