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Guardian Air/Vacuum Relief Air Vent

Guardian Air/Vacuum Relief Air Vent

Guardian Air/Vacuum Relief Air Vent
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Air and vacuum release valve designed to release large quantities of air on pump startup and break the vacuum caused by system draining when pump shuts down. Proven design rrovides more air release capacity than other valves of similar sizes. Ensures maximum protection of irrigation system with proper sizing and placement.

- Commonly used downstream of valves, primarily at manifolds, to
break vacuum caused by system draining.
- On sloping terrain to prevent collapsing of pipes caused by vacuum
when pipe networks drain.

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

Available in 3/4", 1" and 2". Built-in schrader valve on 3/4" and 1" sizes.
Maximum operating pressures: 150 psi
Connection NPT Male Thread
Features Benefits
Large capacity valves dampen water hammer. Prevent pipes and fittings from cracking or bursting.
Made of corrosion-resistant reinforced UV protected nylon No metal parts to rust or corrode, no need for spare parts.
Available with Shrader Valve Ideal for measuring local line pressure.
Hydrodynamic float design Ensures valve closure as water fills the system, remains open when air pressure reaches 12 psi.
Unique patented rolling seal feature Allows gradual opening and closing

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