How do I insert barbed connection fittings into tubing?
In cool weather, pour hot water (140 degrees F) on the end of the tubing to soften it. Then the barbed insert will be easy to insert. We use an old thermos full of hot water but an old bucket would work well. As soon as the cold water flows through the connection, the tubing will shrink to a fit so tight that you should not be able to pull it apart. Push the fitting into the tubing past all barbs for maximum strength.
