I have a 50 year old plaster pool without an auto fill valve. I hoping in the near future to re plaster, tile and upgrade the copper lines to PVC but that's when I have spare $10k laying around.
Anyway, I'm planning to re plumb in the pool pump house and I had an thought.
Could I plumb in a water line via a 'T' to the return line and controlled by a ball and check valve? This way, instead of throwing a dirty water hose in the pool, I could open the valve up and fill er up. I'd still have to monitor the water level when filling but would make my life a step or two easier.