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Old 01-19-2012, 04:14 PM   #1
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pex stub out?


getting ready to start on my inlet plumbing on a house that I have removed all the original plumbing. I will be (my plan at least) starting my pex right off or very near the meter. I have not worked with pex before and have a couple of questions. is it reasonable to run 3/4" to the areas of the home and then 1/2" to each fixture? what is recommended for the stubouts? I've seen a few option at the home store but am not sure what is best, I'm not sure if I like the idea of stubing with pex and using the 90" plastic elbow things I've seen or should I use the brass parts that screw the framing and then screw a copper stub into them (sorry I don't know the proper names). So, anyway can some of you that use pex often give a few tips to a noob? Thanks, 1

BTW, passed my electrical inspection. thanks for the help of the other threads. 1


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Old 01-19-2012, 05:22 PM   #2
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pex stub out?


Here is what I like



http://www.pexsupply.com/Viega-44227...-Elbow-w-Plate

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Old 01-19-2012, 05:29 PM   #3
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pex stub out?


That's are also my favorite, cheapest and fastest. There are two others but they require soldering or a plate and plastic snap in retainers that are pain, I
I'll only use them for something like a pedistal sink so I can get the valves closer together.
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Old 01-19-2012, 06:06 PM   #4
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pex stub out?


that looks good, does that have holes on all sides for universal mounting?

How about manifolds. I was planning on running 3/4" and using T's at each fixture to branch the 1/2" but it seems as I read about pex the norm is to use manifolds for less conections/fittings. can I run 3/4" to a wall near the bathroom and then put a manifold in the wall and run 1/2" from there to each fixture or does the manifold have to have access for future use? Thanks, 1
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Old 01-19-2012, 07:19 PM   #5
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pex stub out?


There are a number of holes in the mounting plate to handle any mounting direction.
A true PEX manifold system is located in a central area and home runs are made to each device. The manifold has shutoff valve and needs to be accessible.



Or you can use mini-manifolds (with or without valves).

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Old 01-19-2012, 10:15 PM   #6
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pex stub out?


yes pex manifolds work well ,as long as they are installed right....proper sizing..
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Old 01-19-2012, 11:15 PM   #7
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pex stub out?


Ok, went to my local home store. The stub outs they have don't have the plates so I may have to use a clamp of some sort. I think the manifold I was thinking of was the mini version, can I put this in a wall that will be drywalled?
My house is quite small with 1 bathroom, the stub outs for the bathroom and kitchen are all within 15 ft of each other along a wall (back to back). I'd like to run 3/4 to that wall and then run mini manifolds for cold and hot. Does this sound ok? Thanks,1
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Old 01-20-2012, 04:12 AM   #8
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pex stub out?


If your house has a basement or a crawl space, I would install mini manifolds with valves under the house. This gives you the flexibility of cutting off a fixture while having everything else working. If you are on a slab and plumbing thru the attic, I would install the mini manifold there.

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