Dripline Support

Welcome to the HDL support section. HDL is Hunter's professional grade inline drip tubing, suitable for at-grade, temporary, shallow subsurface and living wall applications for a variety of plant material. Here you will find installation details and design guides.

  • Dripline - Design Guide
    This guide outlines the application, design, and installation of Hunter’s inline drip products that provide designers, installers, and irrigation managers a new class of irrigation
  • Dripline - Flow Rates
    Emitter Flow Rate = 1.0 GPH   Row Spacing Emitter Spacing   12" 18" 24" 12" 1.6 1.1 0.8 14"
  • Dripline - Calculating Application Rate
    Calculate the application rate of each similar zone by using the following formula:   231 is going to be the conversion number or constant. The GPH depends on the
  • Air Release Valves
    The Air/Vacuum Relief Valve (AVR) is designed to reliably discharge air during system start-up and allow air into the line during shutdown. The valve closes even with low water
  • Flush Valve
    The Automatic Flush Valve (AFV) allows debris to be flushed out of any dripline system. It is good practice to install an AFV at the end of any single dripline or grid of
  • Eco Indicator
    Similar to a sprinkler head, the Eco-Indicator pops up to provide visual indication that a drip system is operating. The Eco-Indicator has a highly visible yellow stem that

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