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Old 03-31-2010, 04:44 PM   #81
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I used zip ties on my barbs. Seemed to do the trick. No leaks and it keeps bulky clamps out of the way when using the camlocks.


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Old 03-31-2010, 05:03 PM   #82
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McMaster-Carr sells a similar hose. Orange outside cover. They do offer it in 1/2" ID for $6.00 a foot.

http://www.mcmaster.com/#brewers%27-hose/=6girlp

I have used the same hose in 1.5" ID in quite a few brewpub systems.

It is rather stiff and gets even stiffer when cold. Serious PITA to use in a cold room.


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Old 03-31-2010, 10:18 PM   #83
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Quote:
Originally Posted by Bobby_M View Post
I plan to use an oversized barb and stretch the silicone over it. I doubt I'll even need a clamp.
I slipped 1/2" silicone tubing on these 1/2" pro-flo camlock females and they stay put, and don't leak air or liquid bubbles unless I fiddle them. No clamps of any kind. One reason I love silicone over the less stretchy thermoplastic.
However I'll probably end up clamping on some oetikers (sp?) or something soon.
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Old 04-03-2010, 09:10 PM   #84
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Quote:
Originally Posted by Bobby_M View Post
I suspect the concerns for wearing out the arms is based on how snug the fit starts out. I believe the seals are BunaN and they're pretty firm. I swapped one of them out for a silicone oring and the arms engage with much less force.
Bobby, what size o-ring did you use to replace the BunaN? Got a McMaster part number, per chance?
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Old 04-03-2010, 09:45 PM   #85
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They are the same ones I got as a weldless seal on a 1/2" bulkhead and I THINK they were #211. I tested it out today and it seals no problem.

http://www.mcmaster.com/itm/find.ASP...string=9396K32

Cheaper for half the amount of rings: http://www.oringsandmore.com/servlet...ize-211/Detail

He also sells on ebay.
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Old 04-04-2010, 01:51 AM   #86
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Quote:
Originally Posted by Bobby_M View Post
They are the same ones I got as a weldless seal on a 1/2" bulkhead and I THINK they were #211. I tested it out today and it seals no problem.

http://www.mcmaster.com/itm/find.ASP...string=9396K32

Cheaper for half the amount of rings: http://www.oringsandmore.com/servlet...ize-211/Detail

He also sells on ebay.
Thanks sir. Wanna make sure I get the right one.

Cause, well...

Y'know... last thing I wanna do is to blow out an o-ring.
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Old 04-04-2010, 11:41 AM   #87
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For the 1/2" inchers I'm going to do npt, but I'm thinking of just going with the next size up (3/4") with barb instead of 1/2" npt and npt to barb for after the boil kettle and I want as few things to take apart to sanitize. Also prevents using a reducer from my 3/4" ball valve BK outlet.

Will 1/2" line stretch over a 3/4" barb? With some heat? After it's heated and fitted, is it a bi@tch to take apart and sanitize?
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Old 04-06-2010, 01:08 PM   #88
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If you've got 3/4" NPT valves then you can definitely go with the 3/4" camlocks. However, even the 1/2" kit is a little bulky. Yes, 1/2" silicone should make it over the 3/4" barb just fine if it's anything like the 1/2" barb.

For those of you who said you didn't notice any restriction with the small barb probably didn't try pumping without said restriction. I just tried the March pump with the the tubing stretched over the 1/2" NPT and holy cow, fire hose in comparison. If I can get around to it, I'll measure the GPM difference between the two.
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Old 04-06-2010, 01:18 PM   #89
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Just spoke with the guy at Pro Flow. He had some specs and measured by hand the rest.

Here are the dimensions for both the 1/2" and 3/4".

1/2"
Barb ID- .32"
Barb OD- .49"
Barb OD bumps- .58"
Internal ID- .45"
Cam OD- .54"

3/4"
Barb ID- .55"
Barb OD- .75"
Barb OD bumps- .85"
Internal ID- .72"
Cam OD- .85"

I'm actually going to go with tri-clamps in stead of 3/4" cam locks but I thought you might be interested in the info. I'll still go with the 1/2" NPT cams though. Party on, Wayne.
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Old 04-06-2010, 02:57 PM   #90
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There may be a restriction on the 1/2 barb, but I've been doing wet tests all weekend and I'm impressed with the flow.... it will do 15 gallons in just a few minutes... more than fast enough for me.


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