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Old 04-18-2012, 11:11 PM   #1
cobolstinks
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Has anyone try to stretch thermoplastic tubing over the 1/2" mpt pro-flow camlocks? I like the rigidity of the thermoplastic tubing, I bought thin walled silicone and my chugger sucked it shut on the inlet side. I'm now debating on whether to go silicone or thermoplastic.

So to summarize
1. Has anyone incorporated 1/2" thermoplastic tubing with the proflow camlocks? If so how.
2. What silicone is good enough to not shut it self with a pump running wide open? I see midwest has reinforced silcone for $8.99 a foot, but I don't want to spend near that on tubing. Would something like this work? http://www.austinhomebrew.com/produc...ducts_id=10014

Thanks!



 
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Old 04-18-2012, 11:16 PM   #2
aquenne
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Hi

Ive done what your suggesting and ended up using barbs. I went in with the intention to stretch the tubing over the MPT of an elbow and it just wasnt possible. Thermoplastic tubing is just very ridgid.



 
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Old 04-18-2012, 11:27 PM   #3
cobolstinks
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Quote:
Originally Posted by aquenne View Post
Hi

Ive done what your suggesting and ended up using barbs. I went in with the intention to stretch the tubing over the MPT of an elbow and it just wasnt possible. Thermoplastic tubing is just very ridgid.
did you try boiling the tubing first to soften it up? THats what the guys at northern brewer recommended to me a few minutes ago.

 
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Old 04-18-2012, 11:38 PM   #4
aquenne
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Yes. The tubing is not at all "stretchy".

Keep in mind the OD of 1/2 MPT is apprx 3/4".. I would think if you ground down the pipe threads you might have a chance.

 
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Old 04-18-2012, 11:42 PM   #5
JonW
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I use the over sized barbs from Brewers Hardware (below on the right) and have the thermoplastic hose stretched over them. I don't use any hose clamps on my system.

I use a 2 cup pyrex measuring cup and put some water in it and nuke it. Hold the hose in the water for about 10 seconds and then cram the barb in there real quick.

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Old 04-18-2012, 11:48 PM   #6
cobolstinks
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Quote:
Originally Posted by JonW View Post
I use the over sized barbs from Brewers Hardware (below on the right) and have the thermoplastic hose stretched over them. I don't use any hose clamps on my system.

I use a 2 cup pyrex measuring cup and put some water in it and nuke it. Hold the hose in the water for about 10 seconds and then cram the barb in there real quick.


Thanks Jon this gives me some hope. According to brewershardware the OD of those barbs is .625" so i think there's a chance this will work.

 
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Old 04-18-2012, 11:58 PM   #7
aquenne
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Yes those barbs will work with the thermoplastic hose (im using them as well). No clamps too.

 
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Old 04-19-2012, 12:06 AM   #8
Bobby_M
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I have the 5/8" barbs as well. There is no way you'll get thrermoplastic over 1/2" NPT threads. THat's over 1/4" of ID stretch. It's difficult enough with silicone.
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Old 04-19-2012, 12:14 AM   #9
cobolstinks
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Quote:
Originally Posted by Bobby_M View Post
I have the 5/8" barbs as well. There is no way you'll get thrermoplastic over 1/2" NPT threads. THat's over 1/4" of ID stretch. It's difficult enough with silicone.
bummer, well does 1/8" walled silicone suck itself shut when running a pump wide open?

 
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Old 04-19-2012, 12:27 AM   #10
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No, not at all.


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