... forged material. Fully precision machined by CNC machine.. Connection: clamp end and weld end Male end, female end Seal( ... valve3) Check valve: Welded check valve, threaded check valve, clamp type check valve, movable check valve 4 ) Diaphragm valve: quick ... -installed diaphragm valve, triplet diaphragm valve, U-type diaphragm valve5) Sample valves, stop reversing valves, forged stainless ...