Soldering near 1/2 female to 15mm copper fitting

[dextur]

Hi I have soldered a piece of copper in to a 1/2 female to 15mm copper No.3 fitting. I have put jointing compound on the female thread and screw it in to the male fitting. About 3 inch away from this I now need to solder an elbow to the pipe leaving the No.3 fitting. Will this effect the pipe jointing compound? I plan to put a wet cloth over the No.3 fitting to try kept heat transfer to a minimum.

 

[Blagard]

It could do.

I once asked Loctite for advice about using loctite55 near a soldered connection to be done afterwards. They suggested I keep at least 150mm away!

So you are right to try and get as much of a heat sink near the threaded connection as possible. What compound did you use?

 

[dextur]

using water hawk, it says on the tube it can be used up to 200 degrees c.

 

[Blagard]

Loctite55 is only suited up to 130 degrees so I guess you will a higher tolerance to heat. It's worth trying what you are doing and then watch it carefully when testing!

 

[Charnwood]

Pedantry maybe, but a female would be a No 2.

 

[dextur]

what temperature does lead free solder melt?

 

[Blagard]

227 - 240 C if the below site is correct

http://www.somersetsolders.com/product.php/696/0/lead_free_solder_solid_core_3_25mm

 

[crashndie]

put a wet rag round it and keep heat to a min when soldering if your concerned about it use a compression fitting

 

[dextur]

So with a wet cloth over the fitting that is 3inches away it should stay below this?

 

[crashndie]

yeah wrap it round it make sure its wet wet not just damp been doing it 17yrs Ive personally not had a problem using that method

 

[dextur]

yeah wrap it round it make sure its wet wet not just damp been doing it 17yrs Ive personally not had a problem using that method

Thanks even when soldering about 3inches away?