What it means
A check valve opens when forward pressure pushes the disc or flap aside, then closes if flow reverses. Sump pumps, well systems, and hot water recirculation lines depend on check valves to stop back-drainage.
A failed check valve can let water return to a sump pit or allow hot water to cool in a loop, wasting energy and causing noise.
Why it matters in Santa Cruz County
Crawl spaces in Capitola and Pleasure Point flood during king tides and heavy storms. Sump pump check valves in low-lying lots prevent discharged water from flowing back into the pit when the pump stops.
Homeowner tip
If your sump pump runs constantly or you hear thumping in pipes, ask about check valve condition.
Related Wade's services
Related glossary terms
Also explore the Septic Glossary or call 831.225.4344 with questions about your property.