Used on the pump outlet of a water supply system to prevent medium’s back-flow, water hammer and water shock. It has three functions as an electric valve, check valve and water hammer remover. It is capable of improving the safety and reliability of the water supply system effectively through integrating the technical principle of slow-open, speed valve, slow-close, and removing water hammer and preventing of both pump-starting and pump-stopping water hammer. The gate can carry out open-close automatically upon the operation rules of the water pump just by operating the pump to open or close electrically. 300X Slow-Closing Check Valves features by the big flow and small pressure loss, reliable sealing performance, easy installation, debugging and maintenance and long duration.

 

Characteristics:

Able to prevent water hammer and water attack from occurring, getting to the slow closing and silencing effect. As a check valve capable of adjusting and controlling the open-close speed, it can make a best open or close speed on the site, when pump is started or stopped.

 

Principle:

After the pump stops, the medium flows reversely, the pressure of the valve upper cavity is bigger than that of the lower cavity to have the disc fall off and closed. while the speed controlling the back-water to enter the diaphragm can adjust the speed for the valve to be closed so as to get to the slow closing effect.

 

Main Parts and Material:

Body & cap