How does a check valve work? In this episode of Spec. Sense, Vance explains how check valves act as gates, only letting water flow in one direction. Check valves are one way valves, that prevent water from flowing back down a pipe after its been pumped. You'll see how a check valve is used with a sump pump and a condensate pump.

Buy check valves online: https://www.amresupply.com/catalog/Ch...

Learn how to choose and maintain a sump pump:    • What Size Sump Pump Do I Need? | Spec...  
Learn how to troubleshoot and replace a condensate pump:    • Condensate Pump Replacement & Trouble...  

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