Well to Storage Tank Shut Off

Discussion in 'Irrigation' started by txirrigation, Oct 10, 2011.

  1. Just for curiosity sake (remember I'm not a well man) why is a second pump strictly for the irrigation out of the question? Cost? Space?
     
  2. Mike Leary

    Mike Leary LawnSite Fanatic
    Posts: 21,896

    Well, I, for one, would install two pumps so as to have high pressure for irri and low for household.
     
  3. Wet_Boots

    Wet_Boots LawnSite Fanatic
    Posts: 47,301

    If he has an air break before the irrigation storage tank, it would follow that a second pump would be drawing from the tank, just for the irrigation.
     
  4. txirrigation

    txirrigation LawnSite Senior Member
    from Texas
    Posts: 977

    Well will refill at 15-17 gpm. I am limiting the refill flow to the irrigtion tank to 6 so the fresh tank will refill faster than the irrigation tank. That way during holidays when each house is full of people the fresh water will always be ready.

    There will be two pumps, one for fresh and one for irrigation. The pumps will also have thier own supply tanks.
     
  5. Wet_Boots

    Wet_Boots LawnSite Fanatic
    Posts: 47,301

    Is the domestic use more than the 15-17 gpm can handle?
     
  6. txirrigation

    txirrigation LawnSite Senior Member
    from Texas
    Posts: 977

    No. But that is assuming the irrigation storage tank is not refilling.
     
  7. Wet_Boots

    Wet_Boots LawnSite Fanatic
    Posts: 47,301

    That is the idea behind a pressure-sustaining valve. It only is open when the upstream pressure is above a certain point, so the domestic side never gets starved for water.

    From what you describe, you only need an air-break-fed tank for the irrigation. Maybe some additional pressure-tank capacity on the original well, for the benefit of domestic use.
     
  8. Mike Leary

    Mike Leary LawnSite Fanatic
    Posts: 21,896

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