Submersible pump in cistern.

Discussion in 'Pumps and Tanks Well Forum & Blog. Water is life.' started by greenmonster123, Aug 21, 2017.

  1. greenmonster123

    greenmonster123 Member

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    I need to have a 10,000 gallon cistern installed for an irrigation system. Water will be delivered via tractor trailer. I want to use a submersible pump but I have never installed one in a tank. Can I lay it on its side in the bottom of the tank? I have heard of flow inducing sleeves, does that apply here? If so could anyone explain this ? I have only ever installed pumps in well casings. Thanks
     
  2. valveman

    valveman Cary Austin Staff Member

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    Yes you can lay it on its side. The shroud is needed to cool the motor, and makes a good place to lay the pump on. You can use a couple extra pieces of 4", 100# sewer pipe after making the shroud to use as a cradle to lay the pump on the bottom of the tank.

    shroud 3 pics.jpg

    Horizontal Bracket for Sub.jpg
     
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  4. greenmonster123

    greenmonster123 Member

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    Thanks that is exactly what I am looking for. Was thinking of wiring a simple float switch to shut down the pump in a low water situation. Any recommendations on a switch?
     
  5. valveman

    valveman Cary Austin Staff Member

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    Just use a Cycle Sensor to cut the pump off if the tank runs dry. Then you don't have any float switch to mount.
     
  6. greenmonster123

    greenmonster123 Member

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    Thanks again. We are getting salt water intrusion as the house is right on a bluff overlooking the bay. The cistern, pump system, alterations to irrigation system is going to cost every bit of $50,000. Not to mention the weekly water deliveries at $600 a piece.
     
  7. Smooky

    Smooky In the Trades

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    If I was you, I believe I would invest in drought tolerant landscaping.
     
  8. greenmonster123

    greenmonster123 Member

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    If it was my house I would but this is for a customer. And they have more money than sense
     
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  9. craigpump

    craigpump In the Trades

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    Trickle down economics at its best..

    I like using a 4" abs seal & 4" sch 4PVC for a flow inducer sleeve. Works great/looks & sounds expensive.
     
  10. greenmonster123

    greenmonster123 Member

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    Do you remove the check valve and install one vertically on the drop pipe?
     
  11. craigpump

    craigpump In the Trades

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    You can leave the original & put one vertically
     
  12. valveman

    valveman Cary Austin Staff Member

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    I work with some resorts in Cancun that have salt water intrusion like that. The driller figured out how to cement off the upper section of the well and greatly reduced the salt intrusion, which now works fine for irrigation. Everything else goes through the largest RO system I have even seen. Then we have booster pumps with CSV's to supply the RO water to the resort, just like supplying a little city.
     
  13. Edward Encarnacion

    Edward Encarnacion New Member

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    Valveman, can you tell me what is the name of that black product you used around the pump?

    Captura de pantalla 2018-04-11 a la(s) 10.36.23.png
     
  14. valveman

    valveman Cary Austin Staff Member

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    It is called pipe wrap. But it is just regular electric tape that is 3" wide. You can use regular electric tape, it just takes a lot of it.
     
  15. Edward Encarnacion

    Edward Encarnacion New Member

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  16. Reach4

    Reach4 Well-Known Member

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    Edward, please post a photo of your assembly. We could use an example photo of of a horizontal bottom-sitting assembly that has the flow inducer (sleeve) in place.

    I would comment that the PVC for the flow inducer can be the thinner stuff, and that is advantages when putting the pipe into a 5 inch casing, and trying to clear a pitless or other hardware. I think that green pipe shown is solvent weld D2729 sewer pipe. It is cheap and available many places locally.

    For a cistern, you could still use the thin stuff. But if schedule 40 is more available, you could go that way. However since it is less flexible, you may have to cut more notches to get enough flex.
     
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