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Old 01-31-2009, 01:59 PM   #1
Coastarine
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Default Water keeps shooting out of my sight glass

I installed a sight glass on my HLT and it keeps getting air bubbles in it which can't rise fast enough and every few seconds about a tbs of water squirts out the top! I drilled the hole for it as low as I could so I could measure small amounts of water, and I'm thinking that's why. The water is nowhere near boiling yet, it started happening about 30 seconds after I lit the burner. Is this common, and is there an easy solution that I'm missing? This is annoying.

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Old 01-31-2009, 03:39 PM   #2
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Well, offsetting the pot so that the sight glass is a little further from the burner seems to have it under control. Still impossible to get a good reading while the heat is on, but that's ok since I fill it then heat it.

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Old 01-31-2009, 03:43 PM   #3
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Fairly common with my setup. The elbow seems to retain more heat than the keg, causing higher temps in that area. Stirring seems to help a bit. No big deal because less than a quart is lost through out the heating cycle.

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Old 01-31-2009, 03:53 PM   #4
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You might be able to insert a needle/wire down the top of the sight glass. the needle should pop the bubbles and prevent them from bubbling out.
Maybe try a paper clip to test the idea.

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Old 02-01-2009, 01:11 AM   #5
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Create a deflector under the elbow with a cm or 2 of space. That oughta keep the heat away......

Tin foil is a quick solution....whatever permanent solution you choose can mimick the tin foil.

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Old 02-01-2009, 01:18 AM   #6
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Try a 1/4" X 1/2"-3/4" long SS bolt in the top of the tube, the threads slow the bubble long enough to seperate without liquid shooting out the top.

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Old 02-01-2009, 02:34 AM   #7
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A deflector was my plan until I decided the loss was minimal.

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primary- Tangerine Dream, SWMBO slayer,
serving- amber ale hop experiment #6, Roggenbier, apfelwine
planning- Cru?
conditioning- 9/9/09 barleywine
Drink water?... Never, fish fornicate in it.--- W.C. Fields
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Old 02-01-2009, 04:12 PM   #8
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I have a needle valve on the top of mine.

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Old 02-01-2009, 06:14 PM   #9
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I had the exact problem but it was from boil bubbles easily entering from inside. The fix was putting a short nipple on the inside to make the bubbles have a harder time getting into the fitting. Not a single problem now. Of course, a small heat shield is a decent idea too if you think the bubbles are forming inside the tube itself.

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