... 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 ... , triplet diaphragm valve, U-type diaphragm valve5) Sample valves, stop reversing valves, forged stainless steel valves, and pipe fittings6) Standard: AAA, DIN, SMS ...