Pressure reducers and winterization

Discussion in 'Irrigation / Sprinkler Forum' started by anon125, Oct 9, 2020.

  1. anon125

    anon125 Member

    Joined:
    Jul 7, 2009
    Location:
    British Columbia
    The house came with an underground sprinkler system.
    we had it expanded underground.
    But he also installed above ground drip hoses.
    do these need a pressure reducing valve?
    Is it usually in the distribution box?

    what does a pressure reducing valve look like

    Can winterizing, blowing the water out of the system with compressed air damage the reducers or the drip feed hoses.
    Thanks all
     
    Last edited: Oct 9, 2020
  2. WorthFlorida

    WorthFlorida The wife is still training me.

    Joined:
    Oct 28, 2009
    Occupation:
    Retired
    Location:
    Orlando, Florida
    As long as there isn't too much pressure no damage will occur. A typical homeowner compressor is fine, just don't get it over 100 PSI. Depending on the type of drip irrigation and size, and the pressures your are working with determine if a reducing valve is needed. If you are using micro drip tubing they may be needed. Too much pressure will blow off the drip nozzles and press fit connections. If its the large brown color drip pipe with predrilled holes, usually not. Too many variables to consider for a simple yes or no answer.

    https://store.rainbird.com/drip-low-volume/filters-valves-pressure-regulators.html
     
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  4. Sylvan

    Sylvan Still learning

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    plumbing - fire suppression - boiler inspector
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    New York
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  5. Sylvan

    Sylvan Still learning

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    plumbing - fire suppression - boiler inspector
    Location:
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    Air pressures of plastic systems should not be over 6 PSI MAX

    This is why boiler /pressure vessels drainage /vent piping are tested hydrostatically not with air in the majority of cases

    "Air testing" of natural gas lines is normally 3 PSI with a 5 PSI gauge
     
  6. WorthFlorida

    WorthFlorida The wife is still training me.

    Joined:
    Oct 28, 2009
    Occupation:
    Retired
    Location:
    Orlando, Florida
    It's an irrigation system and most can handle up to 150 PSI water pressure. It the glued joints that may fail with too much pressure. Some PVC thin wall stuff for irrigation is only rated at 160 PSI. "A rainbird irrigation valve must be rated @ no less than 150 PSI".
     
  7. anon125

    anon125 Member

    Joined:
    Jul 7, 2009
    Location:
    British Columbia
    The toro drip feed system has little blocks inside the hose and that is where the holes are.
    thanks all
     
  8. anon125

    anon125 Member

    Joined:
    Jul 7, 2009
    Location:
    British Columbia
    there are no glued connections. it is above ground soft plastic dripp hose
    thanks every one
     
  9. anon125

    anon125 Member

    Joined:
    Jul 7, 2009
    Location:
    British Columbia
    As i wrote it is not an underground system.
    I wrote to the hose manufacturer who says maximum 40psi
    thanks everybody
     
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