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Old 04-06-2008, 05:43 PM   #1
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How to transition to PEX?

I just noticed a leak in a very inconvenient place. I had removed a shelf in the lav closet to get to it. The offending T is the first picture below. I'm thinking of using PEX as a replacement. The second picture is a transition to vinyl tube around the water pump. This is a material I'd rather NOT use, even though it is a material I know how to use. I'd be comfortable with it, but I don't think it is right to use. The third picture is a better photo of the material I currently have in my '78 Argosy.

First, what is this current material called? Second, what sort of transition fitting would I use from the old stuff to PEX after I cut out the 3 branches of this offending tee?

Thanks!
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So...you bought a vintage trailer, did you, honey? Good deal, was it? Oh, just a couple of repairs, huh?

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Old 04-06-2008, 05:51 PM   #2
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It is my understandng that the compression fittings (I think thats the term) for PEX that link any material. Expect to pay $3-5 a fitting.
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Old 04-06-2008, 05:57 PM   #3
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Check this thread for ideas. I have used Sharkbite, it works great and is re-usable. Transitions from copper to pex. The fittings are made of brass and a bit pricey.
I know Lewster uses another product that is cheaper that he likes.
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Old 04-06-2008, 06:31 PM   #4
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Good ideas

I just went to the Sharkbite site and the SeaTech site. I think I'll be running by Lowe's and Home Depot next week. I'll grab a straight-line connector of each style and see if they attach to my product.

I'm still wondering what mine is. It is gray plastic piping, if the color isn't clear in the photos. Do you think it could be called CPVC?
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Old 04-06-2008, 09:07 PM   #5
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Quote:
Originally Posted by OregonArgy
I'm still wondering what mine is. It is gray plastic piping, if the color isn't clear in the photos. Do you think it could be called CPVC?
You may have Polybutylene.

My home had it before I bought it and it was re plumbed with CPVC which looks like regular PVC. If it is Polybutylene, you will want to remove it all. I don't think you can still get any money from the law suit at this late date, but you might check.
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Old 04-12-2008, 04:40 PM   #6
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All fixed!!

I just finished the repair to this leak. I went down to Lowe's and used SeaTech push-in fittings. They are a bit expensive, but worth twice the cost in their ease of use. I can't believe how quickly the repair happened.

The only problem, my mini pipe cutter wheel ended up dropped down between my gray water and black water tanks. Uh-oh. Oh well, I guess I'll get it whenever I end up tearing the whole thing apart to switch out the entire plumbing system someday.

Thanks for all your help!
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Old 04-12-2008, 06:32 PM   #7
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Looks great, good job!
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Old 04-12-2008, 09:49 PM   #8
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Your repairs look great.

I have friends who have used Sea-tech with excellent results.

I'm going to replace all the old cooper with Pex and Sharkbite fittings.
Bought most of mine off e-bay, My Home Depot sells out too quickly.

Restoring an older model is sooo much fun.
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Old 04-12-2008, 10:03 PM   #9
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You guys are on the right track!

I use Sea-Tech fittings to link PEX to any similar size material with no problems......copper, CPVC or ......polybutylene (if you have it and don't remove it!!!!!) Been using the stuff for 3 years now and NO CALL-BACKS for leaks!!!!

Shark-Bites are also very good, but a little more expensive and a little more difficult to connect in really tight spaces.

It's all good with the new stuff!!!!!!!!!!!
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Old 04-13-2008, 06:19 PM   #10
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One quick warning. When I went to Lowe's, SeaTech isn't sold under the name SeaTech. Their products were sold in packages under the name Watts WaterPEX, but clearly have SeaTech on the fittings inside the plastic envelopes.
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Old 05-01-2008, 10:05 PM   #11
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I have used pex alot in residential building and never had any problems. I will be converting mine over when I get back to all my dads tools (his pliers) b/c if I remember correctly the cripping pliers are ridiculously expensive everything is reasonable and works excellent. Sometimes in tight places it can be tricky. They make plenty of fittings to connector it to different types of material as well.
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Old 05-01-2008, 11:50 PM   #12
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I rippied all of the old supply side plumbing out & am replumbing with pex. So far so good.
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Old 05-05-2008, 09:40 PM   #13
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In going through the supply side plumbing, now I've tried Sharkbite AND SeaTech. The SeaTech is at Lowe's and I VERY MUCH dislike Lowe's (for many reasons, all to do with problematic customer no-service). One day they were out of a 1/2" T of the SeaTech. So I thought, "What a great opportunity to try out Sharkbite at Home Depot!" The Sharkbite, though brass and extremely sturdy, were just a tad more complicated to work with and were about 30% more expensive ($8 a fitting adds up REALLY fast!). I'll probably stay with Sharkbite, though, because of the whole HD/Lowe's comparison.

PEX is definitely the only way to go for new applications or repairs.
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