Butterfly Valve, High Performance Butterfly Valve, Gate Valve manufacturer / supplier in China, offering FM UL Deluge Valve with Solenoid Valve and Pressure Gauge Used in Fire Sprinkler System, 300psi Flanged Deluge Valve Set with UL FM Approval, 4′′ DN100 Fire Fighting Equipment FM UL Approved 350psi Swing Check Valve with Grooved End and so on.