Backwater valve

The City is required to maintain a program for the registration of testable backflow devices. Registration happens automatically when the device is commissioned by a licenced plumber and is updated every year after the device is tested.

Installing a backflow prevention device stops polluted water entering the drinking water supply. A testable or non-testable device can be installed, depending on the risk of contamination.

Backflow prevention devices protect our drinking water supply from contamination by stopping potentially polluted water flowing back into the system.

Backflow registration fees are charged annually, via an invoice, and are automatically renewed upon receipt of payment. For further information on fees, see our Register of fees and charges.

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Helps to reduce the risk of backflow in your process lines that could cause damage to your products and equipment.

Only a Queensland licensed plumber with a backflow endorsement can test the device. As the owner of a property, you are responsible for having the backflow device tested annually.

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If the test fails, the plumber must repair or replace the device immediately. It is a criminal offence to tamper with, or remove, a backflow prevention device without approval.

Plumbers submitting a report must use State Government Form 9 - Report on inspection and testing of backflow prevention devices, registered air gaps and registered break tank.

R-22 Replacements Pressure-Temperature Guide. Key: Green (in of Hg) = Vacuum. Black (psig) = Saturated Vapor (calculate Superheat).