After building my inground 30k gal pool last spring, I have noticed the cheap valves that came with the kit are already failing. In the fall I purchased Pentair 1.5" PVC, 2-Way Lube-Free Diverter Valves to replace the cheap ones.
I have noticed that once the pump stops, and after a little while, the chamber empties. So everytime the pump goes into it's cycles (usually 2 times a day for 4-6hrs) that it is empty. This can not be good on the pump.
Not sure why this is happening, maybe the pool is sucking the water back toward the pool.
I'm wondering if I should put a check valve right before the pump to stop this?? Has anyone done that?
Am I hiding another problem that may be in the system?