DUAL PLATE WAFER CHECK VALVE 1 SIZE(INCH) 1/2” 1” 2” 3” 4” 6” 8” 10” ....48”(MM) 15, 25, 50, 80, 100, 125, 150, 200, 250, ...1200 2PRESSURE(CLASS) 150, 300, 600, 800, 900, 1500, 2500(MPA) 1.0, 1.6, 2.5, 4.0, 6.4, 10, 13, 15, 25, 42 3BODY MATERIALA216WCB, , SS316,..