The through conduit knife edge valve is also called manual goggle valve. It is a kind of valve that the gate and the valve seat are always in close contact and sealed. Its principle is that there is a circular opening with full bore on the gate. Through the opening and closing of the gate, the circular opening on the gate is completely separated from and consistent with the flow channel.

The advantages of through conduit knife edge valve are that the valve body has no groove, the medium will not jam, and it has full diameter flow characteristics, so it is suitable for the use of powder particle medium in the pipeline.

The sealing structure can be divided into soft sealing structure and hard sealing structure.

The through conduit knife edge valve has the characteristics of precise structure, good process and compact structure.

The sealing valve seat is designed with movable structure. It has the functions of anti-wear and automatic compensation, so it has a longer service life.

In the process of closing and opening, the valve seat keeps close to the gate, which makes the opening and closing force of the valve stable and has the characteristics of cutting off the medium. Equipped with handwheel, it is easy to operate the handwheel directly to open and close the valve.