Pex tubing water amount??
- Thread starter Larry4
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Seaneys
New Member
Well, a quick scan if sites indicates the ID is 0.475 inches...
The volume would be Vpex = Lpex * Pi * (0.457)**2 / 4...
I do not recall the number of cubic inches in a galllon off hand.
Stee
The volume would be Vpex = Lpex * Pi * (0.457)**2 / 4...
I do not recall the number of cubic inches in a galllon off hand.
Stee
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Sjsmithjr
In the Trades
1 cubic inch is about 0.004 gallons. To answer the original question, it would take about 118 feet of 1/2 inch pex to hold 1 gallon of water.
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99k
Radon Contractor and Water Treatment
a=3.14*.24*.24
a=.181 sq in
1 gal= 231 cu in
231/.181 = 1276 inches or 106 ft of pipe
a=.181 sq in
1 gal= 231 cu in
231/.181 = 1276 inches or 106 ft of pipe
Sjsmithjr
In the Trades
99k
Radon Contractor and Water Treatment
Hey Sam, the numbers are close enough for me
I used a pipe I.D. of .475 (rounded to .48 ) which was given ... I did not actually measure it.
Sjsmithjr
In the Trades
Everybody's a winner...
So I got to work and pulled a spec sheet for Zurn pex. The i.d. for 1/2" pex is given as .475 inches (118 feet) with a fluid capacity of 0.0092 gal/ft (108 feet).
I suppose the correct answer is that if you need something to measure a gallon of water with, don't use small diameter pex tubing
I think I'll be better off when things pick up a bit and I stop spending time on such trivial matters...
So I got to work and pulled a spec sheet for Zurn pex. The i.d. for 1/2" pex is given as .475 inches (118 feet) with a fluid capacity of 0.0092 gal/ft (108 feet).
I suppose the correct answer is that if you need something to measure a gallon of water with, don't use small diameter pex tubing
I think I'll be better off when things pick up a bit and I stop spending time on such trivial matters...
99k
Radon Contractor and Water Treatment
Yes, this is a sure sign that both of us have too much time on our hands
Larry4
New Member
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Thanks for all the info. I was asking because I am installing a pex floor system in an addition. I wanted to check the amount of water in the tubing to make sure I have plenty of capacity in the storage tank. This is my third and largest job of this kind. The others have worked out fantastic. I have installed them with a water heater where the customer doesnt have a boiler. Of course all the bells still have to go on pump, expansion tank, relay kit on and on. but in the end they are working great.
Thanks ,
Lar
Thanks ,
Lar
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