Eccentric Hemisphere Valve EQ640 Pneumatic
The eccentric semi-ball valve EQ640 produced by Dazhong Valve Group is pneumatic. The ball and valve seat of the pneumatic eccentric ball valve are completely separated, which eliminates the wear of the sealing ring and overcomes the problem that the traditional ball valve seat and the sealing surface of the ball are always worn. The V-shaped notch has a cutting function . Since the structural principle of the pneumatic eccentric hemisphere valve is very similar to the operation form of the triple eccentric butterfly valve, some people call the eccentric hemisphere valve a butterfly valve with a spherical disc.
The fluid resistance is small, and the full-bore ball valve basically has no flow resistance. The structure is simple, the volume is small, and the weight is light.
It has two sealing surfaces, and the sealing surface material of the ball valve is currently made of plastic, which has good sealing performance and can achieve sealing. It has also been used in vacuum systems.
Easy to operate, quick to open and close, only need to rotate 90° from fully open to fully closed, which is convenient for long-distance control. It is easy to maintain, the structure of the ball valve is simple, the sealing ring is generally movable, and it is more convenient to disassemble and replace.
When fully open or fully closed, the sealing surfaces of the ball and the valve seat are isolated from the medium, and when the medium passes through, the sealing surface of the valve will not be eroded. It is suitable for a wide range of diameters ranging from small to several millimeters to several meters. , can be applied from high vacuum to high pressure.
Because the ball valve has wiping properties during opening and closing, it can be used in media with suspended solid particles.
