Wind in and out half way. Jointing compound. Then wind all the way. Never leaks". Never had a leak yet using both and as its not pottable water, why not???? I also use a tread paste in all instance as a fail save. I apply the paste on top of the thread. The best way is to get a plumber round to do the job that way there shouldn't be any great concerns for leaks". I also use jointing compound too as this tends to ensure solid leak proof joints, Hope that helps.
Personally I use jointing compound as well to guarantee leak proof joints. Got a question that only a tradesperson can answer? We have thousands of trades ready to answer any question you may have. Airsource Ltd. Grimly Curmudgeon. We were somewhere around Barstow, on the edge of the desert, when the drugs began to take hold.
I remember David in Normandy When fastening together plumbing with brass screw fittings how many turns of PTFE tape is normal to wrap around the threads? The difficult ones to judge are things like taps into wall mounting bosses where you need enough turns in the right place to not only seal but also bring the tap to a suitably upright position.
For some things hemp as boss white are still easier immersion heaters for example. Tim S. YAPH coughed up some electrons that declared: Loctite thread sealing cord like dental floss on steroids is good for this since you can back it off if you need and it'll still seal, unlike PTFE.
Aaargh, noooo! Apart from the fact that it's illegal not suitable for potable water. PTFE is great for this: lubricates the thread and helps it to seal if the fibre washer's a bit reluctant.
I apply a couple of turns to the main thread and bunch a load up by the flange. Tim S said:. But I agree with this Think it'd use it on rads, but probably not much else. I wish they did boss green without the fibre crap in it - I tried some, it's bloody useless. Falls off before you can get the joint together. Boss white says non-toxic - is it legal to use it with PTFE string rather than hemp, say on a bib tap outside?
A tug on the hose the wrong way and the ruddy tap starts undoing. That's one time I do want the whole lot to set solid. Typically the tape is wrapped around a pipe's thread three times before it is screwed into place. Excellent for threaded stainless steel applications. Should Teflon tape be used on PVC threads? Don't use Teflon tape, Teflon paste or pipe dope.
Teflon paste and pipe dope, just like Teflon tape, make threaded joints slippery. Their use on PVC fittings can be an invitation to over-torque. When working with threaded plastic fittings do use a proper sealant. Can you reuse Teflon tape? You should remove the tape and replace it, a small roll at a big box store is less than a dollar.
I agree with Ed Beal that you should replace it, but if you're in a pinch you certainly can reuse PTFE tape, assuming you recover enough of it and it's not totally shredded. Can you use electrical tape instead of Teflon tape? You should buy a can of pipe dope, as it seems to last a lot longer for the same price.
The joint screwed together firmly without seeming too tight or too sloppy. I've since turned the mains water back on again and it isn't leaking so it must have been ok. My plumbing book mentions putting the tape on in the correct direction so it doesn't unravel while being assembled, it just failed to mention how many turns.
I don't like guessing if there is a "best practice" to follow. Not sure the number but thread in a red plastic dispenser, bit like dental floss. Screwfix do it. You don't understand Newton's Third Law of Motion? It's not rocket science, you know. Ah - we're talking about different things Think I'll go with the dental floss have some already and Universal. Seems a bombproof combination I can use anywhere if required. There is always a controversy around here re PTFE tape on compression fittings.
You are right, they seal on the olive not the thread, but many, me included put a wind or two around the thread because it makes doing it up tight easier. IOW its used as a lubricant not a seal. Sounds logical. I'll put a couple of winds on myself then with compression fittings; though I'm trying to avoid compression fittings where possible - I could never guess how tight to do them and have had a fair number of leaks and drips when I've used them previously.
Too slack they leak, too tight and the olive distorts and they leak. Could do with a torque wrench at an ideal setting. My end feed solder joints seem much more reliable and error proof - well so far. When I turn on my next stop tap I'll be testing around 40 joints! Fingers crossed as I don't fancy re-soldering any - some are very inconvenient to get to.
I use a turn or two round the olive - and always have done. Not going to stop now regardless of what others say. Dave Plowman da You're likely to get some on lips etc when showering or bathing? Linseed and its oil are edible and sold as health supplements with omega3 so perhaps its the hemp that's thee problem John -- John Mulrooney NOTE Email address IS correct but might not be checked for a while.
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