Install a Backflow Preventer
A backflow preventer is a device installed on a water supply line to prevent contaminated water from flowing back into the potable water supply. Backflow can occur when the pressure in the water supply drops, such as during a power outage or water main break. This can create a vacuum that sucks contaminated water from the sewer or other sources back into the water supply.
Types of Backflow Preventers
There are two main types of backflow preventers: mechanical and non-mechanical.
- Mechanical backflow preventers use a check valve to prevent water from flowing back into the water supply. Check valves are simple devices that allow water to flow in one direction only.
- Non-mechanical backflow preventers use a vacuum breaker to prevent water from flowing back into the water supply. Vacuum breakers are devices that allow air to enter the water supply when the pressure drops, preventing a vacuum from forming.
Choosing the Right Backflow Preventer
The type of backflow preventer that you need will depend on the specific application. Factors to consider include:
- The size of the water supply line
- The pressure of the water supply
- The potential for backflow
Installing a Backflow Preventer
Installing a backflow preventer is a relatively simple process. However, it is important to follow the manufacturer's instructions carefully to ensure that the device is installed correctly.
- Turn off the water supply to the affected area.
- Cut the water supply line and install the backflow preventer according to the manufacturer's instructions.
- Turn the water supply back on and check for leaks.
Maintaining a Backflow Preventer
Backflow preventers require regular maintenance to ensure that they are functioning properly. Maintenance tasks include:
- Inspecting the backflow preventer for leaks
- Testing the backflow preventer to ensure that it is functioning properly
- Cleaning the backflow preventer as needed