The eccentric half ball valve adopts the eccentric locking principle and achieves the purpose of gate tightening, adjustment and closing through the transmission mechanism. Its sealing pair adopts a metal ring with a hard surface contact seal. When the double eccentric structure is opened, the ball is located in the ball chamber, which effectively prevents the valve from being washed and achieves reliable sealing.

The body adopts an integrated full-diameter structure design, which is compact and has a large flow area. The flow resistance after full opening is very small, which is basically equivalent to the pipeline, and the medium is not easy to deposit in the valve cavity.

After the valve is fully opened, the ball crown is hidden in the inner cavity of the valve body and is not easily directly washed by the medium, so that the sealing surface of the ball crown is well protected. The edge of the ball crown adopts a scraper structure design, which can clean the dirt around the valve seat sealing surface when closed, and has strong cutting ability.

It adopts a movable valve seat structure with an internal adjustment device. When the valve is used for a period of time and the sealing pair is worn, the preload between the valve seat and the ball sealing pair can be readjusted through the adjustment device to restore its sealing ability.