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Old 08-28-2009, 03:19 PM   #1
illin8
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Default McMaster Quick Disconnect Question

I'm planning out the parts of my system and will be using 1/2" silicone tubing from AHS with these quick-disconnects from McMaster-Carr:

6739K59
6739K68

So, those QD's have a 3/8" coupling size. Where I'm having a problem is looking for a female socket with a 1/2" NPT like this:

6537K65

But this QD has a 1/2" coupling size. I found another socket like this with a 3/8" coupling size but its 3/8" NPT (6537k64. Any ideas? Do I need to go with 3/8" connections or is there another option?



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Last edited by illin8; 08-28-2009 at 03:21 PM. Reason: Edited the links
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Old 08-28-2009, 03:42 PM   #2
TwoHeadsBrewing
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The first ones you linked (3/8" connection, 1/2" NPT), is perfect for my needs and likely yours as well. I've been running these throughout my brewery with a March pump and have had no issues at all. My only beef is that they are effin HOT after the wort runs through them a bit.



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Old 08-28-2009, 04:05 PM   #3
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Try this one, 6534K83 I've actually been looking for the same thing, I use these QD, and like them a lot, but they do get hot.

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Old 08-28-2009, 04:13 PM   #4
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I agree, but I'm adding a stainless steel Tee that I was planning on having 1/2" NPT thread with QD's male-Tee-female on either end. If I go with 3/8" NPT, I'll have to reduce the size of the Tee which will reduce flow.

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South County Brewing Co.
Primaries 1 & 2: Apfelwein
Primary 3: EdWort's Haus Pale Ale
Bottle Conditioning: AHS Oktoberfest, Biermuncher's Centennial Blonde

On deck: Nothing (recently moved/working on the laundry list)

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Originally Posted by Laughing_Gnome_Invisible View Post
Love is not a pink heart on a Hallmark card. It is a curse on mankind in which the male of the species must continually struggle to gain his own happiness by means of satiating the batcrap crazy stupid whims of the lady with the snaky hair.
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Old 08-28-2009, 04:14 PM   #5
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Thanks B, but that has a shut-off valve which will restrict flow too I think.

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South County Brewing Co.
Primaries 1 & 2: Apfelwein
Primary 3: EdWort's Haus Pale Ale
Bottle Conditioning: AHS Oktoberfest, Biermuncher's Centennial Blonde

On deck: Nothing (recently moved/working on the laundry list)

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Originally Posted by Laughing_Gnome_Invisible View Post
Love is not a pink heart on a Hallmark card. It is a curse on mankind in which the male of the species must continually struggle to gain his own happiness by means of satiating the batcrap crazy stupid whims of the lady with the snaky hair.
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Old 08-28-2009, 04:39 PM   #6
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Do a search here on brass quick disconnects.

The numbers drive nuts, but it's been iterated many times here. Bobby_M has listed the ones to get-JUST GET THOSE.

I just received 6 90* females to finish my pump hoses- I strongly urge you to carefully plan out your routings FIRST and use 90* where applicable to avoid kinking the hoses.



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