The electric butterfly structure characteristics of the pneumatic valve

　 . Under high temperature and high pressure conditions, still has the stable sealing performance. Its special sealing system can be guaranteed from ultra-low temperature to ultra high temperature all the temperature range has high sealing performance.
　　. Three-dimensional eccentric sealing system combined with the optimization design, make the pneumatic valves open small resistance. Butterfly plate sealing surface for the upward convex cone, open when the disc circumference of each point on the surface of the finish from sealing ring at the same time, the solid content is not easy to accumulate on the surface of the seal. Pneumatic valve closing is accomplished by elastic compression ring.
　　. The butterfly plate and sealing ring does not exist between the card phenomenon.
　　. Pneumatic valve sealing performance is not affected by temperature changes.
　　. Pneumatic valve stem diameter of axle seal using graphite compacting sealing ring. Above all ensures zero leakage and metal sealing and in front of the fire,, after all is zero leakage, therefore, is the nature of fire safety.
butterfly pneumatic valve, easy opening and closing rapidly, energy saving, fluid resistance small, can often operate. , simple structure, small volume, light weight. , can transport the mud, and the apertures least accumulated liquid. , low pressure, can achieve good sealing. And good regulation performance.

butterfly butterfly pneumatic valve selection of pneumatic valve butterfly plate installed on the diameter of the pipe direction. In the cylindrical channels of pneumatic valve pneumatic butterfly valve body and disc butterfly plate around the axis of rotation, rotation Angle for ° - Between °, rotate to °, the pneumatic valve in the fully open position. Butterfly pneumatic valve has simple structure, small volume, light weight, only by a few parts. And simply rotate ° rapid opening and closing, simple operation, at the same time, the pneumatic valve has good flow control characteristics. Butterfly pneumatic valve in the fully open position, the butterfly plate thickness is medium flows through the only pneumatic valve body resistance, and so by the pneumatic valve pressure drop is small, it has good flow control characteristics. Butterfly pneumatic valve seal and metal sealing machine has two sealing type. Elastic sealing pneumatic valve, sealing ring to be set on the pneumatic valve body or attached to the butterfly plate peripheral. Using metal seal pneumatic valve generally live longer than elastic sealing pneumatic valve, but it is hard to be completely sealed. Metal sealing can adapt high working temperature, elastic seal has the defect of being limited by the temperature. If required control pneumatic valve used as flow control, mainly is the right choice of size and type of pneumatic valve. Adjusting the structure principle of pneumatic valve is especially suitable for production of large diameter pneumatic valves. Butterfly pneumatic 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. Commonly used control pneumatic valve has the wafer butterfly valve and flanged butterfly pneumatic valve two kinds. Wafer butterfly valve pneumatic valve pneumatic valve is in the stud connection in place between two pipe flanges, the flange type butterfly is pneumatic valve pneumatic valves with flange, bolts on the pneumatic valve flange connection on the pipe flange on both ends.