Re: Vaillant boiler pressure

Can you pressurize the system with air while cold? I've used that trick to
find leaks in automotive cooling systems. I haven't seen radiators used to
heat a house since a few built back in the 1950s but the systems are usually
pretty simple

That's what I'd do. Figure out how to connect a tire valve into one
of the system's air vents. Then pressurize the whole thing with a
bicycle pump to maybe fifty psi and then go over every joint with
liquid soap and look for bubbles. If you can avoid using the
plumber's sealant stuff, it would probably be better just on general
principles.

It occurs to me that this is the sort of thing I ought to do whenever
I do an extensive plumbing job around here: insinuate a Schrader tire
valve into the water system somewhere and whenever I think
everything's going to be just swell, pressurize it to a good hundred
psi with the air compressor and see if it actually is.

M Kinsler

.

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