Why your pipes bang when you turn off the faucet and how to stop it
In short: Plumbing expert Richard Trethewey demonstrates how to install a water hammer arrestor to silence noisy pipes. This video provides a practical solution for homeowners dealing with the loud banging sounds caused by sudden water pressure changes in their home plumbing system.
When a faucet or valve closes abruptly, the momentum of moving water creates a pressure surge that slams against the pipe walls, resulting in the characteristic banging sound known as water hammer. Installing a water hammer arrestor acts as a shock absorber to dissipate this energy.
The installation process requires basic plumbing materials, specifically lead-free solder and flux for securing connections, along with a plastic pipe clip and a 1 5/8-inch screw to ensure the arrestor is properly mounted and stable within the plumbing configuration.
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Sources
- Summary by Intellect · source: How to Quiet Pipes With a Water Hammer Arrestor | This Old House
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