1) A sealing structure consists of two parallel shutters and a wedge-tightening device, which is improved design of traditional wedge gate valve.

2) The components of valve sealing mechanism are separated, which enables the sealing retain when transmuting caused by the temperature changes, and prevent jam where swelling in high temperature

3) The sealing surface of the valve adopts abrasion-resistant and anti-corrosive materials which can lengthen the life of the valve.

4) In high temperature pressure, the disc on inlet side can be designed in pressure relief style which can avoid abnormal pressure rising in cavity caused by temperature changes, thus to ensure safety.

5) The valve adopts full-shut structure, which has good protection function and can be used in all weather.