I manage a neighborhood pool. It has 2 ea Hayward Super II 1 hp pumps and Tagelus sand filters. I just overhauled both pumps. On pump has started blowing air from one nozzle. This filter has leaks in the control valve. I have lubed the o ring on the basked cover. It does not blow bubbles right after back washing but starts to do so a few minutes later.
Will rebuilding the control valve help? Is that just a matter of replacing o rings, gaskets, etc.
Help, please.
Jim in Texas
air bubbles
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