What does AVB stand for?
Atmospheric Vacuum Breaker
AVB is used to prevent backsiphonage.
What does PVB stand for?
Pressure Vacuum Breaker
PVB is designed to stop backsiphonage.
What does DCA stand for?
Double Check Assembly
DCA is used to prevent backpressure.
What does RP stand for?
Reduced Pressure Principle Device
RP is used to handle both backsiphonage and backpressure.
Which devices can stop backsiphonage?
- PVB
- DCA
- RP
- AVB
These devices are effective in preventing backsiphonage.
Which devices can stop backpressure?
- DCA
- RP
These devices are specifically designed to handle backpressure.
Which devices can handle constant pressure?
- RP
- DCA
- PVB
These devices are suitable for applications with constant pressure.
The approved backflow devices for non-health hazards include:
- AVB
- PVB
- DCA
- RP
All these devices are approved for non-health hazard applications.
Which device is approved when there is chemical applied by aspiration, injection, or emission?
RP
RP is the only approved device in such scenarios.
If there is an on-site sewage facility, which backflow device is approved?
RP
RP is required when an on-site sewage facility is present.
If major maintenance has to be performed, which backflow device must be properly installed prior to the repair work?
An approved backflow device
Proper installation is crucial before maintenance.
If including a master valve, where must it be installed?
Downstream from the PVB, DCA, or RP
This ensures proper operation of the system.
Which devices have to be tested upon installation and annually?
Devices used in applications designated as health hazards
Regular testing is essential for health hazard applications.
Which backflow devices have to be tested upon installation?
All backflow devices
Testing is mandatory for all backflow devices upon installation.
If a DCA is installed below ground, what device is required?
A Y-Strainer installed on inlet side of the DCA
This is necessary to prevent debris from entering the system.
If there is an additional water source supplying water to a system being supplied by a potable water supply, what device has to be used?
A backflow prevention device
This is crucial to protect the potable water supply.
