Digital Drip Designer

Lateral Pressure Losses


Lateral length, ft:
Inside dia, in:
Emitter discharge, gph: *
Emitter spacing, ft: *
Elevation change along lateral,ft:
Friction factor: - see table
Average lateral pressure, psi: *
Emitter discharge exponent: * - as calculated or from table
# of emitters per plant: *
Manufacturer's emitter CV,decimal: - from manufacturer or table
Desired subunit emission uniformity, %: see recommended values
Lateral flow, gpm:
Lateral friction losses, psi:
Pressure at end of lateral, psi:
Pressure at lateral inlet, psi:
Allowable pressure change in subunit,psi: for this emission uniformity
Allowable minimum subunit pressure, psi: for this emission uniformity
Allowable maximum subunit pressure, psi: for this emission uniformity
Allowable manifold losses,psi:

Adjust to ensure calculations are within allowable values by:

  • Reducing lateral length
  • Reducing lateral flow
  • Increasing lateral tubing diameter
  • Changing desired emission uniformity

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