... ball valve3) Check valve: Welded check valve, threaded check valve, clamp type check valve,movable check valve 4) Diaphragm valve: quick ... , U-typediaphragm valve5) Sample valves, stop reversing valves, forged stainless steel valves, and pipefittings6) Standard: AAA, DIN, SMS, IDF, RJT The ... . We value the good relationships with customers. high quality stainless steel lifting ball butterfly valves