Application:
This valve is used to prevent the adverse flow of the medium and excessive large pressure in the pipeline.

Features:
1. This is a automatic valve, which is opened and closed by the medium and the reversing flow. The higher the pressure is, the better the sealing is.
2. The construction is more reliable
3. As there is no weight on the shaft in the open position, all the forces of the disk is balanced, it reduces the flow resistance.