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Boiler improvements - pressuretrol, gauge

Steam Team,
Thanks for your advice last month...scraping surfaces helped the gaskets hold.
The boiler has been performing well. I watched it a while last night,
with ohmmeter in hand...pressuretroll is working, LWCO working.

I took some pictures so I could ask about some improvements I would like to do.

I would like to add additional pressure gauges - especially 0 to 5 psi,
and I would like a second pressuretrol, ideally using a separate pigtail.

I took pictures of the two places I think I can tee out and add:
in place of the one (regulation) gauge....or
teed off the pressure relief valve's vertical nipple.
The tee could be installed so that the vertical pressure relief valve
would be installed the same way...or, if horizontal relieve valves are available,
it would be neater.

It might be that having the LWCO an inch further out from the boiler
would give more room for installing and maintaining the pressuretrols
and pigtails. I believe the nipples that are threaded into the front
of the boiler could be longer. But there may be good reasons not to.

I measured from the top of the cabinet to the header, it is 25"

I know that the single riser is wrong, and the copper is bad,
but can't change it at this time. 9 radiators are to the left, one to the right.
Over the years, 2-3 radiators have been removed...and insulation has
been upgraded a few ways.