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What causes both hot and cold water from kitchen tap to pulsate as if getting a breath. This happens at all times of day and is most noticeable at half to full flow.

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    Is it a fast splutter, or a slow steady change of pressure like a throb? – FreeMan Nov 23 '20 at 12:29
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    Are you on a well or municipal water supply? Also, do you have a pressure reducing valve in the system? – George Anderson Nov 23 '20 at 14:15
  • Sounds like a pressure tank that is waterlogged or lost it’s charge. – Ed Beal Nov 23 '20 at 14:53
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Sounds like water hammer. I had a similar issue with mine. Your local hardware store should carry a device you can install on your water lines that basically has a little expansion volume to reduce the effects of water hammer. Easy to install, solved my issue.

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