... dairy,beverage ,pharmacy these food fields . 1.Type: valves(check valve ,butterfly valve,ball valve,pneumatic valve) 2 ... equipment , aviation, boiler heat exchanger and other fields. 6.As a professional manufacturer and designer of valves ,fittingd and pumps, ... elbow/bend,cross,reducer ,union,ferrule adaptor,caps,clamp ...... Valves:butterfly valve,ball valve,check valve ...... Pumps:centrifugal pump, ...