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small capacity 12v pump for 60m well

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  • small capacity 12v pump for 60m well

    The water level of my well with pvc pipe is only 6-12 meter. At the end of the pipe i put a footvalve and it works fine with this small 12v pump, ofcourse solar powered. Ok,not so many liters per minutes but i take that fro granted.

    my question is will it work also when the well is 60m deep. Using a footvalve the waterlevel is always on top. Will the footvalve also work when the well is that deep?
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  • #2
    6 to 12 meters is a far cry from 60 meters. If your flow is minimal now, it will be nonexistent at 60 meters. you will likely need a more powerful pump. You could consider a 24 volt pump. are you running this pump straight from a solar panel or array? If running from battery, why did you chose 12v? 12 volt pumps are very limited.

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    • #3
      Im running this pump with a chargecontroller and battery. This small pump is rated 80 psi.
      Because i use a footvalve there is always water on top of the wellpipe. Im asking above question cause a friend want to use the same pump as i have and his well is 60m.

      will the footvalve also open when the pipe is 60m deep assuming that there are no leaks/air.
      Last edited by fivewin; 06-16-2017, 01:45 PM.

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      • #4
        again, this is very unlikely to work at 60 meters, No, the foot valve will be under more pressure than a 12 volt pump can displace.

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        • #5
          Theoretically it is possible to create suction up to 10.3 meter = equal to -1 bar absolute vacuum
          Most of the time this is not possible
          More realistic is 6-7 meter very good pump 7-8 meter
          A water column of 10 meter gives a static pressure of 1 bar = equal to 14.7 PSI
          60 meter will give 6 times more
          No way the foot valve will open

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          • #6
            for 60m you need to use a submersible pump. you cannot suck water that high, you get vaporlock or something like that.
            Powerfab top of pole PV mount (2) | Listeroid 6/1 w/st5 gen head | XW6048 inverter/chgr | Iota 48V/15A charger | Morningstar 60A MPPT | 48V, 800A NiFe Battery (in series)| 15, Evergreen 205w "12V" PV array on pole | Midnight ePanel | Grundfos 10 SO5-9 with 3 wire Franklin Electric motor (1/2hp 240V 1ph ) on a timer for 3 hr noontime run - Runs off PV ||
            || Midnight Classic 200 | 10, Evergreen 200w in a 160VOC array ||
            || VEC1093 12V Charger | Maha C401 aa/aaa Charger | SureSine | Sunsaver MPPT 15A

            solar: http://tinyurl.com/LMR-Solar
            gen: http://tinyurl.com/LMR-Lister

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