i'm currently using plastic barbed fittings with standard hose clamps on a solar pool heating system to go from a female threaded PVC fitting to black poly tubing. i have problems getting a good seal on the barbed fitting. i have tried different brands of the barbed fittings and clamps with no luck. i am now thinking of using a compression type fitting. does anybody have experience and/or luck with such fittings? any ideas are welcome. also, any ideas on whether a brass barbed fitting would work any better than plastic?
ps. the tubing is 3/4".