... , 2.5, 4.0, 6.4MPamaterial of stop check valves:bronze,brass,gun metal,cast iron,forged steel.cast steel,stainless ... steel,nodular cast ironjiangyin marine valves co.,ltd provides marine valves with different types such as DIN, ... JIS,GB etc,valves are exported to Singapore,Australia,German,Korea,Japan ... service for u. flanged cast steel globe check valves