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Brews & Views Bulletin Board Service * Brews and Views Archive 2004 * Archive through September 09, 2004 * Quick Disconnect ? < Previous Next >

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George Schmidt
Junior Member
Username: Gschmidt

Post Number: 65
Registered: 08-2004
Posted on Wednesday, September 08, 2004 - 12:31 am:   Edit Post Delete Post View Post/Check IP    Ban Poster IP (Moderator/Admin only)

I'm looking at these:
http://www.usplastic.com/catalog/product.asp?catalog%5Fname=usplastic&category%5 Fname=6917&product%5Fid=8429
Are they closed or open when they're not connected?
 

JimTanguay
Intermediate Member
Username: Pizzaman

Post Number: 258
Registered: 02-2003
Posted on Wednesday, September 08, 2004 - 12:48 am:   Edit Post Delete Post View Post/Check IP    Ban Poster IP (Moderator/Admin only)

all QD's that I've seen are closed when not connected
 

Doug W
Junior Member
Username: Pivorat

Post Number: 65
Registered: 08-2004
Posted on Wednesday, September 08, 2004 - 01:03 am:   Edit Post Delete Post View Post/Check IP    Ban Poster IP (Moderator/Admin only)

those are Heat limited to 180F, watch out for Boils, ...... I wouldnt want boiling Wort to nail me or escape, and that is a big heat difference, from 180~212F ........ pressure wise as well too. Consider carefully.
 

Bill Pierce
Moderator
Username: Billpierce

Post Number: 490
Registered: 01-2002
Posted on Wednesday, September 08, 2004 - 01:25 am:   Edit Post Delete Post View Post/Check IP    Ban Poster IP (Moderator/Admin only)

I recommend the high temperature polysulfone quick disconnects even if they are somewhat pricey. They work extremely well. Whichever you choose, do not buy the ones with a shut-off because they restrict the flow quite a bit even when open.
 

George Schmidt
Junior Member
Username: Gschmidt

Post Number: 66
Registered: 08-2004
Posted on Wednesday, September 08, 2004 - 01:35 am:   Edit Post Delete Post View Post/Check IP    Ban Poster IP (Moderator/Admin only)

I was thinking of using them for mash water, beverage lines, etc. Heck, they're cheap enough I'd even put them onto racking canes and stuff. I'm thinking of replacing my tubing with some of the really good stuff and using disconnects to connect it to everything. I'm guessing the male side is closed when it's disconnected, but what about the female?
 

Kent Fletcher
Intermediate Member
Username: Fletch

Post Number: 487
Registered: 11-2002
Posted on Wednesday, September 08, 2004 - 01:56 am:   Edit Post Delete Post View Post/Check IP    Ban Poster IP (Moderator/Admin only)

The ones labeled "Straight" do not shut off (they are open), whether male or female. The ones labeled "Shut Off" are just that, and they close when disconnected. Like Bill said, they are highly restrictive. Also note that the largest size on that page is 3/8".
 

Jared Cook
Intermediate Member
Username: Jared

Post Number: 422
Registered: 09-2002
Posted on Wednesday, September 08, 2004 - 02:14 am:   Edit Post Delete Post View Post/Check IP    Ban Poster IP (Moderator/Admin only)

I would have a lot of those QD's if they came in 1/2". I'm having a hard time justifying the polysulfone QD's because they are so expensive. I'm just going to have to wait until complete frustration with hose barbs sets in.
 

Carl McCoy
Junior Member
Username: Ib4it

Post Number: 54
Registered: 08-2002
Posted on Wednesday, September 08, 2004 - 02:29 am:   Edit Post Delete Post View Post/Check IP    Ban Poster IP (Moderator/Admin only)

I've been doing the same kind of "shopping", don't mean to thread hijack.

So the Polysulfone couplings on this page are the "best" straight through option? http://www.usplastic.com/catalog/product.asp?catalog%5Fname=USPlastic&category%5 Fname=6917&product%5Fid=7413

AND if I wanted a complete 1/2 NPT coupling I would have to get #60687($7.19) & 60812 ($3.58)

If so, thats not really that expensive. Especially if the $3.58 fitting is used for everything except the in/out of the pump.
 

Jared Cook
Intermediate Member
Username: Jared

Post Number: 423
Registered: 09-2002
Posted on Wednesday, September 08, 2004 - 02:37 am:   Edit Post Delete Post View Post/Check IP    Ban Poster IP (Moderator/Admin only)

Is it just me, or is it impossible to find anything on that page? They really need some organization. It looks like they just randomized their inventory and printed it on the page.
 

Kent Fletcher
Intermediate Member
Username: Fletch

Post Number: 488
Registered: 11-2002
Posted on Wednesday, September 08, 2004 - 02:54 am:   Edit Post Delete Post View Post/Check IP    Ban Poster IP (Moderator/Admin only)

The 60687 is PolyPROPYLENE, not Polysulfone. You want 60669, $9.36 each. But that's for pipe threads, as is the 60812. Where do your hoses go?

"Especially if the $3.58 fitting is used for everything except the in/out of the pump."

I'm trying to figure how that would work. You need to have either Males on all the vessels AND the pump, with females on the hose ends, or the other way around. The $3.58 fitting has male pipe threads, so you put it on the vessels and the pump, for a total of at least 6 (HLT, MLT, BK, Pump, Chiller (in). OK, so that's about $20, plus 4 of the 60674 (1/2" hose barb coupling body) to go on two hoses, and you're up to close to $60, plus shipping. And for those of us with RIMS or HERMS rigs, it's over $80.
 

Jared Cook
Intermediate Member
Username: Jared

Post Number: 424
Registered: 09-2002
Posted on Wednesday, September 08, 2004 - 02:59 am:   Edit Post Delete Post View Post/Check IP    Ban Poster IP (Moderator/Admin only)

See what I mean? It's almost impossible to figure out what you are looking at on that page. And yeah, $80 is about what I figured before. I just can't justify it.
 

Doug W
Junior Member
Username: Pivorat

Post Number: 66
Registered: 08-2004
Posted on Wednesday, September 08, 2004 - 03:12 am:   Edit Post Delete Post View Post/Check IP    Ban Poster IP (Moderator/Admin only)

80 bucks is the price of a March pump when you get lucky on Ebay.....
 

Kent Fletcher
Intermediate Member
Username: Fletch

Post Number: 489
Registered: 11-2002
Posted on Wednesday, September 08, 2004 - 03:44 am:   Edit Post Delete Post View Post/Check IP    Ban Poster IP (Moderator/Admin only)

It's also the price of a few batches of beer, and 10 gallon batches, at that!
 

George Schmidt
Junior Member
Username: Gschmidt

Post Number: 68
Registered: 08-2004
Posted on Wednesday, September 08, 2004 - 04:22 am:   Edit Post Delete Post View Post/Check IP    Ban Poster IP (Moderator/Admin only)

What's the problem with 3/8" hoses and fittings? Assuming I don't have anything to match up yet, why would I be better of with 1/2" over 3/8"? Anything I pumped through 3/8" would already be SO much faster than siphoning with only 2 feet of head. The hoses and the fittings would all be cheaper as well. How much less flow would result?
 

Kent Fletcher
Intermediate Member
Username: Fletch

Post Number: 491
Registered: 11-2002
Posted on Wednesday, September 08, 2004 - 04:49 am:   Edit Post Delete Post View Post/Check IP    Ban Poster IP (Moderator/Admin only)

1/2" ID hose has a cross-sectional opening of 0.196 inches, 3/8" is 0.110 inches. Add to that the increased head (friction), and the flow rate with 3/8" hose is less than half that of 1/2". It's actually worse than just the difference in the hose - barbed hose fittings get more restrictive as the size gets smaller, due to the material thickness of the barb.
 

Belly Buster Bob
Senior Member
Username: Canman

Post Number: 1855
Registered: 02-2003
Posted on Wednesday, September 08, 2004 - 10:16 am:   Edit Post Delete Post View Post/Check IP    Ban Poster IP (Moderator/Admin only)

http://www.mivamall.com/Merchant2/merchant.mv?Screen=PROD&Store_Code=store03&Pro duct_Code=qc

anyone know anything about these?????
price is right
 

David S.
Member
Username: Dsundberg

Post Number: 141
Registered: 04-2004
Posted on Wednesday, September 08, 2004 - 08:52 pm:   Edit Post Delete Post View Post/Check IP    Ban Poster IP (Moderator/Admin only)

They looks like the ones I've been using, but they didn't come from there. Mine cut off on both ends. I use a pair on my CO2 line and a bottle filler. They work great, but you can't take them apart, so clean immediately if you run beer through them.

I thought I was paying way too much when I looked at the US Plastics page, until I realized that they have shut off and non shut off versions. Definitely get the shut off kind.