Booster pumps Q n A

Discussion in 'Irrigation' started by WalkGood, Jun 22, 2011.

  1. Wet_Boots

    Wet_Boots LawnSite Fanatic
    Posts: 46,879

    You probably lose enough pressure upstream of a 5/8 meter to make it unlikely to max it out in a sprinkler system, unless the static pressure is 100 psi or so.
     
  2. jcom

    jcom LawnSite Senior Member
    Posts: 791

    Uhmm.

    If I have a 2" supply that is dropped to a 1" lateral with 4 Hunter PGP with #3 nozzles for example. At 25 PSI. And I add a booster at the joint where the 2" drops to 1". What do you Mensa boys think is going to happen to the GPM going through the 1" lateral? Stay the same? The nozzles are going to allow more gpm. Check the charts. Hence more GPM with a pump!!!

    You are so arrogant that you cannot admit when your statements are full of crap.

    John
     
  3. Kiril

    Kiril LawnSite Fanatic
    Posts: 18,298

    jcom ..... you are just as guilty here of making incorrect blanket statements as the others are. So before you start correcting others, you might want to start with correcting yourself.
     
  4. jcom

    jcom LawnSite Senior Member
    Posts: 791

    OK Kiril-aka as ML's boy,

    I will always fess up. Where have I made a blanket statement that I cannot back up with fact??

    If I have, I will be the first to learn and admit it.


    I have made blanket statements that I can back up with facts. All of them. I will not make any blanket statements such as "Never" "will never" , "cannot"..

    Others cannot.
     
    Last edited: Jun 26, 2011
  5. Kiril

    Kiril LawnSite Fanatic
    Posts: 18,298

    Really? You have stated here time and time again "flow" will always increase with increasing pressure .... an incorrect blanket statement. If you don't think it is, then show it mathematically how it will always be true.

    I suggest you start with Bernoulli then move onto Hagen–Poiseuille and Darcy–Weisbach
     
    Last edited: Jun 26, 2011
  6. I believe jcom is fighting the blanket statement not the reverse. I reread all his posts and can't see where he made a blanket statement.
    Posted via Mobile Device
     
  7. jcom

    jcom LawnSite Senior Member
    Posts: 791

    If I have stated that an increase in PSI will ALWAYS equate to an increase in GPM, I would need a refresher. That would be a blanket statement that I would take issue with.

    It all depends on the "resistance". Nozzles, drip, spigots. If " resistance" remains the same, an increase of PSI (Voltage for electrical) will result in higher GPM. Or watts. for the electrical folks.

    Yuan
     
  8. Kiril

    Kiril LawnSite Fanatic
    Posts: 18,298


    And you still haven't differentiated between flow rate, flow velocity, and flow volume.

    Resistance doesn't stay the same. Once again .... demonstrate mathematically how your statements will always hold true .... that an increase in pressure will always lead to an increase in "flow".
     
  9. What are you refusing to read k?
     
  10. Kiril

    Kiril LawnSite Fanatic
    Posts: 18,298

    What are you refusing to read P?
     

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