How often do backflow preventer valves need to be replaced?

There isn’t a fixed replacement interval for backflow preventer valves. Most are replaced when they fail a certified test, show leaks, won’t hold pressure, or are corroded or cracked. Annual testing is common in many towns, and a licensed plumber will confirm if repair or full replacement is the best option after inspection in Glendale Heights or nearby Elgin.

Quick checks:

• Visible leaking or constant dripping
• Test failure or low pressure hold
• Cracked body or seized shutoff handles

Updated: 2025-12-24

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