W
Plumbing TermWater Hammer
/ˈwɔːtər ˈhæmər/
A loud banging noise in pipes caused by sudden changes in water pressure.
Full Definition
Water hammer is a loud banging or hammering noise in pipes caused by sudden changes in water pressure or flow. This occurs when fast-moving water suddenly stops or changes direction. Common causes: Quick-closing valves, high water pressure, loose pipes, and waterlogged air chambers. Solutions: Install water hammer arrestors, reduce water pressure, secure loose pipes, and drain air chambers.
Common Usage
“The water hammer in the pipes was loud enough to wake the whole house.”
Did You Know?
Repeated water hammer can damage pipes, fittings, and appliances over time.