My Industrial Cabin Build

   / My Industrial Cabin Build #2,521  
I've never seen that type of connections on PEX before. What are they called?

Where I work, most plumbers use the copper rings that you squeeze tight over the PEX for a permanent seal. You need to have the special tool to do this, and it's kind of cumbersome to get it into place, but it's by far the best choice to do it once and never worry about it again. The stainless clamps are used by some because they are easier to get on, but they are not as strong and will sometimes leak.

In almost every new house that I've been in, the PEX is color coded. Red for hot, blue for cold. There is a manifold for each color. Then a line runs all the way from that easy to get to manifold, to where the water is needed. For a bathroom, that's 2 half inch hot lines and 3 half inch cold lines. No manifolds along the way, no manifolds in the wall of the bathroom or in the attic above it. This ensures that there will never be a leak. When a manifold is used somewhere along the way, that's where you look for the leaks. It's a lot cheaper to run a few extra lines that to fix a leak in ten years. Adding manifolds to PEX pretty much defeats the strongest selling point of PEX. No connections or breaks in the lone from start to end.

I've replaced a few plastic manifolds, and I'm surprised that they still exist. I'm even more surprised that anybody would buy them over copper manifolds. They like to crack where the nipple connects to the main body of the manifold.

Are those slip on fittings?

Why did you run white PEX instead of color coding it with blue and red?

The good thing about having all this on video is that you will know where to look if you ever have a problem.

Where the plastic manifolds and fittings a lot cheaper the copper and brass?

Why didn't you do the vent lines before the PEX? It's a lot easier to bend PEX around a vent line then it is to squeeze a big PVC pipe around a bunch of PEX already in the wall.
 
   / My Industrial Cabin Build
  • Thread Starter
#2,522  
I am starting the vent lines today. I have been kind of avoiding it. Once I get started I am sure that it wont be too bad. Like a lot of things, getting started is the hardest part.
These are expansion fittings. It only works for PEX-A and for Zurn pex B. I have never used the Zurn. Whenever I have used pex-b I have used the Sharkbite press to connect fittings. The ones that you basically just slide on. With expansion fittings the pipe itself gets expanded and shrinks back. The fitting doesn’t restrict the flow significantly because it has the same internal diameter as the pipe. The tool is pricey but very easy to use. The plastic manifolds are cheaper but the reason I am using them is that around here, the well water mineral content eats thru copper. It isnt lime acid or something. My parents had copper pipe and lived in that house for 30 years but from time to time my dad had to cut out a leaky pipe and replace it. Always corrosion. I figure the plastic is less likely to corrode. But, all the fixtures and all the turn-off valves are brass lots of fittings are available in brass. Manifolds are only available in brass or plastic.

There is a shortage of pex pipe in my area so the blue and red were not available in 1/2 inch except for pex-b.
 
   / My Industrial Cabin Build #2,523  
Appreciate hearing your reasoning for what you are doing. I like that you take the time to do the research what you are doing. It's interesting to me that you have done so many things on your house that I've never seen before.
 
   / My Industrial Cabin Build #2,524  
This is the manifold system i have in our motorhome and is used widely in the rv industry..

Viega ManaBloc distribution manifold - Viega LLC

https://www.viega.us/en/products/Pu...s/Viega-ManaBloc-distribution-manifold-3.html
They are a top of the line manifold system. Easy to plumb and make connections with copper compression rings. You can get the connection fitting kit at Lowes , etc for $100. I would not want a manifold inside of a wall ! As Eddie said...Pex is designed for home run lines, making the install much easier with less worry of leaks.

Maybe concentrate on getting the well pump plumbed and wired to the house. Then just install a hose bib temporarily so you have water inside the house ? Or

You have alot on your plate right now ! The cold weather will be here before you know it. I would want to get that exterior siding and trim installed and painted. Since you have a fireplace it will keep you warm so you can work inside.
 
   / My Industrial Cabin Build #2,525  
Some guys down here on the coast like to have hot water available to flush their outboards after being in the saltwater. It helps get the salt out better.
 
   / My Industrial Cabin Build #2,526  
I used the Viega Manabloc when I plumbed my shop-generally pretty happy with it.
IMG_1568.JPG
. Mine is located in the shop bathroom for ease of hookup. Did have to add foam board insulation between outside steel sheathing and Manabloc just to provide additional freeze protection ( shop is heated/cooled year round).

I did the outside hot/cold faucet for a couple of reasons- hot water pressure wash for vehicles and to be able to give the dogs a bath outside when they get stinky.
 
   / My Industrial Cabin Build #2,527  
I used the Viega Manabloc when I plumbed my shop-generally pretty happy with it.View attachment 709829. Mine is located in the shop bathroom for ease of hookup. Did have to add foam board insulation between outside steel sheathing and Manabloc just to provide additional freeze protection ( shop is heated/cooled year round).

I did the outside hot/cold faucet for a couple of reasons- hot water pressure wash for vehicles and to be able to give the dogs a bath outside when they get stinky.
This is the same manifold i have in the motorhome. Correct...i always drain it come winter and fill lines with rv antifreeze where it is parked in the unheated barn.
 
   / My Industrial Cabin Build
  • Thread Starter
#2,528  
I posted this video yesterday. We sheet rocked the mechanical room and put in the manifolds for water.

 
   / My Industrial Cabin Build #2,529  
I posted this video yesterday. We sheet rocked the mechanical room and put in the manifolds for water.

That is definitely a different way to go about PEX. You've researched everything you've done so far and tried to follow best practices, so I'm curious why you didn't do that for PEX and instead built some type of random manifold?
 
   / My Industrial Cabin Build
  • Thread Starter
#2,530  
I have not been able to find a pre made central manifold that is pex-A compression fitting type. They are all crimp style fittings which start off by restricting the water flow. So I made my own. If it turns out to be a problem I can always change it.
 

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