Model DL Rev B Pressure Reducing Regulator For General Service; 2" Line Size; Carbon Steel Body And Spring Chamber; S4N Trim: 416 Stainless Steel With BUNA-N (NBR) Seat And Neoprene (BC) Diaphragm; Mates With ASME 300 Flanged End Connections (14" Face To Face Dimension); 10-40 PSIG Range Spring; Polyethylene Vented Spring Chamber Plug