Towards the end of the discharge process, the ballcock responds to the drop in water level and refills the tank. Should the float or valve fail and allow the water level to exceed the fill line, the water will pour into the overflow tube and out to the bowl (in the flapper valve type) or to an outside drain (in the siphon type). Although this wastes water, it avoids the flooding that would otherwise occur after a single-point valve failure.

 

These devices are sold at most hardware, plumbing supply, and home improvement stores.

 

l   The operation torque is greatly been decreased because of the eccentric structure and greatly increased the allowable pressure.

 

l   Adopt special surface treatment to improve the wear resistance and erosion resistance and service life; 

 

l   Large flow capacity, adjustable ratio reaches 100;

 

l   There is a shearing action between the ball and sealing ring in the moment of closing, which could shut-off the medium fiber and extrusion particulate matter. It is especially suitable for pulp and paper, sewage and other media containing fiber and particulate matter as well as for general medium;