Stem lift wedge plug valve, the switch is always frictionless, ensuring easy operation, zero leakage and long life of the valve.

1. Stem lift wedge plug valve, the switch is always frictionless, ensuring easy operation, zero leakage and long life of the valve.

When opening the valve, the valve core first moves upwards and leaves the valve seat, and then rotates 90° without friction until the valve opens; when closing the valve, the valve core first rotates 90° without friction, and then squeezes toward the valve seat until it is completely closed. During the valve opening and closing process, there is always no friction between the valve core and the valve seat.

2. Double shut-off and automatic valve sealing device (DBB function, equipped with ABV automatic discharge system).

3. There are end caps on the top and bottom, which can be quickly maintained and repaired online;

When there is medium in the pipeline, just close the valve to remove the bottom end cover, which can quickly remove hard particles such as sand and welding slag, and is convenient for valve maintenance and seal replacement.

Disadvantages of gate valve:

1. The gate always has friction during the opening and closing process, so the operating torque is large, and scratches are easily formed on the sealing surface of the gate and valve seat, resulting in valve leakage;

2. There is no self-checking leakage device, (even if this function is achieved by installing a small valve through two gate valves, the automatic detection function cannot be achieved);

3. For the medium containing particulate impurities, such as sand, deposited on the bottom of the valve, so that the gate cannot be fully closed, resulting in very serious leakage of the valve (this is a fatal disadvantage for gate valves).