LOCTITE melt

[AI Plumber]

This is a external coupling (integral solder ring) copper to female with uponor pipe to male thread (coupling).

Would the loctite melt if you solder it after tightening the fitting with loctite on ? And therefore making the fitting leak.

Not been tested yet but would appreciate any insight on this.

 

[ShaunCorbs]

yes not designed to do that says somewhere in the instructions to solder to pipe then make the fitting up, but the piece (with the rubber o rings) isnt all the way in yet

 

[rpm]

Could probably find out for sure on their web site. My guess is Yes.

 

[AI Plumber]

What do you mean piece with the rubber o rings ins't all the way in yet ? Do you mean it hasn't been tightened ? No it hasn't, just showing the loctite.

Yeah its better to solder the pipe to the fitting and then put together but if there is tight space and you do solder with fitting in would the loctite melt ?

Whats your thoughts ? or has it happened to anyone ?

 

[ShaunCorbs]

What do you mean piece with the rubber o rings ins't all the way in yet ? Do you mean it hasn't been tightened ? No it hasn't, just showing the loctite.

Yeah its better to solder the pipe to the fitting and then put together but if there is tight space and you do solder with fitting in would the loctite melt ?

Whats your thoughts ? or has it happened to anyone ?

ok and still wouldnt chance it in a tight space what happens if it does leak (which is will not rated for that high temps) you have to strip and re do it

 

[plumben]

Yes i'd say it would melt or catch fire,
If your struggling for space or wont be able to tighten it once soldered, cut the pipe far enough away and add a straight,
solder the fitting onto a length of pipe, 300mm minimum away from a plastic fitting to solder I think so i'd go with that them add locktight make the pipe and solder a straight as far away as you can Get it

If that makes sense

 

[rpm]

Just remembered, when working on big commercial pumps and the bolts had Locitite Threadlocker we used to heat the area first so deffo no chance.

 

[Old Account]

first soldering pipe afterwards connect the fitting but let a cool down a bit

 

[AI Plumber]

Yeah that makes sense, I've done that in a few places also used female iron to copper instead. The place where it has been soldered with loctite can be replaced hopefully before filling up if its a problem.

 

[Ermintrude]

Lock tight is pTFE so will burn but won't "melt" until 330c

 

[gmartine]

IF it's 55 it has a service "range" of up to 130c only.

 

[bert large]

RPM is right. Application of heat is used in industry to break a Loctited fastening.
You'll know if you have destroyed the Loctite as you will see a puff of white smoke.