... specialized in producing fire extinguisher,accessories like dry powder valve,co2 valve,cylinder,neck rings,handles etc.In addition,we ... equipment,such as fire hose,pressure gauge,nozzle,landing valve,jet apray branch pipe,hose coupling,fire cabinet and ... safety equpment. the following is our mainly technical parameters:Inlet thread Outlet threadGauge connection thread pressure MpaM25X2W21.7X14G1/8X2818 ...