return line plugs
In order to operate my spa overflow properly I need to apply a small amount of back pressure to my pool return line. I have standard swivel type fittings on my 5 pool return outlets. I want to plug or reduce the flow on one or two. The ID of the return fitting is 15/16 of an inch. This will not take a standard pvc fitting. Are there special plugs made for these? I haven't had much luck searching the net. Any suggestions?