As one of the leading ball check valves manufacturers and suppliers in China and equipped with a productive factory,Website: , Shanghai Hugo Valve Co.,Ltd is always at your service.Ball check valvesDescription 1. Cast iron ball type check valves with big full port and big flow rate, the sealing parts of ball type check valves is a cast iron ball which was lined rubber, the sealing is tight and reliable, ball type cast iron check valves was suitable for water medium, other industry with suspended solids and sanitary sewage.Component 1BodyDuctile Iron2Ballductile iron+ NBR/EPDM3CoverDuctile Iron4GasketNBR/EPDMTest Working pressurePN10/PN16/JIS 10KShell pressure2.1 MpaSeat pressure15.4 MpaDimensions Size DN506580100125150200250300P.C.D125145160180210240295355410Flange OD165185200220250285340405460Flange Thick191919191919202224.5L200240260300350400500600700