off topic question

Discussion in 'Irrigation / Sprinkler Forum' started by v1rtu0s1ty, May 25, 2007.

  1. v1rtu0s1ty

    v1rtu0s1ty DIY Senior Member

    Messages:
    176
    Location:
    Chicago IL
    Hi folks,

    I don't know where to ask this question. I was hoping you can shed some light. This isn't really for whole lawn sprinkler system. I'm thinking of buying a submersible pump which is 1/3 HP and capable of 22 gallons per minute according to the specs. What I am planning to do is submerge this pump in a 55 gallon plastic container filled with water, and then connect a garden hose with a sprinkler at the end. Will it the sprinkler be strong? I'm thinking of putting a maximum of 2 sprinklers only.

    The purpose of this is for the application of actively aerated compost tea(ACT) which I am brewing. You can see my videos of my AACT brewing at http://restricted.dyndns.org/aactbrewinglog.html

    That's the liquid that I'm planning to spread to my lawn using the submersible pump.

    So guys, please let me know if it's strong enough to drive 1 sprinkler head. I just want to easily apply it rather than walking back and forth with a 2gallon water garden can.

    Any help would be greatly appreciated.

    Thanks.

    Ron
  2. jimbo

    jimbo Plumber

    Messages:
    8,997
    Location:
    San Diego
    Typical submersible utility pumps are designed to move a lot of water, but not at sufficient pressure to operate a sprinkler head, which probably requites 20 PSI minimum, and would be better at 25 to 40 PSI.

    Look at the specs for the pump you want to buy. Look for the specs on head, which is in feet. Each 10' of head represents 4.4 PSI. SO, you would be looking for a head of 50' minimum, and probably wont find that in a submersible pump. They make sprinkler pumps to do this , but they are not submersible. You could go with a well pump. None of these are real happy about a lot of crud in the water.
  3. v1rtu0s1ty

    v1rtu0s1ty DIY Senior Member

    Messages:
    176
    Location:
    Chicago IL
    I can go with any solution as long as it can suck the liquid from the 50 gallon container and out to the sprinkler.

    I'm sorry but I did not understand what you mean by this.

    Thanks.

    Ron
  4. jimbo

    jimbo Plumber

    Messages:
    8,997
    Location:
    San Diego
    I was envisioning a lot of floating debris in your mixture, which can foul a pump. Perhaps I was wrong about that. If you filter it to remove sediment, there should be no problem. You can usually find a sprinkler booster pump at any hardware or home store.
  5. v1rtu0s1ty

    v1rtu0s1ty DIY Senior Member

    Messages:
    176
    Location:
    Chicago IL
    Oh so you mean, the subpump I showed to you will work? But I need a booster pump. How do they look like? I'm assuming I should put it in between the sprinkler head and subpump.

    And yes, there will be very few debris. Most of them will just be 1mm or 2mm max.

    Thanks again!

    Ron
  6. v1rtu0s1ty

    v1rtu0s1ty DIY Senior Member

    Messages:
    176
    Location:
    Chicago IL
  7. Wet_Boots

    Wet_Boots Sprinkler Guy

    Messages:
    798
    Location:
    Metro NYC
    You can't run sprinkler heads with a sump pump. Not enough pressure.
  8. v1rtu0s1ty

    v1rtu0s1ty DIY Senior Member

    Messages:
    176
    Location:
    Chicago IL
    There will be only 1 sprinkler head that I will be using. It's not really for watering the lawn. What do you think?
  9. jimbo

    jimbo Plumber

    Messages:
    8,997
    Location:
    San Diego
    That pump is listed as max head 33 feet, which is around 14PSI. That is not enough to operate most sprinkler heads, not even one.
  10. v1rtu0s1ty

    v1rtu0s1ty DIY Senior Member

    Messages:
    176
    Location:
    Chicago IL
    Can you please teach me how to calculate the PSI if max head is given? What do I need to add in order to drive at least 1 sprinkler head?

    Thanks!
  11. Rancher

    Rancher Guest

    .433 psi per foot

    Lots of charts out there, just Google for psi water.

    Rancher
  12. speedbump

    speedbump Previous member

    Messages:
    4,540
    Location:
    Riverview, Fl.
    They have a lot of damned nerve calling that pump a one horse pump. My 1/3hp effluent pump pulls 9 amps at 115 volts and only pumps 35 gpm at no head. What a bunch of false advertising.

    Get a 1/2hp jet pump from somebody that sells real pumps and it will do what your trying to do. I have them for $257.04, my prices are very low for quality equipment and you can see it's a lot more money than Harbor Freight wanted for their hyped up sump pump.

    bob...
  13. v1rtu0s1ty

    v1rtu0s1ty DIY Senior Member

    Messages:
    176
    Location:
    Chicago IL
    Just got a reply from the vendor. This is what she said:

    Now, I am a little bit confuse. My faucet outside(from outside wall) can do 5 gallons in 40 seconds or roughly 6 to 7 GPM but I can operate 3 to 4 sprinkler heads. However, the product mentioned says it's capable of 50GPM but cannot operate a single sprinkler head. I'm sorry, I'm new to this realm. What is the relationship of GPM an PSI?

    Thanks!

    Ron
  14. v1rtu0s1ty

    v1rtu0s1ty DIY Senior Member

    Messages:
    176
    Location:
    Chicago IL
    Thanks bob for letting me know. At least, I won't buy it anymore. :)
  15. v1rtu0s1ty

    v1rtu0s1ty DIY Senior Member

    Messages:
    176
    Location:
    Chicago IL
    Can you please send me the link?

    Thanks!

    Ron
  16. speedbump

    speedbump Previous member

    Messages:
    4,540
    Location:
    Riverview, Fl.
    That pump is totally wrong for what you want. Sprinklers require at least 30 psi in order to work. Submersible sump pumps are made to move a lot of water but not make much pressure. It's a trade off. More water less pressure per horsepower and visa versa.

    The jet pumps can be seen here:Jet Pumps

    bob...
  17. v1rtu0s1ty

    v1rtu0s1ty DIY Senior Member

    Messages:
    176
    Location:
    Chicago IL
    Ok, if I use your jet pump, how will I pull the water from the big container? Do I just connect a hose from your jet pump then put it to the container?

    Here is a text diagram

    50g plastic container --->hose--->jetpump--->hose--->sprinklerhead

    Is this correct?
  18. speedbump

    speedbump Previous member

    Messages:
    4,540
    Location:
    Riverview, Fl.
    Yes that will work, except for the hose between the pump and the tank. That should be either PVC or Poly pipe, preferably 1-1/4". I think your 55 gallon drum is a bit small though. The water isn't going to last long using two sprinklers that may be capable of 2.5 gpm.

    bob...
  19. v1rtu0s1ty

    v1rtu0s1ty DIY Senior Member

    Messages:
    176
    Location:
    Chicago IL
    55 gallons is too big for me already. :)

    Is there a smaller version of that jet pump?
  20. speedbump

    speedbump Previous member

    Messages:
    4,540
    Location:
    Riverview, Fl.
    Nope. Sorry.

    bob...
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