Double sealing knife gate valve is mainly used in water works, sewage pipes, municipal drainage projects, fire pipeline projects, and industrial pipelines on the minor non-corrosive liquid, gas, used to cut off and prevent the media backflow protection device.

But in actual use, there are often some problems, the first is only one-way pressure, in some environments, in Y or W pipeline, the medium is fully transported without a problem, the valve is all open, but when the transmission to one of the pipelines, the other pipeline valve needs to be closed, this time the disadvantage of one-way hard sealed valve appears, the valve can not reverse pressure, It keeps leaking.

Secondly, rubber is a consumable, easy to damage, the traditional valve body rubber strip is easy to fall off and damage, spend a lot of time to repair, resulting in affecting the production process. These problems are often very common, with the increase in demand, we are looking for a way to solve, in this case, we developed a new process to solve this problem, launched a new product: Bi-Directional seal knife gate valve.

The principle of bi-directional soft seal electric knife gate valve is mainly in the processing of sealing rubber and sealing rubber placement slot. The change of these two processes will change the grooved rubber strip on the original valve body to the elastic rubber wrapped valve body, and the replacement can be completed on site after the change, which is more convenient and minimized the impact on the production schedule. It uses the elastic properties of rubber to produce a small amount of deformation compensation, so that the valve to achieve a good sealing effect. When the valve plate is subjected to forward or reverse pressure, the elastic deformation of the rubber makes the valve plate and the rubber tightly pressed together to achieve the effect of zero sealing.

The upgraded big size knife gate valve / wafer knife gate valve has the obvious advantages of not easy to leak, small installation space, low working pressure, not easy to accumulate debris, high pressure gate no vibration, no noise, linear channel, small flow resistance, no pressure difference loss, reliable medium pressure when the gate is closed to push the gate pressure to the other side of the valve seat to ensure the sealing surface, small structure volume, light weight and so on.

Jinbin Valve is a valve R & D manufacturer for 20 years, producing high-quality large-caliber metallurgical valves, if you have related needs, please contact us below, looking forward to working with you!