Model DL Rev B Pressure Reducing Regulator For General Service; 1-1/2" Line Size; Ductile Iron Body And Spring Chamber; S4 Trim: 416 Stainless Steel With PTFE Seat And Neoprene (BC) Diaphragm; NPT Threaded End Connections; 30-80 PSIG Range Spring; Polyethylene Vented Spring Chamber Plug