If the butterfly valve as a flow control use

the main choice is the correct size and type of valve. The principle of the structure of the butterfly valve is particularly suitable for the production of large diameter valves. Butterfly not only widely used in thermal power plant cooling water system is also used in the oil , gas, chemical, water treatment and general industrial.high temperature solenoid valve
Ordinary butterfly valve wafer type butterfly valve and flange type butterfly. Stud wafer type butterfly valve connected between two pipe flanges, flange butterfly valve and pipe flange connections across the flange bolts on the flange of the valve.pneumatic hand valve