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Fix Your Compression Fitting Mistakes
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- Опубліковано 18 сер 2024
- Common mistakes using compression fittings in household plumbing.
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As a plumber for 46 years I have never yet used PTFE on a compression joint. Manufacturers of compression fittings usually state that nothing needs to be used on their fittings but I was taught to use jointing compound on them just in case there are any defects in the pipe. It has served me well. It is also virtually impossible to cross thread one of these fittings but I do agree with you in respect of over tightening.
I think jointing compound and ptfe on the olive serve the same purpose really. Thanks for watching!!
As a plumber I fixed leaks over compression fitting with with teflon and other stuff on it. Nothing is necessary over these fittings. Everything else causes more problems
@@TheDiligentDIYer1759PTFE has no place on an olive. If jointing compound doesn’t work then you need to cut back and replace the pipe and olive. But then, you are talking DIY 🤷🏻♂️
Good tip. My compression joint has a small leak and I was about to tighten more. I will put tape or joint compound around the ring ("olive").
Your giving some very good and in-depth advice on the things a lot of diyers get wrong, keep them coming
Thank you, very appreciated! Thanks for watching!
Spot-on advice. Fixed a few leaking olive joints that could not be cut off this way. Some redundancy on new compression fittings with ptfe tape in my opinion also does not hurt.
Thanks for watching!
All my life I've been using PTFE tape incorrectly. No wonder I always get leaks. Just completed a complicated renewal of an outside tap. So far no leaks and I don't fancy taking everything apart to remove/replace the tape I've "lathered" on. However if a leak should appear then your hints will come in handy. Thanks and keep up the good work.
Glad to hear it! Thanks for watching!
Holly shit!!! Wait you put it backwards to tighten???? Makes sense but I'm scared.
The PTFE paste on the olive did the trick for me. Thanks for the video!
Glad it helped! Thanks for watching!
What about putting the PTFE on the pipe before you put the olive on so it will be under the olive?
I appreciate the Teflon-on-the-olive tip, sir. Thank you.
Glad you liked it, thanks for watching!
My grandfather told me a trick to always do with any threaded thing, be it a bolt and nut, pipe fitting, etc. Always do a couple turns in the opposite direction. This way the threads will wind properly and won't get stuck in a bad bind. After all, the threads might not be perfect. could be some micrometer differences, etc.
Yes absolutely, turn backwards until you feel it click into the thread, then go forwards. Thanks for watching!
The best technique I know of is liquid sealant between the pipe and the olive, ptfe tape on top, and a smear of liquid sealant on top of that.
I have literally never done this on a new joint though, only repairs. For new installations liquid sealant between the pipe and the olive is a must for me, and just a slight smear on the olive but that tends to just happen anyway. Tape probably doesn't help unless there are scratches in the metal or the pipe is being wiggled, but if you expect wiggling you should be enduring there is no wiggling or using a different piping method.
Nice basic video, short and to the point. Could probably mention that ptfe tape on a thread helps with tightening, but that you should not need that much tightening on a compression fitting.
Thanks for sharing and thanks for watching!
@@TheDiligentDIYer1759 Hmmm... I should mention that doing heaps of generic replies like that (took a peek through other comments) is a bad idea, it comes off as extremely desperate. If you are just trying to get lined up for some sponsorships then I get it, but otherwise stop listening to whoever told you to do that. It's the same as anything else, say something if you have something to say.
Good videos. Clearly and calmly presented, thanks.
Just one point about PTFE tape on the thread of a compression joint. It does help with 22mm joints as it allows the nuts to be tightened more easily without the threads ‘sticking’. Just done a load of them like that and no leaks, after many leaks without the tape. Will try taping the olive if I get really stuck though.
Thanks for watching!
Yes… that is true, push fit fittings are bulky, when it comes to fitting a new kitchen sink, bath ect, perhaps; And it could give that unprofessional look. But the good news is… they never ever leak.
i suppose it all depends on the plumbing job undertaken.
At the end of the day… Professional plumbers will always use compression fittings, regardless.
Thanks for replying.
Thanks for watching!
Tape on the olive makes so much sense, can't believe I've been doing it wrong all these years!
Glad it helped! Thanks for watching!
Always remember reading a comment by a plumber that he could spot amateur work by the PTFE tape on compression threads.
Yes absolutely a good way to know someone doesn’t understand how the joint works
I understand how the joint works, but I'm still putting tape because i had to cut the old one off due to corrosion. In this situation the tape is not to keep the inside water from coming out, it's to keep the outside water from going in. I'm hoping the tape prevents the nut from getting drips in the threads over the years and can actually be removed in the future when needed.
I just added some teflon tape around the olive to try to fix a super small amount of wetness that was showing up in my replacement shutoff valve I just changed under my bathroom sink. No amount of extra tightening worked (as you pointed out) but the tape seems to have worked. No more moisture after turning the water back on! Thank you for this video!!
Glad it worked for you, thanks for watching!
Good idea, you think that would work with heating fuel, like house oil, passing the filter 1/4 line. I'm thinking the pro before me over tightened the seal. Over time could the drip stop? Unravel next time I get to see my dad. We'll investigate with more information. Working with the Teflon Tap for 10+ years welder repair shop, I could apply the same principal to house heating oil connections. Never thought about the Bud (Olive) to seal.
Thank you! I believe PTFE is resistant to oil, so should be fine. Thanks for watching!
Thanks for the Advice, i overtightened a compression fitting and will try that later 🤞 thanks for the video👍
Glad it helped, thanks for watching!
All good advice the PTFE on the olive is something my grandad taught me...if you really get stuck use some ' rector seal true blue ' it what us industrial maintenance guys use ....just don't get on you're clothes or you'll have an angry missus.
Thanks for watching!
Very interesting. I need to replace a boiler fill loop because one valve has broken in the closed position. This means I need to deal with pipe and olive and everything I've seen never mentions leaving the old olive in place...the part that showed leaving the over tightened olive in place and supplementing with ptfe tape makes me think I could do this myself.
Yep you could leave the old olive in place, or you can remove it either using an olive puller or a hack saw. Definitely one you could tackle yourself. Thanks for watching!
@@TheDiligentDIYer1759 Thanks for the reply. On my last check I noticed something by only laying on my back with a torch. The screw inside the stop tap handle of the fill loop was loose. Previously I thought the handle moved in the way it did because it had seized shut and then severed to the switch when I turned it. Tightened the screw - the water flowed into the boiler. My kind of 'fix' :thumbs up: Subscribed btw.
When it comes to compression fittings, there is a knack when tightening the compression nut for securing the olive ring that slides onto the copper pipe. If it it’s not tightened in the proper manner.. the joints will leak; as my sister found out.. when she had a new bathroom fitted, by so-called professional plumbers. The joints started to leak underneath the wash basin. My dad had to pay a visit and sort it out. With push fit that never happens. Push fit fittings are very convenient. I’ve had no problems so far. The tap water that runs through the copper pipe, will not affect the rubber ring inside the push fit device. It probably would if there were chemicals added to it perhaps. Although there is chlorine added to tap water; i don’t know if that would have any effect. That’s the reason why plumbers advise householders, never to put any cleaning agents in the cistern, where there are rubber washers.
Thursday pm 8th February 2024. Southampton England 🏴
Thanks for watching!
Thanks for the video! Maybe I can turn my indoor swimming pool, back, into the kitchen it was earlier this week!
You’re very welcome! Thanks for watching!
Brilliant. Thanks mate.
Glad it helped
Great video !! thanks
Thanks for watching!
Good sharing experience with people.
If I use Teflon tape is it OK? On air compressor line from cylinder head to the tank
Thank You! I believe they are the same thing, teflon just being a brand name and ptfe being the chemical name. Thanks for watching!
Ironically we had a plumber in 6 years ago to completely refit our bathroom and I’m not even kidding this is exactly the same thing he ended up doing - putting ptfe all over the threads of the fitting body and it just looked a bit sloppy. Just don’t understand why some do that as like you said the sealing happens between the olives and tapers on the fitting and nuts.
That’s terrible work from a professional! Thanks for watching!
Ptfe tspe is not needed fir compression joints.
It isn’t required, but definitely reduces the chance of a leak. Thanks for watching!
People don't understand what PTFE does. It does NOT seal. The threads (on a threaded joint) deform around each other to make the seal. The PTFE is there to lubricate that process. Therefore, on a compression joint, where the threads do not deform to create the seal, there isn't much point in applying PTFE. Applying it to the olive is nothing but a bodge, but can help cure a leak.
Best tip I've found is to tighten to finger tight (great tip on back'ds first in the video), then ensure you tighten the nut through a turn and a 1/4. Make a mark on the nut with permanent marker to keep track of how far you've tightened it.
Good tips, thanks for watching!
Could PTFE Paste gum up stuff down the line when the excess is washed downstream?
There shouldn’t be any inside the pipe, you’re putting the paste on the olive only, so it won’t get into the water. Thanks for watching!
Yes
This help me a lot 😍😍
Glad to hear, thanks for watching!
What about putting the PTFE paste on the pipe before you put the olive on so the paste will be under the olive?
I think paste under the olive would also be okay, thanks for watching!
Used compression fittings for gas and water, and never used tape or compound on any of the fittings.
Thanks for watching!
Hi, can I put jointing compound between the copper pipe and the olive or inside of olive? Imperfections or residues on the copper pipe causes the oliver not seal properly so the leak.
Before watching your video, I had to fight to fit a compression fitting by putting a lot PTFE on the threads. After wasting two olives, I stopped leaking.
It’s okay if some jointing compound gets under the olive, in fact it would be hard to not get any under. I wouldn’t put any ptfe on the threads for a compression joint, it will make it harder to do up and doesn’t do anything for leaks. Thanks for watching!
What is everyone's issue with PTFE tape on an olive? It has stopped leaks for me in the past.
Thanks for watching!
Ptfe on the thread helps lubricate the nut and makes it easier to compress the olive correctly which should never have anything added….. ! One wrap will do. Some poor quality brass olives don’t compress very well…. esp if there’s a metric fitting on an imperial pipe.
Thanks for sharing your opinion
does it help lubricate it at all on the thread and is it different on chrome fittings?
I don’t think lubricant on the thread will make any difference, same for chrome
I think with compression fittings you shouldn't use any PTFE. The most important thing is cleanliness. Make sure all the sealing faces are clean and smooth. Use scotch brite or wire wool on the fitting sealing face and the pipe - but then make sure you clean any debris out afterwards. Use decent quality parts - Pegler for me. Then just finger tight until it stops, then a full turn with a wrench. Switch the water on and see if it leaks. If it does then just a small amount of tightening should do the job. I find really small leaks - like a weeping joint, will self-seal after a day or so.
A good seal is made by two clean sealing faces, jamming PTFE tape on a sealing face is not a good idea - PTFE tape is for BSP threads, not olives.
It is a contentious issue, but I’ve never had a leak when putting PTFE tape on an olive, but seen plenty of leaks where there isn’t any.
Absolute agree on buying quality kit though, Pegler is also my go to. Thanks for watching!
In 50 years of DIY copper plumbing, I've never used PTFE on compression fittings - just the supplied olives/ferrules. Today I met my match in a 1/4" copper tube fitting. Still leaked after 2 separate attempts with new olives and polishing. After looking at this video, I tried a couple turns of PTFE tape over the olive, and OMGosh, a dry fitting at last! Thanks for this tip, DD - it worked for me!
The "shouldn't" and the "can't" are two different things. PTFE is a great help for our less than perfect fitting world.
GO for it. Since no harm will come from it's usage. Doing this for a few decades. Nowadays getting some PTFE on the olive is a second nature. A couple of turns make life way easier. Seldom have to go back. ;-)
So what if water will follow through the tread of connector?
If you’ve got an olive in there, it definitely won’t come through the thread
Probably a problem with the olive, water has to get past the olive to make it to the thread which is why adding PTFE tape to the thread won't help, in fact too much PTFE tape on the thread just makes it really hard to tighten/remove. Personally I believe PTFE tape on the thread is unnecessary.
Check that the pipe and and the olive aren't damaged.
Use jointing compound on the olive such as liquid PTFE tape or the gel although the liquid stuff is better. Then use a small amount of PTFE tape, most DIY'ers use way too much, 6-8 times round is plenty for most compression joints, but make sure you go round the correct direction as described in the video. Too much PTFE tape (12+ time round) makes it very hard to tighten the compression joint and will compress the olive too deep onto the pipe making it almost impossible to remove later and in the worse case damage the pipe.
Do not over tighten, when you fill the system with water there may be small leaks at the compression joints, tighten gently until the water stops leaking. If you find yourself using a large amount of brute strength then you've used too much PTFE tape.
Hope this helps, not a plumber, but I find this works well.
OK thanks for tip information 👍
@@simonboulton978 oops, PTFE tape first, then jointing compound. Just spotted the mistake.
X1.75 thanks
Thanks for watching!
Why wouldn’t you tape the ferrule on a plastic tube? Had this conversation with an old plumber. Told me not to use tape it will pop off. Because there needs to be an insert that goes into the plastic piping, so the brass ferrule has something to grab.? I taped it and it stopped weeping and I tightened it. So it shouldn’t pop off? Man, def conflicted rn.
Sorry I’m not sure what you mean. Plastic pipes need inserts for any fittings used on them. Thanks for watching!
Always( Copper) olives they are softer than brass and will compress better into its compression fitting housing 100 % 👍👍
Yes good point, you don’t see so many copper olives though, I guess they are slightly more expensive perhaps. Thanks for watching!
@@TheDiligentDIYer1759 Hello Mate,the copper olives are easily sourced from Plumbers merchants.May be a couple of pence more than brass,but in my opinion 100% worth it counting the cost of leaks under flooring etc. Measure twice cut once! 👍🤝
Why not tape both?
Taping both the thread and olive? Taping the thread would make it harder to tighten up the nut and compress the olive, and since the seal comes from compressing the olive, taping the thread might increase your chances of a leak. Thanks for watching!
And people still complain about the 'cost' of using a plumber or heating engineer....
Thanks for watching!
You are much better off, using push fit fittings. I’ve never had any problems with leaks.. since fitting a new bath, wash basin, and kitchen sink; around 2 years ago.
When you do get leaks.. the copper pipes start to corrode. Looks really messy.
The reason why plumbers use compression fittings… is because it looks more professional; but leaks do occasionally start to appear. Using a pipe bender is no problem. So you don’t really need to use elbow push fit; unless it’s really necessary. I’m not a professional plumber; and I’m useless at DIY. But i seem to get by alright. All you need is your imagination and initiative
The problem with push fit is how bulky the fittings are, makes it hard to fit in tight spots, and it’s hard to make them look neat. End feed solder or pressfit is the best in my opinion, solder is time consuming though and pressfit needs an expensive tool. Thanks for watching!
Plumbers will solder if its a visible joint, compression if its not or customer doesn't mind. Pushfit are not as reliable as the other 2 as eventually the rubber seal breaks down and a replacement is required. I don't know where you get the idea that a compression fitting will develop a leak over time, if it isn't leaking today it will still be good in 100 years. Unless it has been seriously manhandled when a plumber comes in to make a change to a pipe connected to that fitting. Pushfits have to be given even more care - be well supported and not stressed by pushing the pipe off centre when working on connected pipe. Pushfit are useful where you can't get tools in to do the others but I would only use them in places that can be inspected easily and I would probably want to change them for new ones after 10 yrs.
The leaks you would have seen on your previous installation would have come from the tap connector which is not a compression joint but a threaded joint with a washer. You likely have flexi-connectors on all those terminals you updated - keep an eye on them as the tap connector ends have a rubber washer that breaks down eventually and will leak on to the steel braiding which will then rust and become weak and cause a flood. Inspect your connections every year.
PTFE tape is not needed on compression fittings, they are designed to seal metal to metal.
PTFE is a last resort.
Yes exactly, it can be used to seal leaks. Thanks for watching!
If you cant solve a leak on an olive just do it again. Anything else is just a bodge job
I’ve never had a leak with ptfe or loctite, but seen plenty without! Thanks for watching!
Do yourself a favor and never put Teflon tape or anything else in a compression fitting. Unless of course you want it to leak.
Thanks for watching!
Your "Olive" is our US "ferrule". Boot.. Trunk.. All good.
Thanks for watching!
Yeah actually bud; 80% of the purpose of coating threads is to lubricate them. Do you see dope or tape on 80 year old npt plumbing? No.
They’re only brass, you shouldn’t be tightening them so much that lubricant on the thread is required
No need for ptfe on olives you plank.
How polite…..
I appreciate the Teflon-on-the-olive tip, sir. Thank you.
Glad you liked it, thanks for watching!