Traditional knife gate valves perform well in unidirectional flow control, but there is often a risk of leakage when faced with bidirectional flow. On the basis of the traditional general cut-off valve, through research and development, the product has been upgraded, and a new product “two-way soft seal plug valve” has been promoted to ensure that the efficient sealing effect of zero leakage can be achieved in any flow direction.

The new design changes the installation of the sealing rubber, replacing the groove rubber strip on the sluice gate valve body with an elastic rubber, which is wrapped around the valve body. This advantage is to solve the problem of difficult replacement after sealing loss, if the sealing loss, can be replaced on site, easy installation, easy disassembly and maintenance advantages, to minimize the impact on the production schedule.

In addition, the single sealing rubber strip is changed to two-way sealing and double-layer sealing strip to solve the disadvantages of not being pressurized in reverse, whether the flanged gate valve plate is stressed in the forward or direction of pressure, the elastic deformation of the rubber can be closely connected with the valve plate, to achieve two-way sealing, improve sealing, and achieve zero leakage.

Our new product bidirectional sealing knife iron gate valve is suitable for tap water, sewage, water treatment industry, the main feature is floating self-sealing, bidirectional pressure, can achieve bidirectional sealing, high sealing. It is not easy to leak out, has a small installation space, low working pressure, not easy to accumulate debris, high pressure gate has no vibration, no noise, linear channel, small flow resistance, no pressure difference loss, when the gate is closed, the reliable medium pressure pushes the gate pressure to the other side of the seal gate valve seat to ensure the sealing surface. This innovation not only greatly improves the durability and reliability of the valve, but also significantly reduces the energy loss and environmental pollution caused by leakage. After the appearance of bidirectional sealing knife gate valves, a large number of general cut-off valves have been replaced by them.