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# figuring glycol volume?

Member Posts: 1
How many gallons of fluid would I need to fill 4800 feet of 3/4 inch tubing for my heating system?

• Member Posts: 1
Total

• Member Posts: 203
1.89 gallons per hundred

feet of 3/4 pex. 48 x 1.89= 90.72 x 40 % glycol = 36.28 gallons. hope this helps.
• Member Posts: 424

Anyone know if there are some good conversion charts for pipe volumes in this site somewhere.??? Would be a handy place for them, and give me another reason to spend time in here, as if I need one. This place makes a nice little diversion to a busy schedule.

If you have copper pipe w/ id of 3/4" then the 110 gal. figure is what you want.
If you have 5.30 cubic inches per lf of 3/4" pipe x 4800 lf divided by 231 cubic inches per gal. you get 110 gal's.

Also the percentage of gylcol mix you need, all depends on the strength of the gylcol you have. 60%? 96%?

Steve
• Member Posts: 272
Pipe Chart & PG Volume

Steve
I have a chart for pipe size and volume that we publish for
our FireFighter PG product. Give me a Fax number & I'll send one over.

The PG question would be better answered over the phone. These questions usually lead to other questions.
800-678-6625 Ext 108

Drew
• Member Posts: 6,106
Try

Siggys "Design Studio" software. You can input boiler capacity, pipe size and length, fittings, and loop diameter and length, etc. It will give you total capacity and glycol %. Then you can size the expansion tank!

hot rod

• Member Posts: 34
Pipe/tube Volume

Jeff -
I'm never without my Grundfos Plumbing/Heating Handbook. My copy is from 1991. It lists inside diameters for copper, brass, plastic, and steel from 1/2" to 4".
Volume per foot in US gallons = (ID squared)x(pi/4)x 12/231. OK, so you knew that already.
- George
• Member Posts: 2,542

I wrote an Excel spread sheet that handles tubing up to
1-1/2" in diameter.

If you're interested in receiving it, you can send an e-mail to my company address which is [email protected] and I will be glad to send it to you.

Don't forget to include the e-mail address you want it sent to.

ME
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