Usually we refer to many valves as gate valves. In fact, soft-sealed gate valves are also divided into front valves and rear valves.
The opening and closing of the soft sealing gate valve is the gate, the gate valve can only be opened and closed, and cannot be used for adjustment and throttling. The gate has two sealing surfaces. The two sealing surfaces of the most commonly used mode gate valve form a wedge shape, and the wedge angle varies with the valve parameters.
When the soft density gate valve is closed, the sealing surface can be sealed only by the medium pressure, that is, relying on the medium pressure to press the sealing surface of the gate to the valve seat on the other side to ensure the sealing of the sealing surface, which is self-sealing. Most gate valves are forcibly sealed. When closed, the gate must be forced against the valve seat by external force to ensure the tightness of the sealing surface. The gate valve of the valve is connected to the valve stem, and through the nut at the top of the valve and the guide groove on the valve body, the rotary motion is changed into a linear motion, that is, the operating torque is changed into an operating thrust.

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