Call Today


Glover Maintenance Blog

BEWARE of the Water Hammer

When people hear thumps or bangs in the middle of the night, the first thing that comes to their minds is “ghost”; when they should be thinking about water hammer. Water hammer occurs when water traveling through the pipe stops suddenly by a shut off valve. The water slams into the shut off valve with forces of 250/400 PSI, reverberating backwards from the valve throughout the entire pipe, causing a loud thumping or banging sound. If you flush your toilet, run your sprinkler system, use the dishwasher, turn on the shower or washing machine and you hear a thump or loud vibration, you probably have a water hammer problem.


Water hammer is like small explosions within a pipe, which can cause extensive & expensive damages. If water hammer is not fixed they can damage the water heaters, valves, washing hoses, fittings, fixtures, toilets, backflow, ect. Water hammer is not prejudiced; they can occur in cold and hot water supply lines. Water hammer can also cause burst pipes & water leaks without any warning.


Next time you hear a thumping sound or loud vibrations in the middle of the night, please contact your local plumber.

Leave a Reply

Your email address will not be published. Required fields are marked *