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Old 02-17-2017, 10:56 AM   #1
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Rigid Copper for Burial


Can I bury Type L rigid copper and not worry about it? Not under slab or structure. No loads on it.


No freezing here, soils are neutral.

This is to replace the 2 inch PVC water supply line that comes out of my meter at the street. Pressure coming out is 160-220 PSI, and I'm tired of repairing joints along the 190 foot route into the house every few years.

In the last 16 years, I've repaired about 8 joints, even ones that I thought I did perfectly.

I want to go copper out of the meter and up the short slope, then install a reducing valve (regulator) to step the pressure down and connect back to the 2 inch PVC.

Thanks!
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Old 02-17-2017, 11:35 AM   #2
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Re: Rigid Copper for Burial


I would run polyb in one continuous piece with no joints.
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Old 02-17-2017, 01:44 PM   #3
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Re: Rigid Copper for Burial


Considering the pressure 3/4 inch K copper would be a safe bet.
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Old 02-17-2017, 03:26 PM   #4
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Re: Rigid Copper for Burial


Agreed, but it was hard to find. Not stocked at HD, Lowes and such.

Found some about 30 miles up the road.

Thanks!
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Old 02-17-2017, 04:26 PM   #5
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Re: Rigid Copper for Burial


Why copper!
That would have to be about 4 times if not far more than the cost and nothing to gain by using copper.
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Old 02-17-2017, 05:04 PM   #6
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Re: Rigid Copper for Burial


Ayuh,.... I'd run the plain ole black poly pipe, or Pex, over copper everyday of the week,....
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Old 02-17-2017, 05:04 PM   #7
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Re: Rigid Copper for Burial


I suspect there is a reason the PRV can't be first out of the meter but I don't know why.
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Old 02-17-2017, 06:20 PM   #8
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Re: Rigid Copper for Burial


Black polyethylene pipe is available in 200 psi version.
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Old 02-19-2017, 05:23 PM   #9
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Re: Rigid Copper for Burial


Thanks for your replies. Right or wrong, smart or not, I went with Type K copper.

I this were new, I would consider poly, but to retrofit, I'd be digging up 200 feet of trench and 40 feet uphill. Not happening.
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Old 02-20-2017, 08:27 PM   #10
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Re: Rigid Copper for Burial


Braze the joints. On k copper with that much pressure you'll have to, you'll need an experienced plumber, too much heat or not enough and you'll have problems
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Old 02-20-2017, 11:02 PM   #11
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Re: Rigid Copper for Burial


Quote:
Originally Posted by Javiles View Post
Braze the joints. On k copper with that much pressure you'll have to, you'll need an experienced plumber, too much heat or not enough and you'll have problems

Too late. We'll see how long the soldered joints hold up.
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