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Old 11-04-2009, 10:47 PM   #1
wildwest450
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Default McMaster Carr help

Ugh, that site is huge! I'm trying to find the part on the left, only in female so it will thread into the quick disconnect on the right. The only one I found is only rated for 150f. I'm trying to copy Saccharomyces re-circ setup and need to copy the lid setup (http://www.homebrewtalk.com/f36/i-love-no-sparge-brewing-140972/#post1601449) second and third pic down. I want the quick disconnect on the top, who can find me a barbed thing-a-mabob (1/2"tubing) for the underneath????



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Old 11-04-2009, 11:00 PM   #2
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in the search bar type in 'pg 262'.



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Old 11-04-2009, 11:15 PM   #3
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Quote:
Originally Posted by JKoravos View Post
in the search bar type in 'pg 262'.
That gives me part # 5346K57 which is only good to 160f, and their only sold in packs of five.
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Old 11-04-2009, 11:21 PM   #4
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Either use a coupling (pg 4 for stainless or pg 21 for brass), or use a female NPT barbed fitting (pg 264 for stainless or pg 262 for brass).

I have no idea why they say the brass fittings are only good to 160. They should be fine up to boiling temps.

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Old 11-04-2009, 11:28 PM   #5
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How about this?

http://www.brewmasterswarehouse.com/product/0101743/brass-hose-barbs-fpt-12-fpt-x-12-barb

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Old 11-04-2009, 11:32 PM   #6
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You're better off going to Lowes for it. I know they have singles and it would only be like $4 or $5. Don't pay any attention to the heat limit for a brass fitting. It's not going to melt.

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Old 11-04-2009, 11:59 PM   #7
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The temperature rating for these fittings and lots of other stuff like the tubing and pumps we typically use is the operational limit when subjected to the upper pressure limit. We never come close to the maximum pressure limits which could be something like 200 psi. There is also a large safety factor built in to those limits.

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Old 11-05-2009, 08:33 AM   #8
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Crap that's perfect, except I hate to pay shipping for two little fittings. I guess i'll try Lowes.

Thanks for all the good suggestions.
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Old 11-05-2009, 03:04 PM   #9
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Quote:
Originally Posted by wildwest450 View Post
That gives me part # 5346K57 which is only good to 160f, and their only sold in packs of five.

Yeah, that's really weird that it lists 160F as the temp limit. Just goes to show that manufacturer's "operating temperature" ranges are a guideline, at best.

Also weird that they only sell them in packs of 5. Not typical of McMaster to do that with fittings.

I agree that you can probably find it locally. Lowe's, HD or a plumbing supply house.
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Old 11-08-2009, 04:13 AM   #10
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I agree, the temperature ratings are for high pressure. Even under high pressure these fitting are more likely to experience heat induced expansion that will cause leaks, not a break (although a leak is just as bad in this case). I work in a lab where we use smaller diameter brass fittings with boiling water in a closed system and never came close to a problem.
Also, selling in sets of five or more is typical of McMaster with certain parts (Cole Parmer too). They do carry just about any size fitting you need if you are willing to pay for it.



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