... the sanitary stainless steel valve as follows: 1) Butterfly valve: threaded butterfly valve, quick-installed butterfly valve, welded butterfly valve, flange butterfly valve, threaded-welded butterfly valve, flange ... 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 ...