UniGray™ CNL & HCNL

Integral pressure-compensated drip line, ideal for greenhouses, and permanent applications (10 or more seasons) that require intensive irrigation scheduling. Colored light gray for minimal solar radiation absorption.

UniGray™ CNL & HCNL integral pressure-compensated, drip line with Anti-Drain mechanism, for intensive irrigation applications, colored light grey to maximize radiation reflection, making it ideal for greenhouse, soliess cultres irrigation, nurseries, and pot irrigation.

Expected Product Lifespan

  • 10 years and more


  • Hilly Topography
  • Flat Topography

Dripper Type

  • Integral

Pressure Compensation

  • PC

Dripperline Wall-Thickness

  • Heavy wall

Dripper special features

  • Anti Drain (CNL)
  • Anti-Siphon (AS)


  • On surface

Crop type

  • Protected crops

Why UniGray™ CNL & HCNL?

  • Efficient pulse irrigation: When pressure drops at the end of an irrigation cycle, the CNL/HCNL mechanism closes the dripper keeping pipes full of water ensuring uniform irrigation during short cycles.
  • Solar-energy deflecting pipes: Light-colored dripperlines are designed to prevent absorption of sunlight, in order to optimize available radiation for photosynthesis.
  • Anti-clogging: Anti-Siphon mechanism blocks suction of dirt and other contaminants into the dripline during system draining - eliminating the risk of clogging, or partial clogging.
  • Uniform flow rates: Industry’s biggest filtration area and water passage assures 100% uniformity of water and nutrient distribution even in long laterals and complex topography.
  • Optimal performance: Self-flushing system continuously flushes out debris to ensure optimal dripper performance year after year.
  • Root protection: A physical barrier stops root intrusion without reliance on chemicals.
  • Long-lasting: Ultra-durable, UV-stable lines are built to resist damage from heavy machinery, soil insects, sun exposure and re-coiling.


  • Variety of flow rates: 5 different flow rates (0.7, 1.0, 1.6, 2.3, 3.5 L/H) can address any condition or application
  • CNL range: 1.0 – 4.0 bars / HCNL range: 1.5 – 4.0 bars
  • Wide range of pipe diameters: 16.0 - 23.0 mm
  • Wall thickness: 0.9mm, 1.0mm, 1.2mm
  • Superb UV resistance and unique internal black layer that prevent micro-organizem and algae development



Other Uniram™ models

Uniram™ CNL

Uniram™ CNL

Greenhouses, deciduous plantations and tree irrigation; permanent (10 or more seasons) with Anti Drain mechanism.

Uniram™ HCNL

Uniram™ HCNL

Greenhouses and precise irrigation applications; permanent (10 or more seasons) subsurface row crops; deciduous plantations and tree irrigation with Anti Drain mechanism in complex topographies.

Growers stories

Meet the people pioneering precision irrigation

Dan Luepkes turned his worst ground into his best.

“We can outproduce the best ground in this area with some of the poorest soils.” 

Dan Luepkes

Corn, USA

Matteo Todeschini, Potatoes grower from Italy

“I grew potatoes with traditional methods for 20 years. Now, with drip irrigation, I'm bringing out the best that farming has to offer”

Matteo Todeschini

Potatoes, Italy

Gary Teixeria beat California’s water problems to grow better blueberries.

“You can sleep a little easier knowing you have a low-pressure system out there.”

Gary Teixeria

Blueberries, USA

Need help finding the best solution for your farm?

Need help finding the best solution for your farm?

Get in touch, and we’ll be happy to talk about what your crop needs.