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Old 10-31-2005, 09:31 PM   #1
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Pex-Crimped vs Qwest fittings

What is the difference between the crimped fittings and the Qwest fittings for PEX tubing? Does anyone have any pix of the two? What are the pros and/or cons of each, if any? Thanks in advance for the response.

Frederic
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Old 10-31-2005, 10:32 PM   #2
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The crimper costs about $100 and takes a lot of room to operate. For that reason, it is better for new work than for repairs in restricted spaces. There is also a wrench-tightened small crimper that works in tighter spaces, but that can be time consuming and frustrating if a lot of fittings need to be installed.

OTOH, the crimped fittings are a lot cheaper than the Quest fittings and make a neater installation for new work.

If I had to do limited repairs, I would use the Quest fittings. For a total restoration, I would definitely go with the crimped fittings.
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Old 10-31-2005, 10:35 PM   #3
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We were able to rent the crimper for $5 per day from the plumbing supply store in our area....
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Old 11-01-2005, 07:05 AM   #4
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PEX and new space age fittings

Frederick, Do yourself a big favor and look into using cash Acme SharkBite fittings instead of the plastic straps and the expensice installation tool. I replaced some copper that took me two days to install and still leaked after all that work. A plumber told me to try PEX with the SharkBite fittings and the reinstallation took me 15 minutes without as much as a drop of water leaking. In the worsd of my nephew, it's "the bomb". View these way cool and easy fittings here and see the graphic demo. http://www.cashacme.com/sharkbite.html Good luck, Glyn Judson '69 Caravel Santa Monica CA
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Old 11-01-2005, 08:53 AM   #5
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Glyn.

Those really are neat fittings! I'm not sure I'd be comfortable plumbing a house with those, but they seem perfect for AS/RV type projects.

Way cool.

Jonathan
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Old 11-01-2005, 09:18 AM   #6
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I replumbed my 79 excella MH with the quest and they
don't leak a drop. They are expensive but well worth it and if they ever do leak you can just tighten them. Crimps will leak after 7 or 8 years of vibration on the
road. Just my 2cents worth !
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Old 11-01-2005, 09:30 AM   #7
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SharkBite and PEX

Jonathan,

Those cast bronze SharkBite fittings are made for just that, household plumbing. For that matter I'm sure they're used in commercial applications too. The really neat thing about them is their ease of use, you simply push the PEX, Copper or CPVP onto them and use the little orange life ring for easy removal. There is a 360 degree series of stainless steel grabbers that oppose the direction of pull when trying to pull the pipe out of the fitting and an O-ring on the outside of the pipe that does the sealing. T

When you compress the life ring on the fitting it causes the grabbers to retract, thereby allowing easy pipe removal. Sooo simple yet so brilliant.

As far as the PEX is concerned, it has very impressive limit figures for temp and pressure, a lot more than you or I would ever see in our home, business or Airstream. I can't accurately recite them but it's something like 180 degrees F and 150psi. Just don't hold me to those numbers as being right on the mark but they're darned close.

If the PEX makes you uneasy, use lengths of copper pipe and you'll be good to go forever. I'm looking at a SharkBite T-fitting right here on my desk that has two short lengths of PEX and one short copper pipe attached to it. No amount of tugging can move any of them from their seated position.

Don't trust me, go to an industrial plumbing supply and sample a fitting for yourself.

I have no economic interest in these products except that I want to avoid the economics of plumbing failure after replacing a lot of the aft flooring in my Caravel due to water induced dry rot. ; - )

Glyn
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Old 11-01-2005, 10:35 AM   #8
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that Sharkbite looks like a great product. I think I'm going to give it shot. As far as pressures go it is rated to 200 psi. Hooked to a municipal water supply you would never see pressures in that range.
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Old 11-01-2005, 11:23 AM   #9
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Using SharkBite fittings

Not to beat a dead horse here, but you won't be sorry using these fittings. Feel free to email me back channel at glynjudson@adelphia.net for a few images of my PEX/SharkBite installation at the rear of my '69 Caravel.
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Old 11-01-2005, 12:27 PM   #10
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I guess I should have given a bit more info in my question....Lazarus has already been replumbed with PEX...I just don't know what was used, Qwest fittings or crimps....that's why I was asking whether anyone had pics....the fittings that are on my PEX are stainless steel, kinda look like the straps that you have on heater hose in your car, but instead of screwing them tight, there's a little end on it where it's attached.

Frederic
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Old 11-01-2005, 02:09 PM   #11
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Here is what Iused on my water heater...


I used in a few places a fitting like the sharkbite ones posted earlier. Very easy but the trust factor was low for me so I went with these fittings.
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Old 11-01-2005, 05:00 PM   #12
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So I just spent the last two hours looking at Buttercup's website.....how addicting! I love it!

Frederic
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Old 11-01-2005, 05:37 PM   #13
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If the fittings are a metal ring wrapped around the end of the pipe then it is crimped. Fittings go inside the tubing and the metal ring is crimped to hold it onto them. These are often used in original manufacturing as a matter of economy in quantity.

If the fittings are big gray nuts then they are Quest.These go to standard pipe fittings with iron pipe threads such as found on faucets, hot water heaters and such things. Buttercup's hot water heater is a good picture of Quest fittings.

As noted, there are other fittings, too. Flair-it is somewhat like Quest. Sharkbite sounds interesting.

I had some aluminum crimp rings in a 1990 B-190 corrode and leak. Repaired with Quest. Works fine. Have pictures. can't find them right now or I'd show them to ya' ;-)
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Old 11-01-2005, 08:20 PM   #14
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Quote:
Originally Posted by StingrayL82
So I just spent the last two hours looking at Buttercup's website.....how addicting! I love it!

Frederic
Thank you so very much. I have a hit list of other stuff to document and post. But at least I trust that you have found the info you were looking for???

tk
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Old 11-01-2005, 08:48 PM   #15
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Has anybody seen the new crimped copper fittings? They're solid copper with a raised collar that houses an O-ring.

A plumber friend showed me his new bathroom done entirely with these fittings - pretty slick! There's no soldering at all. The O-ring does the sealing and a crimp holds things together mechanically. Looks like it might be good for those high-vibration applications.

Bob
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Old 11-02-2005, 12:04 AM   #16
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Buttercup,

No, not really, but I still loved looking at the site! So basically I have found out, thanks to Leipper, that I have the crimps...and from what I gather, I can expect them to fail? That's not very encouraging.

Frederic
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