... , Beer, Wine, Pharmacy, biology, etc.5.Other: Manual, Pneumatic, Electric operation is exchangeable valve valve valve valve valve1) Material: SUS 304.316L 2) Minimum order ... response,all your question will be replied within 24hours. butterfly valve(sanitary butterfly valve,stainless steel pneumatic valve) Butterfly Valve(Sanitary Butterfly Valve,Stainless Steel Pneumatic Valve)