Most people who own or manage backflow prevention devices in Palm Beach County only know that they receive an annual notice from their local municipality telling them that their backflow prevention device must be tested again. Every owner should be informed on what a backflow actually is and what a backflow prevention device does.
Backflow prevention devices protect your water supply from contamination or pollution. In water supply systems, water is normally maintained at a significant pressure to enable water to flow from the tap, shower, etc. A backflow occurs when pressure suddenly decreases in a supply line that ordinarily maintains high pressure. In a normal water supply system high pressure in a water main or other supply line forces the water forward, allowing you to have strong water pressure to faucets, shower heads, etc. When the pressure suddenly decreases, dirty water can flow into the supply line. Things like water main breaks, frozen pipes, and other problems can lead to a loss of water pressure and therefore, backflow.
Backflow prevention devices must be tested annually to ensure they are working up to standards.
Rates for Testing
Cleary Plumbing can’t guarantee we have the cheapest rates like many local companies, but what we do guarantee is that your backflow will be professionally tested by a certified backflow tester and that you will be confident when we leave that the backflow will be working properly, protecting your water supply.
Our equipment are all updated and calibrated.
Most palm beach county communities water utility departments require that you test your backflow prevention device assembly at the following times:
When your backflow prevention assembly is first installed and annually thereafter.
After any repair or replacement of the backflow prevention assembly.
At Cleary Plumbing we install, test, certify and submit paperwork required by Palm Beach County communities for backflow preventers.
Types of Backflow Prevention Devices
Atmospheric Vacuum Breaker (AVB)
Double Check (DC)
Reduced Pressure Zone (RPZ)
The atmospheric vacuum breaker is a non-testable unit and is good for back siphonage only for non-health hazard or health hazard conditions. They must be installed downstream from any shut off valves and cannot be used under any pressure. These are common on your outside hose connections.
Used in non-health hazard conditions only, the double check valves are designed to protect against backflow pressure and back siphonage. They are a device with two check valves inline designed to prevent backflow. The DCV needs to be tested and certified yearly to ensure it is working properly. Paperwork must be filled out for the certifying of the valve. A copy must remain with the valve at all times and a copy submitted to the local palm beach county community water department.
To protect the public drinking water system, palm beach county community utility department requires a reduced pressure principal assembly (RP) on all non-residential services with 1 ½” potable water meters or larger. Class 1-4 fire line system required, at a minimum, a double check detector assembly (DCDA) and class 5 and 6 require a reduced pressure principle detector assembly (RPDA).
The reduced pressure zone (RPZ) is the best mechanical means of preventing backflow pressure and back siphonage. Made for non-healthy hazard or high-hazard conditions, they are designed to protect against back siphonage or back pressure. These assemblies are the most expensive backflow prevention devises, but are the best way to protect against cross connections while in operational conditions. The RPZ assemblies may spit out water of relief port for a variety of reasons, so there must be a floor drain if being installed inside a building. The RPZ needs to be tested and certified every year to ensure it is working properly.
Call us today for backflow prevention device testing!