Two way flow hard impact hard seal ball valve is a patented product developed by Hunan Pump Valve Manufacturing Co., Ltd. based on the accumulated experience of valve design, manufacture, use and maintenance over the years. The valve can not only be reliably cut off under positive pressure, but also can be reliably sealed when the reverse pressure or reverse pressure is much greater than the forward pressure. Using the principle of hemispherical valve, butterfly structure shape, butterfly eccentric hemispherical valve, so as to have: small volume, light weight characteristics; and has: two-way hard seal, seal friction small, durable, easy to open and close, so the cost performance is far higher than the hemisphere valve.

1. Main types: the main types of the valve are: worm gear, electric, pneumatic, hydraulic, among which pneumatic valve and hydraulic valve are suitable for occasions with pressure air source and pressure liquid source.
2. Working principle: the main function of the two-way flow valve is that it can seal well under the positive pressure, and can also be well sealed when the reverse pressure or the reverse pressure is greater than the positive pressure. When the positive pressure acts, the medium pressure pushes the valve plate to move forward and the valve stem deforms. The sealing surface of the valve plate is close to the sealing surface of the valve seat to transmit pressure, which pushes the valve seat to the valve body step to make it well sealed. When the medium of the valve seat is pushed backward, the pressure of the valve seat is pushed backward.