Expansion Tank: Plumbing Tips

When water heats, it expands, and in a closed plumbing system that extra pressure needs somewhere to go. An expansion tank absorbs it, protecting your water heater, valves and supply lines. These articles explain how the tank works, when code requires one, how to check its air charge, and signs that it has failed. If your relief valve drips often, have a plumber test the expansion tank.

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Freddie the bluefrog holding a wrench