Can a pressure tank and pump start relay be wired to share a pump?

Discussion in 'Irrigation' started by soafone, Aug 15, 2012.

  1. soafone

    soafone LawnSite Member
    Posts: 29

    I have a job in the country with a well and pump in the well. Rather than tapping into the indoor plumbing after the pressure tank for the sprinkler system, could I not tap in between the pump and pressure tank and somehow wire the pump (in parallel?) so I may have a pump start relay control the pump?
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  2. AI Inc

    AI Inc LawnSite Fanatic
    Posts: 25,233

    why would you want to?
     
  3. soafone

    soafone LawnSite Member
    Posts: 29

    So the pump would remain constantly on rather than cycle on/off and the pressure would not fluctuate between 30/50 lbs.
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  4. soafone

    soafone LawnSite Member
    Posts: 29

    Or could adjustments just be made at the tank's pressure switch to achieve the same result of the pump running constant for the sprinklers?
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  5. greenmonster304

    greenmonster304 LawnSite Gold Member
    Posts: 3,042

    You need to match your zones to the pump out put
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  6. soafone

    soafone LawnSite Member
    Posts: 29

    Yes, of course, but that has nothing to do with how the pump is started/stopped.
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  7. greenmonster304

    greenmonster304 LawnSite Gold Member
    Posts: 3,042

    It has everything to do with this post
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  8. Wet_Boots

    Wet_Boots LawnSite Fanatic
    Posts: 46,966

    You must find the steady-state output of the pump, and that means running it closer to 45-65 than 30-50
     
  9. irritation

    irritation LawnSite Gold Member
    Posts: 3,192

    Yes, I've done it several times.

    http://www.wplawinc.com/LiteratureRetrieve.aspx?ID=73160
     
  10. Wet_Boots

    Wet_Boots LawnSite Fanatic
    Posts: 46,966

    Small problem with an outdoor tap in cold climates is the system shutoff valve has to be located below the frost level. Add the complications of a backflow preventer and a strainer, and the whole idea goes down the crapper.
     

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