GB valve is the marine valve designed and manufactured according to the Chinese National Standard, CB valve is the marine valve designed and manuafctured according to the China Marine Standard.CBM valve is used to replace JIS marine valve, with the Chinese marine valve appearance and JIS flange size and JIS structure size.The category of GB/CB/CBM valve:check valve, globe valve, gate valve, butterfly valve, air vent head, drain valve, self-closing valve, safey valve,ball valve..etc and other accessories such as sea water strainer, air filter, oil filter, sounding head, sounding cap,sight glass,suction inlet,mud box..etc.They are widely used on the pipe system of sea water,fresh water, fuel oil, lubrication and steam.According to the medium, the body maaterial can be cast iron, cast steel, bronze, brass, nodular iron, the trim material can be stainless steel, bronze, brass.Certificate: ABS, DNV/GL, BV, LR, CCS, NK,IRS, RMRS,RINAWorking Pressure: PN6,PN10,PN16,PN25,PN40,PN64,PN100Nominal Size:DN6~DN1200We supply 12months warranty for all valves we supply.