The positive flow of water can be reversed when there is a sudden reduction in water pressure in the distribution system, such as during firefighting or when a water main breaks. This can create a suction effect, drawing the non-potable substance into the potable water system.
What Types Of Backflow Preventers Can Be Installed To Help Protect Our Home?
Pressure Vacuum Breakers can be installed on the water supply line to any landscape irrigation system or on the water fill line to swimming pools. Hose Bibb Vacuum Breakers are small inexpensive devices that are installed on hose bibbs or threaded sill cocks where garden hoses are attached.