Gate Valves, Brass Ball Valves, Check Valves manufacturer / supplier in China, offering Medical Gas Shut-off Valve Box for Oxygen VAC Air Gas, 2" 1/2′′ Brass Adaptor Connector with Male Used for Fire Angle Hose or Siamese Connections, DN25-DN65 F 7334 JIS 5K JIS 10K Bronze Hose Angle Valve and so on.