Take Control Of The Air In Irrigation Systems

AIR VENTS ARE USED TO CONTROL THE AIR IN IRRIGATION SYSTEMS FOR PROPER WATERING AND ACCURATE MEASUREMENT FOR FLOW AND WATER METERS

Controlling the air in irrigation systems controls the water flow and the most efficient way to control air is by the proper use of air vents. Both the presence of air and absence of air can cause problems and damage to irrigation systems. Netafim provides air vents to discharge and admit air as required.

Trapped air in pipes impedes water flow and can lower watering uniformity. It can also cause water hammer and damage to pipes and fittings. The air in pipes also produces inaccurate readings for water and flow meters. For reliable and accurate water measurement, flow meters require pipes to be full of water.

The absence of air in pipes can trigger contaminates such as mud and dirt to be drawn into the piping system.

Two Types of Air Vents Available

AIR/VACUUM RELIEF AIR VENTS

  • Install in subsurface systems
  • Not required for on-surface systems or when installing Techline HCVXR and CV dripline
  • Discharges large volumes of air before a pipe is pressurized and admits large quantities of air when the pipe drains
  • Also known as large orifice air vents, vacuum breakers, low-pressure air vents, or air relief vents

COMBINATION AIR VENTS

  • Install before water meters or metering valves to ensure there is no air in the line for accurate flow readings
  • Performs both functions as an air/vacuum relief vent and automatic air release vent
  • Admits and discharges large volumes of air when needed, and releases small volumes of air continuously when the lines are pressurized
  • Also known as double-acting air vents

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