Thinking about doing my own PEX

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bigb56

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So I am a pretty accomplished DIY and worked a bit in plumbing, welding and was in the electrical trade for 30 years and had a residential/commercial license for 16 years till I retired. I have re-piped my entire house with copper and all the DWV with ABS. But I never did PEX, just figured I wouldn't need to know how as long as I could sweat stuff together, plus I didn't care to invest in the expensive tools.

Well I am now doing a kitchen/laundry remodel and I'm thinking about doing some PEX. I did some research and learned all about Type A and Type B, and I looked at some manual tools for Type A for around $130. (I have decided to stick with Type A). I'll need to go under the house and tee into some copper and come off with PEX for a recirc pump, relocate the laundry plumbing a couple feet and relocate the kitchen sink plumbing a couple feet as well as run a line for an ice maker box in the wall. PEX would be easier to do as there are some challenges coming up from under the house and around some major structural stuff. Plus now that the tools are affordable, and copper is so high, I'd just like to add it to my skills. I also have a couple rentals that will be needing some re-piping in the future.

What do you think? Is it as easy as it looks? I am the type to research everything fully and try to do it right but are there pitfalls I may not know about?

One of my first questions is angle stops. In the kitchen I will use copper stub outs and compression stops but the recirc pump will be in the wall behind a small tub access door and no room for stub outs so I am wondering what's the best way to put angle stops directly on the PEX? Do people actually use Shark Bite angle stops or is that a bad idea?
 

Reach4

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PEX must be supported every 32 inches horizontally.

Do not attempt to connect to a fitting with a manual expansion tool if the PEX is wet.
 

CENTRALFL

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With black Friday coming up, maybe wait for a deal on one of the PexA tools? I haven't used one of the manual tools, only the Milwaukee M12 one, but from several videos the consensus is that if you are doing more than a couple connections, it's worth getting the tool. Especially since the automatic tools auto-rotate the head.

I got mine from "Factory Authorized Outlet" on eBay certified refurbished for 300 after some eBay coupon, for the bare tool. Home Depot had some promotion on one of their M12 screwdrivers that came with 2 batteries for 80. So 380 all in, and you can always resell it when done. Just an option.
 

JohnCT

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I looked at some manual tools for Type A for around $130.

In my opinion, you would wish you were back sweating copper if you were limited to installing PEX with a manual expander (unless you have three working arms). And FWIW, some (most?) PEX B manufacturers certify their B for F1960 expansion like A pipe.

I'm an amateur and own a Milwaukee M12 expander with 1/4" and 1/2" heads.

EDIT: oops, 3/4" head not 1/4"! Thanks Reach for the PM. Brain fart I'm going to attribute to aging.. :p

John
 
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bigb56

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Hmm, I already have a lot of M12 stuff. I see a refurbished one on ebay for $219 but it doesn't look like it comes with any heads
 
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