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Old 02-21-2012, 08:03 PM   #1
lehighsteve
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Default Therminator Leak

How do you guys connect the wort-in side on your Therminator?

I've been having the issue that I cannot get a good seal on the inlet side for the wort loop, resulting in well aerated hot wort, not to mention a few instances of hot wort shooting everywhere. I'm used a barbed fitting and tube, but the connection loosens dramatically when heated. I've tried using worm-drive clamps, but this hasn't sealed well, most likely due to uneven pressure on the tube. My next thought was to try nylon snap grips (link below), but I figured it would be better to ask around before sinking more money.


http://www.mcmaster.com/#standard-hose-clamps/=gckq7n

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Old 02-21-2012, 08:28 PM   #2
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Sounds like the ID of your tubing is too large. Have you double checked this? Can you replace the barbed fitting with another that will fit?

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Old 02-21-2012, 11:25 PM   #3
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The tubing fits snugly onto the barb at ambient, and I've never had any problems until pumping hot wort through it. I will mention that I'm using vinyl tubing, which become very flexible when heated. Perhaps a different tube material?

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Old 02-21-2012, 11:34 PM   #4
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You need high-temp tubing, such as thick-walled silicone or thermoplastic.

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Old 02-22-2012, 12:58 PM   #5
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After doing a little bit of reading, I've now come to the conclusion that using vinyl tubing for my brewing, while convenient, is not the best idea for a number of reasons, particularly for transfering hot fluids. That being said, what works well for you guys? Thermoplastic is a very broad category, does anyone have a specific thermoplastic material?

Also, does anyone have feedback on whether or not using reinforced tubing is worth the extra cost?

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Old 02-22-2012, 01:04 PM   #6
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I use this for all of my high temp transfers.

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Old 02-22-2012, 01:27 PM   #7
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Or this

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Old 02-27-2012, 04:04 PM   #8
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Thanks for the input guys. I used silicone tubing and it worked like a charm.

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Old 02-27-2012, 04:25 PM   #9
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+1

3/8" ID Silicone tubing fits snug and secure over a 1/2" hose barb. I don't even use clamps to hold them on in my gravity setup.

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Old 02-27-2012, 11:06 PM   #10
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Double check the size on your worm clams too. I snagged a couple #16's from my office instead of the #06 and when fully clamped down, they kind sandwich into a diamond shape rather than cinching down in a nice circle. The gaps could be allowing the tubing to expand and let air in.

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