Gate Valves, Brass Ball Valves, Check Valves manufacturer / supplier in China, offering Medical Shut-off Ball Valve (two piece) with Extensions & Locking Handles: Capped, Cleaned & Bagged for Oxygen: 600 Psig: Dual Gauge Port: 3", Medical Gas Isolation Ball Valve, Line Valves Copper Medical Gas Ball Valve for Oxygen Service 3/4" and so on.