Pex

[o1marc]

What's the tighest radius PEX can handle?

[djdalfaro]

Originally Posted by o1marc

What's the tighest radius PEX can handle?

https://www.pexuniverse.com/pex-tubing-technical-specs

8xOD

[o1marc]

Originally Posted by djdalfaro

https://www.pexuniverse.com/pex-tubing-technical-specs

8xOD

So 4".

[djdalfaro]

Originally Posted by o1marc

So 4".

You're using 3/8" PEX? That's pretty small.

[o1marc]

Originally Posted by djdalfaro

You're using 3/8" PEX? That's pretty small.

You said 3/8" not me. I'll be using 1/2" for heating the floor. That's why I needed Radius/diameter to know how closely I can line them up.

[PNW_Steve]

Edit: Duplicate info

[djdalfaro]

Originally Posted by o1marc

You said 3/8" not me. I'll be using 1/2" for heating the floor. That's why I needed Radius/diameter to know how closely I can line them up.

1/2" PEX tubing has an OD of 5/8" which requires 5" radius.

[joeblack5]

Marc, check pics of our floor heat, we put the heat spreaders pretty close together and by running loops in parallel you will have less tight curves. Most low power hydronic heating pumps are better on volume then on pressure so reducing the length and getting several loops in parallel will do a better job. Also in case of a leak you can shut one loop off without loosing all the heating .


later J

[o1marc]

Originally Posted by joeblack5

Marc, check pics of our floor heat, we put the heat spreaders pretty close together and by running loops in parallel you will have less tight curves. Most low power hydronic heating pumps are better on volume then on pressure so reducing the length and getting several loops in parallel will do a better job. Also in case of a leak you can shut one loop off without loosing all the heating .


later J

Link?

[joeblack5]

Marc,

http://www.skoolie.net/forums/f11/no...lie-18128.html somewhere in the last 5 pages


Later J

[joeblack5]

Marc, sorry , page 37

[o1marc]

Originally Posted by joeblack5

Marc, sorry , page 37

Got it.
In the future it might be easier to use post# as we have our threads set up differently. Yours reads first post first, mine is set to show last post first, so your page 37 is different than mine.

[somewhereinusa]

I made mine just a tad tighter, somewhere around 3.5 inch I think. That was in the floor. For general plumbing I used the radius thingys I believe they are 4 inch.

[Ronnie]

I saw in Lowe's they have the metal radius thingys for tight bends in PEX. I do believe you are correct at 4" for the 1/2 tubing.

[o1marc]

Originally Posted by Ronnie

I saw in Lowe's they have the metal radius thingys for tight bends in PEX. I do believe you are correct at 4" for the 1/2 tubing.

I originally asked what the tightest radius for PEX was. The reply was sort of correct. I had asked for radius and the answer was diameter. My reply was to clarify the correct radius. That post had a link that showed the correct radiuses It showed an 8"diameter for 3/8" and 10" diameter for 1/2".
I plan on 1/2" and saw the chart for the correct number.
I checked Lowes and saw 2 piece plastic corner pieces, 2pcs. being one for 2 different lines to make a 90° bend, didn't show them together for a 180° bend. Do they have anything for a 180°? I don't need one, should lay tight in the distribution strips and tighter in the radius in the rigid foam.

[Ronnie]

Funny I was in Lowes this evening, would have looked closer to get better details. I do not remember seeing a 180, just the 90's.