4 MISTAKES Everyone Makes When Using COMPRESSION FITTINGS

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Glad to see you mention the marking of tightened fittings. It was mentioned to me over 50 years ago as a worthwhile habit and I have always done it. I then go around a job afterwards to check for the marks (bright red is my preference). It has only saved me once but it was in the loft of a 3 story house where the consequences of a leak couldn't have been much worse. My preference is to do an initial tighten of the olive with the pipe slightly (~1mm) pulled back from being bottomed in the fitting so that all the tightening force acts on the olive and isn't (after the olive grips the pipe) shared with the pipe pressing onto the shoulder in the fitting. I then open it up to see that the olive is seated happily against the fitting (lots of people don't seem to appreciate that the interface between the olive and the nut isn't sealing anything). I then apply potable jointing compound and firm to final torque and mark it. I also prefer copper olives to brass - usually involved bunging out the olives that come with most fittings.

Thank you for taking the time and care to make this. I'm better off for it now and can tidy up my project with confidence now! 😁

Amazing! I learned a lot from this video. (Been doing things wrong for over 40 years lol) Thankyou so much for educating an amateur.

Thanks for educating me I have never used joint compound, with compression fittings. Thanks again

Many thanks from across the pond--great information, well presented, & humorous to boot!

Me personally I found this video very helpful and useful! Have a project I'm working on right now and was preferring to use the compression fittings so I'm going to take all his tips! Thanks great vid

In all my years of DIY including working along side other trades including plumbers on refurb jobs I have never heard of this. Although I've never had a problem yet, it makes perfect sense and I'm all for good practice. Great video.

Hi, many thanks for all your advice. We’ve just refurbished our shower and want to say how helpful your plumbing tips are.

Top tips from Mr pipe man himself! I keep telling the Mrs, it’s essential to have some pipe lubricant next to the bed, for emergency plumbing situations!😎

very nice presentation, I'm fan. The tips are also worth watching & it's very well explained You had me with the tft tape. a Mistake that I would have made.

❤cool advice,ive used furnox joint compound in the past, the o 10:4 10:49 only trouble is it sets like concrete after a while,making it difficult if you have to remove a fitting. My favorite fitting is a yorkshire or end feed ,love solder

Thank you for the video James, even tho i started watching your videos 6 years ago when i started doing my LVL 2 Diploma in Plumbing and heating. I'd advise anyone getting into Plumbing to get Monument olive cutter, it can fit in tight spaces, saves you time and effort.

Cheers ... Jointing compound.. need to find that. But I always put a wrap or two of PTFE tape on the olive of new fittings, just in case there is a small discontinuity (Roger, Skill Builder tip). Another tip I find useful is clean the pipe before fitting, with fine grit sand paper or one of those cleaner wire brush tools. can make a difference. Lastly another over tightening danger: stress can build up in the nut then one day it might crack and all hell will break loose when least expected, has happened to me.

Very good advice and a well presented tutorial. Thank you.

I'm 62 and a Carpenter this has helped me so much NOW IM GOING TO GET THE OUTSIDE LOO AND KITCHEN SORTED THANKS ❤😂

Another tip, turn off your water when you go on holis

Well I managed 2 of the mistakes fitting a sink at the weekend. Noticed a drip on the floor today and then saw this video. I'll be taking it apart and refitting at the weekend, cheers for the tips😂

EXCELLENT advice. I am a hydraulic Engineer and I have spent most of my career training fitters how to avoid leaks in high pressure systems. I watched this video to find similarities. Everything you have said is bang on and CORRECT. In respect of under-tightening, we get the nut spun down to the point where it contacts the 'cutting ring' (Our ring cuts into the pipe - slight difference) and we refer to that as the 'fixed point'. That is the point at which all tolerances from threads, tapers diameter differences are allowed for. We then mark the nut and the pipe and turn 1&1/2 turns. That is our industry, yours may differ. We then put a high visibility mark on the pipe and nut. Before start up, all visual checks can be made easily. GREAT VIDEO

Caravan reference. Spot on. Exactly why I watched your video. Pipe leading to toilet is leaking from the top of the compression / isolation valve.