expanding gate valve|What is the difference between a knife gate valve and a gate valve
01 Jan

expanding gate valve|What is the difference between a knife gate valve and a gate valve

There are many types of gate valves, including soft-seal gate valves, hard-seal gate valves, etc., and knife gate valves belong to one of them. According to different driving modes, knife gate valves are divided into electric knife gate valves and knife gate valves. Knife gate valves have hard seals, soft seals, single-sided seals, double-sided seals and other material seals.
Compared with general gate valves, the structure of the knife gate valve is simple, the opening and closing part is a gate, and the movement direction of the gate is perpendicular to the direction of the fluid. It is small in size, flexible in operation, and easy to install. It is more suitable for media with higher consistency and solid particles.
We can see from the name that the knife gate valve mainly relies on the knife-edge gate to cut off the medium. The gate has two sealing surfaces, forming a wedge shape. The gate can be made into an integral rigid gate; it can also be made into an elastic gate that can produce slight deformation and improve the sealing performance from the process. To sum up, compared with general gate valves, knife gate valves mainly highlight the following product advantages:
1. Good sealing effect, U-shaped gasket has good elasticity.
2. Full-diameter design, strong passing ability.
3. Good brake-off effect, can effectively solve the leakage phenomenon of media containing ice, particles and fiber after brake-off.
4. Convenient maintenance, and the seals of the valve can be replaced without removing the valve.

Tags: expanding gate valve through conduit gate valve knife gate valve

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