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Stalactite growing beneath the gauge glass. . . .

I'll log back in (in a moment) with my phone and upload a photo or two - but this thing has been slowly dripping for years.
Took the glass out today to clean it (I still have to skim it, but it's been too cold last several days). After cleaning it, I discovered that the bottom valve area is FULL of brown gunk. I ran the water off via the LWCO next to and below it (it ran clear after a moment or two). But the water came back up very dense brown when I re-installed the glass, and opened the valves.
I would love to remove this little screw beneath the bottom one and run out the brown stuff that's obviously in there. I'm a little unsure of whether I should attempt it though. The wings on it are bent, as if someone had a hard time with it previously, and I don't know what size cap, or other do-hicky I would need to screw back onto it. Any help would be much appreciated - thanks.
Took the glass out today to clean it (I still have to skim it, but it's been too cold last several days). After cleaning it, I discovered that the bottom valve area is FULL of brown gunk. I ran the water off via the LWCO next to and below it (it ran clear after a moment or two). But the water came back up very dense brown when I re-installed the glass, and opened the valves.
I would love to remove this little screw beneath the bottom one and run out the brown stuff that's obviously in there. I'm a little unsure of whether I should attempt it though. The wings on it are bent, as if someone had a hard time with it previously, and I don't know what size cap, or other do-hicky I would need to screw back onto it. Any help would be much appreciated - thanks.
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Comments
Any ideas on what I should replace that with (in May)? I saw a gauge glass set, which came with what looked like a small ball valve. I don't know sizes -
A good supplier should be able to sell you a complete assembly with glass cut to length. Just tell them the center distance between the top and bottom tappings on the boiler.
I have found Exxex Brass in Warren Michigan (586 757 8200) to offer several different styles, and in forged brass construction. These are slightly larger, and IMO better quality than the common cast versions. I have also been very pleased with the customer service they offer.
Website: www.nashjenningspumps.com
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