Model DL Rev B Pressure Reducing Regulator For General Service; 1-1/2" Line Size; Carbon Steel Body And Spring Chamber; S1 Trim: 316 Stainless Steel Metal Seat With 302 Stainless Steel Diaphragm; Mates With ASME 150 Flanged End Connections (14" Face To Face Dimension); 10-40 PSIG Range Spring; Polyethylene Vented Spring Chamber Plug