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How to judge the common specifications and models of pneumatic butterfly valve? What is the meaning of three eccentricities

How to judge the common specification and model of pneumatic butterfly valve? What is the meaning of three eccentricity?

To understand why the trapezoidal valve seal ring is selected for the loose sleeve part of pneumatic ball valve? When the ball valve is connected with the ball valve as a whole, the displacement will be formed by connecting the ball valve and the valve as a whole, so that the displacement will be generated by the whole valve through the bolt connection. The pneumatic ball valve adopts the principle of valve compression elastic deformation, which makes it simple and convenient to install in pipeline engineering, and can bear the axial tension of pipeline. The metal and seal ring of pneumatic ball valve shall be selected in strict accordance with the performance and user requirements.
The material is coated with high-strength anti-corrosion paint, and the connecting bolts of each part are made of high-strength carbon steel or stainless steel. Because there is a certain gap between the body and the telescopic tube, it has a certain axial and radial displacement. In the pipeline, it can effectively compensate and relieve the thrust of pipeline and blind plate, and facilitate the installation, maintenance and replacement of pumps and valves. It is the most ideal supporting product in the pipeline installation and operation industry. The pneumatic ball valve produced by Gongyi Hengchang pipeline equipment Co., Ltd. is composed of metal casting or welding, and the trapezoidal valve sealing ring is selected for the loose sleeve part. Under the action of the gland and bolt, the sealing ring is forced to deform between the outer wall of the expansion pipe of the pneumatic ball valve body for static sealing.

 Pneumatic butterfly valve

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