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Old 06-11-2015, 12:54 PM   #1
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1968 26' Overlander
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Full Time: Water From House to Trailer

Looking for suggestions for running city water ~ 50' -70' to trailer. Was thinking 1" PVC (to limit friction loss) to a hose bib with a short hose to trailer. This would be buried in a trench in the yard. Questions:
  • Is PVC best material? PEX doesn't seem right since it's burried.
  • Do you think the 1" I.D. would make a difference?
  • Using garden hose now. Should I just upgrade my hose to drinking water safe and call it a day?
  • Is there a good thread in the Forum some where that would apply? I've looked but haven't had luck.

68' Ovrlndr

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Old 06-11-2015, 01:44 PM   #2
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If you are not concerned about frost, I would use a couple of drinking safe hoses and be done with it. The other solutions are likely to end up costing you more and being a hassle to install and maintain.

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Old 06-11-2015, 02:14 PM   #3
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1" line is overkill, 3/4 is fine for that distance.

PEX would be OK or ABS plastic which can be drained. PEX is not sunlight resistant so must be protected where it may see sunlight.

Hoses could be OK, but laying out in the sun will deteriorate and can burst. The water can get very hot in them too, if you want a cool drink.
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Old 06-11-2015, 02:45 PM   #4
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Either PVC or pex will work fine as long as it's protected from UV and protected from freezing. Both are used for supply lines in new construction. Pex has better freeze resistance and higher pressure rating. 3/4" should be fine but there is less friction loss in 1". That being said, unless you are filling a hot tub in your AS, go with 3/4". Everything associated with 3/4" is less expensive like fitting, insulation, etc.
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Old 06-11-2015, 08:33 PM   #5
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Pex is suitable for burial and is cost effective. I'd go with 3/4" diameter as suggested by others. Purchase in coil form rather than stick.

Good luck,


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Old 06-12-2015, 11:52 AM   #6
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Kevin, what's the ultimate end of this project? Are you planning a permanent parking place? If so, burying a water line is probably the best way to go. If you are looking for something temporary, stringing hoses is probably the cheapest. Either way, consider possible hazards. If you are burying the water line you will need to check for buried utilities in the way and will have to get below the frost line. If you are stringing hoses you will have to not only worry about UV exposure but also lawn mowers and tripping.
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Old 06-12-2015, 12:00 PM   #7
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1" PVC is plenty adequate. A 1" pipe gives you plenty of flexibility for later on - should you need it. Just make sure it's "schedule 40" - for strength.

In the Pacific Northwest, I bury my pipe 24" deep to prevent freezing. Also, 24" is below commercial rotor-tiller depth.

Unless you're using a frost-free hydrant, I prefer faucet location below ground level, inside a large, plastic water meter box. Cut a hole in the lid for hose access. Fill the box with insulation to prevent freezing.

FYI - When in doubt, over-engineering is always a standing order.


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