What Is The Primary Function of a Sump Pump Check Valve?
The primary function of the sump pump check valve is to make sure that the water being pumped out of the sump pump pit liner and through the discharge plumbing cannot drain back into the liner.
The sump pump check valve kicks in when the pump stops pumping and there is no more water being pushed up through the discharge pipe. Sump pump check valves, like all check valves, “flow sensitive” and rely on water in the line to open and close.
What Happens If A Sump Pump Check Valve Is Not In Place?
Without a sump pump check valve in place, all the water in the discharge pipe empties back into the sump pump pit liner. This causes the water level in the liner to rise. Higher water levels in the sump pit liner causes the pump to run more often, increasing energy costs.
A Sump Pump Check Valve Also Provides Other Protections
The sump pump check valve also prevents insects and rodents from possibly entering the impeller chamber of the sump pump through the discharge pipe. Insects, rodents and other large debris can cause clogging and pump failure.