Check Valve
A check valve is a plumbing device that allows fluid to flow in one direction only, preventing backflow in pipes.
Estimated value as of 2026 · Source: Lowes.com average retail price for plumbing check valves
Fun Fact
Check valves for everyday plumbing like 3/4-inch sizes can be found as low as $11 at some suppliers, making them an affordable DIY fix for backflow prevention.
Price History
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