Does anyone know a way to patch the small tubes in solar water panels (for pool and hot tub). I am talking about the small, black plastic tubes that run between the 2" pipes.
Please, no well-meaning suggestions. I need a way that has been proven. For years I cut out a section of the tube and used a #14 stainless steel screw in each exposed end. Those patches lasted a couple of years and then I would have to recut the tube and put the screw back in. Now I have one panel that defies me.
It leaks no matter how many times I patch it. It might be an age thing with my panels.
A #14 screw is actually just a little small but a 1/4" lag screw seems to be too big and I think it stretches the tube. It leaked the worst. Adhesives don't work. I even tried a wood dowel that fit tight while dry and swelled so big I could not pull it back out of the test piece. No luck on the roof. It leaked just like the screws.
Has anyone tried the rubber plugs? I think they come in different sizes but I can't find the size for my panels. Guy at the local solar place is not helpful. He only sells wholesale. I am not sure I should look for a source for the plugs. They might just be a waste of time and money.
Help please, hot roof and cold pool.