Pressure Vacuum Breaker Device

Definition


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A pressure vacuum device is a device composed of an independently operating, internally loaded check valve and an independently operating loaded air inlet valve.

This unit also includes tightly closing resilient seated shut-off valves attached at each end of the device and properly located resilient seated test cocks.

Generally used as an isolation device on irrigation systems.

These are designed to protect against non-health hazards (pollutants) or a health hazard (contaminant) under a back-siphonage condition only.

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