I'm hearing more and more about hep2o fittings letting go within 2 years after the '10 year warranty'. Am I worried? No, I never install plastic pressure pipework. But saying that, I do feel for the unfortunate people who, through no fault of their own, experience flood damage caused by such failures. I believe, for the cost of installing pipework, you'd expect it to last a lifetime. Anyone who works on boiler repairs, knows how o-rings degrade and lose their flexibility.
Rant (if you would call it that), over.
James.
We work for a number of National Developers and use loads of Pushfit, in particular Hep2o.
We follow manufacturers guidelines
We don't mix Plasitc Pipe / fittings manufacturers on the same system
We pressure test before handover
We have very lfew issues with plastic.
The majority of problems with Pushfit are down to installer error (no insert, pipe not pushed fully in, scored pipe, dirt and grit under the "O" ring)
We have not heard of fittings "letting go" if installed correctly.
Also are you sure you are talking about Hep2o and not confusing with Plastic Plumbing in general, (because there is some cheap rubbish about) because you are quoting a 10 year warranty, Hep2o carries a 50 year warranty, including the "O" rings.