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Discuss Is there a leak sealing fluid for thermal solar? in the Renewable Energy area at PlumbersForums.net

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Sharp Point

As title guys n gals, been to a job today and customer asked me to look at some weeping compression fittings. Will fernox f4 be suitable?

thanks
 

townfanjon

Esteemed
Plumber
Gas Engineer
Personally i hate any leak sealers , but surely when you can see the leaks its easier to fix them. If you do check they are brass olives and not soft copper
 
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IDCHAPPY

Does all solar leak? seen 2 installs and they both had seeps at the compression fittings...
 
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S

Sharp Point

Cheers TFJ, looking at the weeping joints i can see in the garage, remaking them could be possible....but i'm assuming there will be more on the flow/ return pipes behind the insulation and plasterboard in dormer roofwork to the panels on the roof.
 
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Sharp Point

Lol i thought you meant one or two ,sounds like them all.
There's dried residue all over the pump station and about 6 x comp fittings, so if thats a little snap shot of the overall system, i assume theyll be more!! And as IDCHAPPY mentioned it's not the first time i've seen them on thermal solar systems filled with glycol.
 

Worcester

Plumber
Does all solar leak? seen 2 installs and they both had seeps at the compression fittings...
The problem is the massive expansion and contraction changes from 150°C down to -4°C can happen in one day - think clear skies, bright sunny winters day, freezing cold nights...

If the joint isn't done 100% correctly, with the right materials, then you'll find weeping joints.
 

village idiot

Plumber
Gas Engineer
My missus has just informed me that sealing against oil is best achieved with an anaerobic sealant. So if you chaps/gals who install solar are dealing with oil? then Loctite is not an option. Sorry
 
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lame plumber

My missus has just informed me that sealing against oil is best achieved with an anaerobic sealant. So if you chaps/gals who install solar are dealing with oil? then Loctite is not an option. Sorry
they are chatting about solar systems filled with water/glycol, no oil involved village
 

Worcester

Plumber
Look in our tools tray and you'll find Loctite 55 and 577, not a mm of PTFE to be seen. Can't remeber the name of the sealant we use on the solar thermal, though it is a special V high temperature one, could be the Solar-Fermit one, will have to check when the guys are back at work tomorrow (I gave them a day off :) )
 
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