What is the butterfly valve？

       The direction of diameter butterfly plate installed in the pipe clampvalve. Cylindrical channel in the butterfly valve, the disc-shaped butterfly plate around the axis of rotation, rotation angle of 0 ° -90 °, the 90 ° rotation, the valve is full state license. This valve is usually installed horizontally. Wafer type butterfly valve has the advantages of simple structure, small volume, light weight, only by a few parts. 

     But only can be rotated 90 ° rapid opening and closing, simple operation, the valve has a good flow control characteristics. Butterfly valve in the fully open position, the disc thickness is only when the medium flows through the body resistance, thus generated by the valve pressure drop is small, ithas a good flow control characteristics. Butterfly valve with elastic metal seal and the seal two kinds of sealed type. Elastic sealing valves, seals can be mounted on the body or attached to the disc periphery.

Cross Roller Guideway

     Metal sealed valves are generally higher than the flexibility of the valve seal and long life, but it is very difficult to completely seal.Metal seal can adapt to high temperature, flexible seal is restricted by temperature defects.

If asked to use as a flow control valve, the main choice is the right size and type of valve. Butterfly valve structure principle is particularly suitable for production of large diameter valves.Butterfly not only widely used in oil, gas, chemical, general industrial water treatment, but also used in thermal power plant cooling water system.

     Common butterfly valve wafer butterfly valve and flange type butterfly valve two. Wafer type butterfly valve is the valveconnection between two pipe flanges with bolts, flange type butterfly valve is a valve with a flange, on both ends of the valve in the pipe flange connection flange bolt.

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