All Categories > Check Valves > Twin Door Check Valves > Wafer Pattern Twin Door Check Valve - Cast Iron > Advanced Search Advanced Search in Wafer Pattern Twin Door Check Valve - Cast Iron Unit of Measure Imperial Metric Both Specifications Type Twin Door Size (mm) No Preference 50 65 75 100 125 150 200 250 300 350 400 450 500 600 Size (in) No Preference 2 2 1/2 3 4 5 6 8 10 12 14 16 18 20 24 Flow Coefficient (Cv) No Preference 48 90 171 291 494 705 1795 2563 4295 5463 7355 9357 12004 17804 Weight (kg) No Preference 1.8 2.5 3.40 6.1 7.9 12.0 22.7 31.8 49.9 77.1 102.1 127.0 176.9 267.6 Weight (lb) No Preference 4 5 1/2 7.50 13.5 17.5 26.5 50 70 110 170 225 280 390 590 Maximum Operating Pressure PMO 125 psi at 250 ºF 150 psi at 150 ºF 175 psi at 250 ºF 200 psi at 150 ºF Disc Material Aluminum Bronze 316 Stainless Steel Clear Cancel Advanced Search