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Old 02-13-2015, 01:39 PM   #1
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Running pipe underground


Hi, plumbing noob here with (hopefully) a simple question. My wife and I are building and outdoor BBQ/cooking area and we would like to have access to water out there without having to get out the garden hose and run it across the driveway. I'd like to run underground pipe to a spigot, and later a sink, but do not know what kind of pipe I should be using.

Here is where the water enters the house, which is directly across the driveway from where we're trying to get.



I could easily remove the faucet, install a T ahead of it, and come off of that, under about 25' of dirt driveway, and end up where I want to be. My question is how to accomplish this.

The outdoor plumbing is galvanized, but I've read that I shouldn't be using that anymore because it corrodes.

Copper is ridiculously expensive, and I don't see how that wouldn't just turn to dust underground either.

PVC is out because we'll be using this water for food preparation, so it has to be drinkable, and afaik, PVC is not safe to carry drinking water.

From the small amount of searching I've done, it seems like "black poly pipe" comes up a lot as a suggestion. The only type of "black poly pipe" I'm familiar with is something like this



which I've always associated with irrigation or drainage pipe. Is this really what I should be using for my water supply? I'm also leery about using it because it seems so flimsy, like it's liable to break or abrade from shifting ground, rocks, etc.
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Old 02-13-2015, 01:45 PM   #2
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Ayuh,.... Nothin' wrong with that black plastic pipe for supply,...

This house I'm in uses it, underground,...

Another newer option would be Pex plastic tubin',...
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Old 02-13-2015, 01:51 PM   #3
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I think it's funny that your main comes in above ground

...now on to your questions.

PVC is ok for cold water. CPVC is fine for both hot and cold.

Either way, you have to tie into your galv. first then adapt to something else. And just from what I see, it looks like the easiest way to do that is like you said...take off faucet, add Tee, put faucet back on.

AFAIK, copper can be buried, but if you're worried about it, there are certainly other options out there. One being PVC/CPVC.

Pex is also an option in most places....but Cali isn't "most places" , so I have no idea. In theory, at least, it's an option.
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Old 02-13-2015, 02:04 PM   #4
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What is normally used to attach the black pipe to metal? Barb fitting + hose clamp? Sorry if this seems like an obvious question.

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I think it's funny that your main comes in above ground
"Freeze" is not a word we know here


Last edited by Syberia; 02-13-2015 at 02:14 PM.
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Old 02-13-2015, 04:15 PM   #5
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Quote:
Originally Posted by Syberia View Post
What is normally used to attach the black pipe to metal? Barb fitting + hose clamp? Sorry if this seems like an obvious question.
Ayuh,.... Exactly,.... Barb to threaded fittin's, 'n double hose clamps, warmed abit when tightened,...
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Old 02-15-2015, 08:28 PM   #6
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Quote:
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Ayuh,.... Exactly,.... Barb to threaded fittin's, 'n double hose clamps, warmed abit when tightened,...
Warmed? Why? How?
Nothing I will ever do, but just curious.
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Old 02-15-2015, 10:07 PM   #7
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Quote:
Originally Posted by Syberia View Post
What is normally used to attach the black pipe to metal? Barb fitting + hose clamp? Sorry if this seems like an obvious question.


"Freeze" is not a word we know here

wish we could say the same thing.. and it warmed up today -5
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Running pipe underground-001.jpg   Running pipe underground-009.jpg   Running pipe underground-010.jpg  
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Old 02-16-2015, 04:12 AM   #8
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wish we could say the same thing.. and it warmed up today -5
Man, it's like summer in those pictures. I have 3' of snow in my front yard and a 1.5 mile wide frozen lake in the back yard. You ought to see my 31 pound dog play fetch; she bounds through the snow, and then tunnels into it to find the throw toy. It is just like foxes hunting for mice on nature shows.
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Old 02-16-2015, 06:59 AM   #9
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Maybe I should move to Syberia.
Springville, NY (14141) Weather
Wind Chill Warning until Mon, 10am
7:25 am EST
Weather Condition Icon
-20°F
Feels Like -32°
Partly Cloudy
Wind
S 4 mph
Humidity
83%
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Old 02-16-2015, 09:04 AM   #10
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Quote:
Originally Posted by Toller View Post
Warmed? Why? How?
Nothing I will ever do, but just curious.
Ayuh,.... When the fittin' is assembled, the clamp is in-place, 'n snug,...

The area of the clamp on the barb is warmed with a torch, 'n then retightened,....

It'll allow the black pipe to conform to the striations of the fittin', so's ya don't have any leaks,....

With the comments 'bout local temps,...
Here this mornin', it was 66° Below Freezin',...
-34°, static temp, 'n with the ever so slight breeze, wind chill was -40°,.....

Right now, just before 10am, it's -22°, with an expected high today of Zero°,...

It ain't been up to 32° in well over 6 Weeks,....
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Old 02-16-2015, 10:17 AM   #11
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Quote:
Originally Posted by Bondo View Post
Ayuh,.... When the fittin' is assembled, the clamp is in-place, 'n snug,...

The area of the clamp on the barb is warmed with a torch, 'n then retightened,....
Would you do that on a garden hose repair also, with a fitting and a clamp?
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Old 02-16-2015, 12:26 PM   #12
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I've repaired a garden hose before and yes, I've had to use a heat gun or the hose does not fit all the way over the barb. It softens the rubber just enough so it slides on snugly.
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Old 02-16-2015, 05:17 PM   #13
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Quote:
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Would you do that on a garden hose repair also, with a fitting and a clamp?
Donno, I don't, as most garden hose I see is soft enough to conform, at the temps I'm doin' it,....

But I see no reason it wouldn't work, pretty much the same as the black plastic supply pipe,...
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Old 02-17-2015, 01:37 AM   #14
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Quote:
Originally Posted by Bondo View Post
Ayuh,.... Nothin' wrong with that black plastic pipe for supply,...

This house I'm in uses it, underground,...

Another newer option would be Pex plastic tubin',...
Hi Bondo,

The picture of the coiled black tubing that Syberia posted looks like the kind used for drip irrigation. If it's like the kind I'm using for our drip system, the walls are very thin and I think it could collapse or be pinched under the weight of the dirt if buried.

Just my guess after working with my drip irrigation system. Trying to learn,

Thanks,
HRG
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Old 02-17-2015, 06:36 AM   #15
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Quote:
Originally Posted by Bondo View Post
With the comments 'bout local temps,...
Here this mornin', it was 66° Below Freezin',...
-34°, static temp, 'n with the ever so slight breeze, wind chill was -40°,.....
.
Ahh yes. You're getting a taste of our Winters!

It's quite interesting... -40 (static) is what we normally get. In fact last Winter we hit -56. This year I don't think we've hit -40 once. We've been puddling around at -15 to -20 or so. It's been unseasonably mild for us.

Welcome to the wonderful world of climate change I guess!
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