Double Disc Check Valve, 4 In, Flange, Iron

Double Disc Check Valve, Material of Construction Cast Iron, Size 4 In, 125 Class Wafer Flange Connection, Overall Height 6 7/8 In., Rated For 200 PSI, Max. Temp. 250 F, Seal Buna N, Standards FM Approval And API 598 Heavy-Duty Check ValvesMax. pressure: 200 psiSpring-Loaded/Dual-DoorWafer-style ASME Class 125 and Class 150 flanged valves fit between flat-face and raised-face flanges; reduce water hammer, surge, and backflow in piping systems. Cast-iron models have bronze or stainless steel disc and stainless steel spring. 316 stainless steel models have stainless steel disc and spring. For use in liquid and air service in industrial process, wastewater, and pulp and paper industries.Cast-iron are FM Approved; stainless meet API 594.Max. temp.: 250 F (cast iron); 600 F (stainless steel)