knocking in hot water pipe in tub when turned on

Old 02-14-01, 07:14 PM
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why are the pipes knocking when the water is turned on? What can be done to fix it? Can it be done by myself? I believe the pipes are copper.
Old 02-14-01, 07:17 PM
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Location: Eugene, Oregon
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Check for a loose washer on the bottom of the stem, a loose washer can vibrate and make pipes knock, shut the water off to the house before you take the stems out.

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