Germany BoLei Valve is a professional manufacturer for designing& producing butterfly valves.Pressure rating 1.0 Mpa-32Mpa; Caliber from DN15mm-3000mm; The driving mode is manual,worm drive,gear transmission,pneumatic,electric,etc. Products widely used in municipal engineering,petrochemical,power,pharmaceutical, hvac,fire fighting,environmental protection equipment,food machinery and many other fields.