| Atmospheric Vacuum Breaker Device (AVB) |
| Sizes | DN6 to DN80 | |
| Hazard Rating | Low | |
| Must be registered | No | |
| Standard | AS2845.1 | |
| Testable | No | |
| Back-siphonage only | Yes |
| Testing & Maintenance requirements | No testing required Check regulatory Authority requirement |
| Pressure & Temperature |  Working
Pressure: 1400kPa Test Pressure:
2000kPa Maximum Working
Temperature: 80ºC |
| Specific Installation Requirements |
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To be located at least DN150 above the highest downstream outlet |
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No isolating valves to be fitted downstream of device |
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Under normal circumstances, not to remain under continuous pressure for more that 12 hours |
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To be vented to atmosphere at all times |
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Not to be subject to flooding |
 
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