The working principle of the pneumatic butterfly valve

Working principle of the pneumatic butterfly valve




pneumatic butterfly valve pneumatic actuators with butterfly valve is mainly composed of two parts, pneumatic butterfly valve is used with the rotating circular disc for opening and closing of the valve orange, enabling action in order to realize the main block valves use pneumatic valve, can be designed to have a adjustment or section of the valve and the adjustment function, disc valve on the low voltage and medium caliber pipe used more and more.
the butterfly valve has simple structure, small volume, light weight, the internal structure is simple, only by a few parts, and only need to rotate 90 ° can quickly close to start. At the same time the electric valve has good flow control characteristics. Butterfly valve in the fully open position, the butterfly plate thickness is medium flows through the body when the only resistance, thus produced by the valve pressure is small, it has good flow control characteristics. Butterfly valves have a seal and metal seal two kinds of seal type. Elastic sealing valve, sealing ring can be embedded in the body or attached to the butterfly plate peripheral.
if required butterfly valve used as flow control, mainly is the right choice of the size and type of valve. The structure and principles of butterfly valve is especially suitable for production of large diameter valves. Butterfly valve not only in the oil, gas, chemical industry, water treatment and other general industrial used widely, but also applied to the cooling water system of thermal power plants.