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What is the normal reading on your pressure gauge? It is a possibility that the gauge itself is broken. Those pressure gauges do not last very long and usually break within the first year. I have found them for as little as $13.00. You may try that first since backwashing was the correct thing to do when the pressure went up.

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17y ago
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Q: How do you get the pressure down on a sand filter pool pump if you have backwashed and it hasn't changed?
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