I have two return jets going into the pool, which are two separate PVC lines underground coming up to the side of the house at the filter. The plugs for the return jet are tapered and seems like they can only get a 1/4" seal in the jet fitting. They end up falling out and then the water pressure sends the water back up the return lines. I am worried about the water freezing in the lines once the plugs fall out. Of course no more antifreeze in there or dry pipes. What advice to do you have to plug the return jets?
The return jet fittings have an internal thread, then a short adapter with external threads and a very small taper for the plug. The jet directional nozzle connects that that short adapter.
The return jet fittings have an internal thread, then a short adapter with external threads and a very small taper for the plug. The jet directional nozzle connects that that short adapter.