Flow/ pressure gauge

Discussion in 'Irrigation' started by avernon0112, Aug 5, 2012.

  1. avernon0112

    avernon0112 LawnSite Member
    Posts: 126

    I am starting to get into the install side of the business. I have 3 jobs in the works now. Some additions and some new installs altogether. My questions is what do you use to get flow and pressure readings for 1.5 to 3 inch lines? All my searches only show 13 GPM max guages and that is nowhere close to what need. I have asked in the supply houses and no one can seem to give me a answer....
     
  2. Wet_Boots

    Wet_Boots LawnSite Fanatic
    Posts: 47,355

    Just how would you go about using a flow gauge that can read 400 gpm? It isn't like there are convenient places to connect a flow gauge in the larger-diameter plumbing.
     
  3. avernon0112

    avernon0112 LawnSite Member
    Posts: 126

    Well then how do you know how to design on a larger system other than using the safe flow on the meter and backflow?
     
  4. Wet_Boots

    Wet_Boots LawnSite Fanatic
    Posts: 47,355

    Just how many acres are you going to be watering? It would surprise me that anything really big isn't already designed and specified.
     
  5. avernon0112

    avernon0112 LawnSite Member
    Posts: 126

    Why is it hard to believe that it has not already been designed? These are not new buildings. One is a roadway that was totally destroyed by a widening project. Another is a existing building that is wanting to add irrigation.
    I mainly would use 1.5 to 2 inch. Not sure of the acreage off hand looking at 25 to 30 zones at first guess depending on the amount of drip needed for the landscape install.
     
  6. 1idejim

    1idejim LawnSite Fanatic
    Posts: 9,322

    non contact ultrasonic flow meters are available. They are spendy yet affordable.

    Drawback is they are size specific.

    5 fps is what you design around anyhow.
    Posted via Mobile Device
     
  7. cgaengineer

    cgaengineer LawnSite Fanatic
    Posts: 15,782

    Take a look at a Pollard diffuser with piezo tube and flow gauge.
    Posted via Mobile Device
     
  8. txirrigation

    txirrigation LawnSite Senior Member
    from Texas
    Posts: 977

    what size is the water meter? That seems to be missing from your calculations.
     
  9. avernon0112

    avernon0112 LawnSite Member
    Posts: 126

    I understand that but would just like to make sure that I know what my pressure is rather than put everything in on a guess. That could make for a bad day.
     
  10. avernon0112

    avernon0112 LawnSite Member
    Posts: 126

    On one of the existing systems it has 2, 1.5 inch meters, another has a 2.5 inch meter. All the others will be new stuff.
     

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