Technical Specifications

Chief Features

During the opening and closing of the valve, the sealing surface of the valve body has no contact with the sealing surface of the sliding vane. Therefore, the sealing surface has no friction and wear, the service life of the valve is long, and the opening and closing torque is small

During the maintenance of the valve, it is not necessary to remove the valve from the pipeline, but only to remove the valve bottom cover and replace a pair of slide plates, which is very convenient for maintenance;

The valve body and plug are full port, the medium has no flow resistance when passing through the valve, and the pipe can be cleaned through the ball, which overcomes the shortcomings of the reducing valve;

The valve is equipped with relief device (optional) to prevent abnormal pressure rise in the valve chamber and check the effect of the valve after the valve is completely closed;

The sealing of the valve is achieved by the sealing ring around the valve. It has particular protection of swallow-tailed sink and fixed sealing rings.

Operation Principle

When the plug valve is fully open, the channel is in alignment with the channel of valve body,which can ensure ideal and lowest pressure drop.

When the handwheel is turned,the plug will rotate toward the closing direction,and at the same time draft the rotation of the valve disc by 90°.When the handwheel is turned further on,the plug will pressured down,and make the valve disc open to two sides,so that the valve disc will be firm contact with the valve seat and close the valve.

When the handwheel is turned inversely,first of all the plug will move upward,and the valve disc and valve seat will be separated,second the handwheel shall be turned further on,till the valve disc is turned by 90°driven by the plug,finally the channel of plug will be in alignment with the channel of valve body,the valve is fully opened.