PEX sizing rough in - Does this look correct and a few basic questions?

[Schibig87]

Hello You all were awesome helping me with the DWV portion of my DIY project.
Now time for the water line rough in.
Been reading the threads regarding PEX.
I calculated the pipe sizing by the 75% method. Not sure if that is accurate or not. I attached the diagram and home layout below.
I am on a well (pumps 30 GPM) currently set at 60 PSI - 1 1/4 inch pipe running approx. 70 feet to Stem Wall.
I plan to branch off for 2 hose bibs prior to the main shut off ( I can turn off water in pump house for whole house and yard )

My questions:

1. PEX A or B - what is most DIY user friendly. I would be using manual expansion tool for A.
2. Would you run 1 or 1/2 inch PEX to the hose bibs?
3. Would I go 1" into 50 gal hybrid hot water tank then 3/4 out to system or 3/4 into tank as well.
4. Free standing tub- 1/2 inch inlets or 3/4? Is there much fill time difference? Thinking faucet needs to accommodate that size increase and could equate as cost increase?
5. If using PEX B is determined from question 1- would it be best to size up the main trunks?
6. What is the best brand for PEX and fittings? I read a lot about Uponor woes...
7. Best economical place to purchase the plumbing supplies.

The home footprint is fairly small- 1000 ish sq feet and one person - two max for water utilization.

Hope this makes sense. UPC in Lewis County WA.

Many thanks!,
Patty

 

[Reach4]

I would tee off the supply to the bathroom hot right after the WH. Tee off the cold early too. To the bathroom run 3/4 to the cold and 1/2 to the hot.

You don't want the washing machine pulsing on and off to be affecting the shower.

Ideally you would run 1 inch before the tees, especially if using PEX B.

 

[Sponsor]

 

[Schibig87]

I would tee off the supply to the bathroom hot right after the WH. Tee off the cold early too. To the bathroom run 3/4 to the cold and 1/2 to the hot.

You don't want the washing machine pulsing on and off to be affecting the shower.

Ideally you would run 1 inch before the tees, especially if using PEX B.

Thank you!

 

[JohnCT]

Personally, I would never use a manual expander for A (or B) as I only have two arms.

Right now on ebay there is a brand new M12 kit with three expansion heads, two bats, a charger, and a case for $355 including shipping.

Milwaukee 2474-22 Expansion Tool Kit for sale online | eBay

Find many great new & used options and get the best deals for Milwaukee 2474-22 Expansion Tool Kit at the best online prices at eBay! Free shipping for many products!

www.ebay.com

The time the powered tool will save plus the improvement on expansion and rotations is well worth it. You can always sell it for about what you paid for it but I'll bet you'll keep it just to have after you're done.

John

 

[Schibig87]

Personally, I would never use a manual expander for A (or B) as I only have two arms.

Right now on ebay there is a brand new M12 kit with three expansion heads, two bats, a charger, and a case for $355 including shipping.

Milwaukee 2474-22 Expansion Tool Kit for sale online | eBay

Find many great new & used options and get the best deals for Milwaukee 2474-22 Expansion Tool Kit at the best online prices at eBay! Free shipping for many products!

www.ebay.com

The time the powered tool will save plus the improvement on expansion and rotations is well worth it. You can always sell it for about what you paid for it but I'll bet you'll keep it just to have after you're done.

John

Thank you for this input and link!
Makes sense
do you have a preference of Expansion vs Crimp?
Brands?

 

[JohnCT]

Thank you for this input and link!
Makes sense
do you have a preference of Expansion vs Crimp?
Brands?

I like expansion as I think there are two advantages - less flow restriction and a simpler more reliable seal between the pipe and fittings. With a crimp system, the pipe is forever trying to push away from the fitting whereas with expansion the pipe is forever trying to tighten itself onto the pipe.

Personally I would use either Rehau for PEX A or Sioux Chief for PEX B (which is also F1960 certified for expansion like type A is).

I would also use "sticks" instead of coils and not bend the pipe into 90s. Even though it's more connections and a tiny loss of flow, I would use 90 degree fittings as many of the (admittedly rare) PEX failures seem to occur more often on bent radius'.


John

 

[Schibig87]

I like expansion as I think there are two advantages - less flow restriction and a simpler more reliable seal between the pipe and fittings. With a crimp system, the pipe is forever trying to push away from the fitting whereas with expansion the pipe is forever trying to tighten itself onto the pipe.

Personally I would use either Rehau for PEX A or Sioux Chief for PEX B (which is also F1960 certified for expansion like type A is).

I would also use "sticks" instead of coils and not bend the pipe into 90s. Even though it's more connections and a tiny loss of flow, I would use 90 degree fittings as many of the (admittedly rare) PEX failures seem to occur more often on bent radius'.


John

Thank you

 

[John Gayewski]

Most homeowners use cich clamps as it's one tool for the three main sizes. Pro's use pex A becuse it's slightly better and easier to use with the right tools.

Your sizing isn't going to matter much if your longest run of piping is less than 150'or so.

 

[Schibig87]

Most homeowners use cich clamps as it's one tool for the three main sizes. Pro's use pex A becuse it's slightly better and easier to use with the right tools.

Your sizing isn't going to matter much if your longest run of piping is less than 150'or so.

Hi,
Are the Cinch rings & tools easier to use than crimp? Do they potentially provide a better seal?
If I were to use a Milwaukee M12 tool as a DIY'er would it be hard to navigate?

I chuckle because this place is pretty small and all fixtures in one area & I tend to compare it to a 3 story mansion.
The longest run is to the kitchen sink and apprx. 75 feet if that.
I appreciate your input!!
Best,
Patty