"I've used loads of these copper cuprofit fittings over the years and haven't had a problem yet. I've put them on central heating and mains up to 6 bar pressure (they're supposed to work up to 16 bar at 30 deg c or 6 bar at 95 deg c). They are more expensive then solder fittings but you more than make up for this with saving on time and effort and if done properly you won't have to go back putting right any leaks. Just make sure you clean the copper pipe end properly with wire wool leaving no swarf/debris/grease etc. Also mark the pipe 15mm in from the end so you can check that the fitting has been pushed all the way on. These Fittings can also be removed quite simply with appropriate tool. Provided they are not damaged or too old you can re-use them but I'm not sure I'd risk it just to save a couple of pounds."
"Used these to fit a new radiator. Space was very tight. Ideal as no soldering is needed which is always a problem when water is present. Only get one chance to fit so make sure pipe end is clean. very satisfied"
"I bought these to use on piping to a washbasin. They are much better than Yorkshire Fittings or Compression Fittings. No messing about at all, push the fitting on to the pipe and its job done. Even the Mrs could use these."
"Re-routing and installing extra rads. in old cottage, original pipe–work comes down from a very small void in ceiling surrounded by flammable material, therefore could not use either compression or solder joints, so was the perfect solution. Only black mark is that the Conex Release Tool I had previously does work with their new style joints and although Screwfix show one in the new catalogue [Autumn/Winter 2011] Part. No.95388 it cannot be found online to order!!"
"So easy to use, excellent quality product, no leaks, pipework looks excellent. Bought the removal tool but don't think I'll need to use it. Would recommend this over any other type of fitting. Particularly good for the DIY'er - if you've measured your pipes right, you can't go wrong! 10/10"
"I thought these were the best invention ever, just like the other reviewers, until the other day when one burst open and poured mains-pressure water down through a light fitting onto a newly-refurbished kitchen. Disaster! The elbow that parted was attached to a capped pipe projecting above the floor waiting for connection to the wc, which was pulled away from the wall slightly to decorate behind it. The pivotting motion and mains pressure inside must have fooled it into thinking it was being dismantled, with terrible consequences. I have gone back to compression fittings and Speedfit, which at least give a positive connection although they are clumsy to look at."