Gate Valves, Brass Ball Valves, Check Valves manufacturer / supplier in China, offering DN20 Stainless Steel Gate Valve BSPP G3/4 Rotary Sluice Valve for Water Oil, China Manufacturer of 1 2 3 Inch 4 Inch 15 - 50mm Brass Female Gate Valve List 200W0g Valve, Non-Rising Stem Compression Ends Brass Gate Valve and so on.