If high-quality tape is used and the thread is tightened and then turned back a little, will there be leakage?
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This post was last edited by zefix on 2016-1-20 at 10:35. With proper use of tape, will there be leaks if the threads are tightened and then turned back a little? Due to the large number of connectors, and the asymmetrical positions and directions that require slight adjustments, loosening is inevitable during installation.
It’s fine to turn back a little after wrapping it; turning it back too much might cause leakage
Loosening in the reverse direction is not allowed. I once worked on a similar task with a foreigner (Dutchman); it involved adjusting the ignition gun, as well as the connecting fittings for fuel gas and air – there were several such fittings that had to be removed and reinstalled over and over again. We tried it several times, using quite a lot of effort, but the fittings kept slipping away no matter what. Later, I saw foreigners do it; they paid attention to ensuring that everything was straight and aligned properly. The first attempt didn’t work, so they took it apart, rewound the PTFE material, and tried again until the requirements were met: everything was straight and aligned, and it was secured firmly in place.
It depends on how much it needs to be unscrewed and the working pressure; generally, unscrewing it is not allowed – it should be removed and the PTFE tape reapplied.
It’s best not to turn around, as there’s a high chance of leaks.
Pair it with some Rin/Union!
It’s not a big problem to return a little less when the pressure is low; otherwise, there will be issues.
It’s best not to reverse the twist – do it in one go.