... , Dairy......... Product name:butterfly valve(sanitary butterfly valve,stainless steel pneumatic valve)1.Size: DN25-DN150, 1"-6" 2.Standards: ... , Dairy, Beverage, Beer, Wine, Pharmacy, biology, etc.5.Other: Manual, Pneumatic, Electric operation is exchangeable valve valve valve valve valve 1) Material ... replied within 24hours. butterfly valve(sanitary butterfly valve,stainless steel pneumatic valve)