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Post by John Baguley on Oct 22, 2021 10:05:04 GMT
Thanks Pete,
I'll probably find out later today!
John
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Post by John Baguley on Oct 24, 2021 0:09:38 GMT
Well, I tested the boiler yesterday and it went much better than I was expecting. There are a few tiny pin hole leaks but nothing serious. The stays are all water tight and the inner firebox and combustion chamber are fine. There is a pin hole leak around the solid stay on the front tubeplate, one at the top of the firehole tube on the backhead and a couple of really tiny leaks around the blower valve. They have been previously 'repaired' with soft solder but obviously not well enough so will need to be redone.
The bad leak on the front tubeplate when I first tested the boiler must have been the superheater header joint leaking as I suspected and I was obviously mistaken when I thought that some of the stays inside the firebox were leaking.
I would guess that all the previous soft soldering has been done with plumbers solder rather than Comsol so I will have to use that to do the repairs. Trying to use the higher melting point Comsol will no doubt cause more problems than it will solve.
I'll try and modify the superheater header joint to use an O ring seal rather than a gasket.
John
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