Sell RO plastic fittings of various sizes 1/4 ", 3/8" Or combination 1/4 ", 3/8" & 1/2 ",
Model Quick Fitting (fitting plug) .. To install enough hose plug / plug into the fittings.
To release the hose, pull out the blue clip at the end of the fittings, hold the ends of the fittings and pull the hose. Hose will be interested easily. Do not be forced when pulling the hose because it will damage the inside of the fittings.