The lines that go from the intake to the chlorinator and back in the outtake of my plumbing are connected by 1/4" ID X 1/4" MIP threaded barbs that seem to break very often. I've gone to the local hardware store for replacements, but they don't last very long due to the chlorine (I'm guessing).

Where can I get reliable replacement parts without having to buy a whole "kit"?

Thanks!