Pex

[Ace]

Anyone know where I can find a new or used fresh water pex manifold?


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[bevans6]

My local hardware store keeps them in stock.

Brian

[stevet903]

http://www.supplyhouse.com/PEX-Manifolds-518000

[luvrbus]

They sell the mini blocks for 50 bucks to each his own but I think those are just a costly and show piece one doesn't need when the water system fails it always on the supply side 98% of the time and I have one in the RV and never used it

[Barn Owl]

Another option is to make your own with valves, tees, and elbows. Below is an example of one being made:

Introduction to PEX

[86102A3]

I ordered mine from that supplyhouse.com. It was sort of a kit, came with the fittings to tie the water line to it. They seem to have a pretty good price and it came fairly quickly. Now just need to get it installed.

[robertglines1]

For anyone that hasn't used it before. Make sure you end cuts are square and you get it pushed in all the way.  I air pressure mine at 50lbs air before covering up with cabinets etc.  Sure most knew that already!   Seems like I forget it on occasion and have to re-do.   Bob

[Oonrahnjay]

Another option is to make your own with valves, tees, and elbows. Below is an example of one being made:

Introduction to PEX  

    That's useful, Laryn - thanks for posting.  I'm trying to get info on PEX (I will have some use for it on the bus but I plan to do an "underfloor" PEX heating system in my bedroom/bathroom area at home).  When the guy says "copper rings", it appears that he means the top one of these, right?



    What is the bottom sleeve - what's the difference between it and the top ring (besides twice the price)?  When would you use the different ones?

    Also, there are some very nice compression tools out there but many of them are pretty $$pendy$$.  Some are simple "screw together with plain screw" types.  I'm sure that these are clunkier and slower, but if you plan to use a tool 11 times in a year, would you go with the $19 slow tool versus the $79 quick tool?   On the other hand, if I'm going to be lying on my back in the crawl space under 600 sq feet of the bedroom end of my house, the $79 will seem *really* cheap soon.  But what's the thought on the really inexpensive (slow, low-tech) tools?

     Finally, what size PEX do most people use for cold and hot water supply on their bus work?

[luvrbus]

!/2 inch is more than adequate Bruce I don't like the crimp rings I think the Zurn S/S ratchet clamp rings are far superior for holding and the easiest to install without leaking the tool is a little more expensive and there is no spacing on the ratchet clamps either it's made into the clamp like the crimp sleeve showed in the last of your pictures  

That little spacer on the crimp sleeve makes it easier to do slide it on the end of the pipe and crimp it IMO of the 3 I still like the Zurn the best. 

I found out you can glue the Pex it has the same OD as CPVC and you can glue the CPVC fittings on the Pex

[Oonrahnjay]

!/2 inch is more than adequate Bruce I don't like the crimp rings I think the Zurn S/S ratchet clamp rings are far superior for holding and the easiest to install without leaking the tool is a little more expensive and there is no spacing on the ratchet clamps either it's made into the clamp like the crimp sleeve showed in the last of your pictures  
That little spacer on the crimp sleeve makes it easier to do slide it on the end of the pipe and crimp it IMO of the 3 I still like the Zurn the best

    Thanks, Clifford.  If it holds better, I'm for it.  I figger that anytime we drive down the road, we put a lot more vibration and wiggling into a plumbing system than one in a home sees in 20 years (unless you live in California, that is).  I like the idea of the spacer on the crimp sleeve making the crimping easier -- another thing on a bus - if we have to do it, we're doing it in a cramped space.

I found out you can glue the Pex it has the same OD as CPVC and you can glue the CPVC fittings on the Pex

     That's really interesting, too.  And since CPVC is hot-water rated, that means you can adapt the fittings for hot and cold sides.  Please keep this kind of info coming; it's really helpful

[boogiethecat]

have you checked to make sure cpvc is ok for freezing? Pex is, but I'd wonder about cpvc.  I did my first bus with that and I'd never use it again... it's brittle and I had leak problems later on.
've used pex in my latest busses, 13 years now not a single issue.. fwiw...

[Melbo]

Here is another supplier that I have used

www.pexuniverse.com

HTH

Melbo

[luvrbus]

I saw the water district heat fusing the Pex together I wonder if they do that in houses now ?

[34kw]

I built a mobile shower facility for the USFS in 2004 and used Pex for everything 1" and under. We beat 3 semi's up and down dirt roads to fire camps all summer and then put 7,500 to 12,500 gallons of water a day through it for the showers and I have not had a single failure. I too like the rachet clamps better than the rings. If I built another unit I would use Pex again for sure.

[Nick Badame Refrig/ACC]

Hi Clifford,

It may look like the pex joints are heat fused but they are not. We use an expansion tool to spread the
pex to make a perfect connection. Here is the tool we use.

https://www.youtube.com/watch?v=ZOtRGbXs9Q0

Nick-