We have since 2years all networked underground in our garden with Gardena. I also had a hatred for the connector, as it does not appear to have been close and I partly the garden washed away and then just dig in the mud was allowed to "fix" the leak to.
When "Fix" but it occurred to me that I had pushed the pipe system is not completely (about 6-8cm) in the opening of the connector but only to the first stop (ca.4cm), therefore we were unable to close the story.
Meanwhile, I have no "failures" more and the system runs smoothly ...
(My neighbor's heating engineers and has looked at the Gardena things with me and then also equipped his garden with Gardena connectors and sprinklers, but he has taken PE pipe from his farm, is Weil's cheaper and will last as well. Otherwise, everything Paletti.)