... Threaded, Clamped Apply to Beer, Milk, Diary, Beverage... Three-piece Ball ValveConnection mode:clamped,Welded,threaded Specification: 1/2"-4", applied ... principle: remote controlled operation by the driving gear or manual operation by the handel Three drive forms: normally closed, normally opened ... application: pharmacy, beer, food, dairy, beverage, cosmetic, chemical industry Three-piece Ball Valve