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Posted by BobH on April 24, 2008, 9:01 pm
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Grant Erwin wrote:
> Some guys colloquially call regulators "gauges". I am not one of them. Most
> welding regulators have two gauges on them. One is high pressure and the
> other low.
>
> I buy quality regulators when I see them cheap. I see a lot of them.
> What I am wondering is what causes the problem when a gauge doesn't
> quite return to zero. Is it repairable? Does it necessarily mean the
> gauge is inaccurate?
>
> Thanks,
>
> Grant
Usually not returning to zero means it has been overpressured and the
bourdon tube stretched, though sometimes just applying pressure very
fast will make the little sector gear jump a tooth, especially if the
gauge is dirty.
I don't know if they are fixable. I have popped the gears a tooth or two
to get them to show zero again, but I have never attempted to calibrate
one afterwords.
Good Luck,
Bob
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> welding regulators have two gauges on them. One is high pressure and the
> other low.
>
> I buy quality regulators when I see them cheap. I see a lot of them.
> What I am wondering is what causes the problem when a gauge doesn't
> quite return to zero. Is it repairable? Does it necessarily mean the
> gauge is inaccurate?
>
> Thanks,
>
> Grant