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Thread: Any recommendations or opinions on poly pipe to use on a long haul

  1. #1
    DIY Junior Member Faceman's Avatar
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    Default Any recommendations or opinions on poly pipe to use on a long haul

    Just researching, I don't know too much about the well business, but would anyone give me advice on what would likely be best option on piping for a new well

    likely going to be a 1/2hp or 3/4hp pump, between 160 - 180 feet deep

    the horizontal run from well head to house approximately 1100'

    Would it be risky to run the 1" poly pipe 100 psi with green stripe that far?

    What are the risks with long hauls and piping ?

    thanks

  2. #2
    In the Trades Texas Wellman's Avatar
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    I'm not a fan of poly pipe and never will be. That being said, if you do decide to use it, make sure you use at least 160 or 200 psi rated pipe, not 100 psi. I suspect that 100 psi being the standard here has a lot to do with my hatred of the stuff. If you do decide to use 100 psi, make sure you keep plenty of sharp shovels and digging tools handy because you will be doing plenty of repair work on a 1100 ft line. I think if you look hard enough you can find it in 500' or greater rolls which will reduce the connections.

    I have not looked at the specs so I'm not sure what the head loss would be on an 1100' run, but I would at least go with 1.25" or 1.5" pipe, depending on your flow requirements. Be sure to make your ditch as straight as possible and I would try to backfill with sand or such if at all possible.

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    In the Trades Tom Sawyer's Avatar
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    IIRC my pump which is a 3/4 / 10 has been hanging @ 220' on 160lb PE now for close to 30 years.

  4. #4
    Porky Cutter,MGWC Porky's Avatar
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    I wouldn't recommend 100" PE but we've used 160 and 200# PE in wells and water systems for years. I would consider using 1-1/4" on a 1100 ft run. 1" would be fine on the pump.
    Porky Cutter, MGWC
    (Master Ground Water Consultant)

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    DIY Junior Member Faceman's Avatar
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    Thanks everyone.

    Sorry for sounding na´ve here, trying to gain knowledge so not to waste money on my next attempt at a good well but let me ask a more generic question.

    I know a 1100' run from well to house will be pricey, what would be your thoughts on things to be concerned with? Risks? Ways to save on cost?

    Ie. My knowlegde of poly pipe is that one measure is a psi number. So what is this? Do I need to be c
    oncerned about pressure inside the pipe and/ or outside the pipe (pressure of the ground to bury pipe)

    This well will be for house, tub draws most water at about 3gpm.

    Ill take all advice, direct or indirect regarding my " 1100' haul from well risks".

    Thanks again

  6. #6
    Jack of all trades DonL's Avatar
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    Like Texas Wellman said "Be sure to make your ditch as straight as possible and I would try to backfill with sand or such if at all possible."

    I would go with 1.5 inch if you want a good flow rate, for that 1100 foot distance.

    The higher the pressure rating, the less chance that it will collapse under the shifting grounds weight.

    There is more to it than the pressure that it can hold under water pressure.

    It can get crushed, if driven over and the ground dirt shifting.

    I like schedule 40 PVC myself. Cost more but last a lifetime.


    Enjoy your project.


    DonL
    Theory only works perfect in a vacuum.

    Cyber Security Protection for Windows C:\ > WWW.WinForce.Net

  7. #7
    DIY Member gritres's Avatar
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    the chances of 160# poly being damaged merely by shifting earth are like one in a million. it's worth the extra cost over the 100# poly, not because you need it to sustain the water pressure but just for having thicker walls for general wear and tear during installation and future shovels that may hit it. if you trench it a good couple feet under the ground and pack earth back over it solidly ie no air pockets you won't have any trouble unless you're really driving heavy machinery over it. the other danger is freezing but i live in the subtropics and dont know crap about that. the ground pressure at that depth is inconsequential. the nice thing about poly is that for the size you will have the last amount of pressure loss assuming you make a nice straight trench, you dont have to mess with a bunch of couplings. PVC is great too, but it's really a personal preference and based on local prices. go with at least 1 1/4 and you wont need to worry about flow rate issues.

    just consider when somebody makes a geothermal loop where they've got thousands of feet of buried pipe they make it out of poly. it will essentially last forever just like the PVC and there's less to get wrong.
    you definitely could use 100# poly, you're not going to have over 100 pounds of pressure in that pipe ever, but it's sort of skimping it if you plan on having this thing operating for decades to come.

    i'd be more concerned about the well, moving water 1000 feet on land is relatively easy compared to digging over a hundred feet into the earth and hoping you get a steady water supply. make sure you talk to people in the area and aren't drilling a hole to nowheresville.

  8. #8
    In the Trades Texas Wellman's Avatar
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    Quote Originally Posted by DonL View Post
    Like Texas Wellman said "Be sure to make your ditch as straight as possible and I would try to backfill with sand or such if at all possible."

    I would go with 1.5 inch if you want a good flow rate, for that 1100 foot distance.

    The higher the pressure rating, the less chance that it will collapse under the shifting grounds weight.

    There is more to it than the pressure that it can hold under water pressure.

    It can get crushed, if driven over and the ground dirt shifting.

    I like schedule 40 PVC myself. Cost more but last a lifetime.


    Enjoy your project.


    DonL

    Actually Don the last time I priced sch 40 PVC to 160 or 200 psi poly the PVC was cheaper.

    I prefer sch 40 belled end pvc for all my buried applications.

  9. #9
    DIYer, not in the trades LLigetfa's Avatar
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    Quote Originally Posted by gritres View Post
    if you trench it a good couple feet under the ground...
    Around here we need to go much deeper to stay below the frost. I put my pitless and waterline 8 feet below grade.

  10. #10
    In the Trades Tom Sawyer's Avatar
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    Not sure what the advantages of PVC would be. It takes a whole lot more time to install it. There would be god knows how many joints to screw with and I just dont see a reason for not using PE

  11. #11
    General Engineering Contractor ballvalve's Avatar
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    Poly pipe down the hole, of course. at least 160 psi. Poly to the house especially if you can get a 1000' roll. But you NEED to know how to make the poly joints correctly.

    20' sticks of bell end PVC here are about .25 a foot vs. .57 cents a foot for poly.

    The PVC you can build on the surface and kick it in the hole the next day just like Poly. If its not in a road, a few inches of clean dirt cover is all you need before backfill.

    1'' will work especially if the tank is at the house. 1-1/4 isn't much more money in PVC.

  12. #12
    In the Trades Texas Wellman's Avatar
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    FIFY

    The glue only takes minutes to dry.

    Quote Originally Posted by ballvalve View Post
    Poly pipe down the hole, of course. at least 160 psi. Poly to the house especially if you can get a 1000' roll. But you NEED to know how to make the poly joints correctly.

    20' sticks of bell end PVC here are about .25 a foot vs. .57 cents a foot for poly.

    The PVC you can build on the surface and kick it in the hole the within minutes just like Poly. If its not in a road, a few inches of clean dirt cover is all you need before backfill.

    1'' will work especially if the tank is at the house. 1-1/4 isn't much more money in PVC.

  13. #13
    General Engineering Contractor ballvalve's Avatar
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    Well, thats of course true, but I hope you give it a good 10 minutes at least. But if you use good glue which is heavy set grey, I dont like to move it for at least an hour. And if he wants to really do it right, he'll pressure test it before it goes in the hole.

  14. #14
    In the Trades Texas Wellman's Avatar
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    I set PVC drop line on glue that dries in minutes. Five minutes is plenty for glue to set and be ready. As always, pressure test before you bury. I always use clear glue, I hate that colored stuff.

  15. #15
    General Engineering Contractor ballvalve's Avatar
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    Then you must really hate that purple primer which is even worse.

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