Main Features of Pneumatic Eccentric Ball Valve
The pneumatic eccentric ball valve uses a rotating valve chain to open or close the valve. Ball valves are easy to operate, compact, can be made in large diameters, have reliable sealing, simple structure, and are easy to maintain. The sealing surface and the ball surface are always in a closed state, making them less susceptible to erosion by the medium. This product is equipped with a single or double cylinder series two-action partial rotary valve pneumatic actuator. Controlled by a solenoid valve, it can achieve remote automatic operation. It fully utilizes the advantages of the BQ ball valve (users can also choose their own pneumatic actuator model).
Working Principle of Pneumatic Eccentric Ball Valve
The pneumatic eccentric ball valve consists of an electric actuator and a valve body. The double eccentric hemispherical valve structure utilizes the eccentric clamping principle to achieve braking, regulation, and closure via a transmission mechanism. The sealing pair is a metal-faced ring with hard-faced contact sealing. In the double eccentric structure, the valve core is located within the ball chamber when open, resulting in a large flow cross-section and preventing valve erosion. When closed, the valve core is also protected from erosion. During opening, the spherical surface of the valve core gradually moves along the valve seat, effectively removing scale buildup and achieving a reliable seal. It is particularly effective for mixed-flow transport where scale-forming solids easily precipitate. The selection of different alloy (or combined ball) bimetallic sealing pairs allows for applications requiring wear resistance, corrosion resistance, high temperature resistance, and stringent sealing.
