Question about Whirlpool 24 in. DU1100XTP Built-in Dishwasher

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Water hammer makes a loud vibrating noise when filling

The noise has got worse over time. It seems as though its probably water hammer where the water goes into the machine at the valve.

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Hey- most hammer is removed by simply replacing the water valve. Have solved this way many times. Exceptions required spring suppressors on lines to faucets. Valves run about 40-60$ and are easy to install. Let me know if this info helps- have more if needed- Thanks- Ed

Posted on May 13, 2010

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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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An easy fix for this would be to reduce the flow to the fill assy. by turning down the units supply valve from wide open to about half way open. A few more permanent solutions may include, The installation of a Water hammer damper device - installation of a PRV pressure reducing valve - Although not intended for this issue is an air charged bladder style expansion tank installed, this device has been proven to reduce water hammering.

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