... Sanitary Pneumatic Butterfly Valve 1 Size:1"-4" 2 Material:SUS304,SUS316L 3 Standard:DIN,3A,SMS,ISO Sanitary Stainless Steel SMS Sanitary ... : flange butterfly valve,weided butterfly valve,clamped butterfly valve5) Application:dairy,food,beer,beverage,pharmacy,cosmetic,wine,biology,chemical,etc SMS: Stainless Steel SMS Sanitary Pneumatic Butterfly Valve