Netafim Drip/Micro Irrigation Solutions

Specifications

• Maximum operating pressure:
• 2” Nylon Combination: 230 psi
• 2” Polypropylene Combination: 150 psi
• 1” Combination: 150 psi
• 3/4” and 1” Automatic: 230 psi
• 3/4” Guardian: 150 psi
• 1” Guardian: 150 psi
• 2” and 3” Guardian: 150 psi

Stages of Operation

Combination Air/Vacuum Relief and Continuous Acting Air Vents

1. During start-up, the vent releases large volumes of air.
2. As the system builds pressure, the body fills with water, forcing the float upwards and closing the vent.
3. While the system is pressurized, the “automatic” function continuously expels accumulated air.
4. At shutdown, the vent’s large opening allows air back into the system preventing the pipe and accessories from collapsing, and preventing suction of mud and debris.

Automatic Continuous Acting Air Vent

1. While the system is pressurized, air accumulates in the body, systematically dropping the rolling seal mechanism releasing the trapped air.
2. After air is expelled, water again enters the body and forces the float to close the vent.

Guardian Air and Vacuum Relief Air Vents

1. Releases large quantities of air through an opening equal to a large size standard vent. As water enters, the float rises and forces the vent to close.
2. During normal flow, while the line is under pressure, the vent remains closed.
3. As the line empties, or during a drop in pressure, the float drops down and opens the vent. Air is admitted, breaking the vacuum created by the withdrawing water and prevents the collapse of pipelines and suction of soil into dripperlines.

Combination Air/Vacuum Relief and Continuous Acting Air Vents

Automatic Continuous Acting Air Vents

Guardian Air and Vacuum Relief Acting Air Vents