Back Flow Preventers

A backflow preventer is a device that’s installed on a home’s water pipes to prevent drinking water from becoming contaminated. It acts like a one-way gate that allows water to flow from the public water supply into a home’s pipes, but prevents water from flowing backward into the main water supply.

There are multiple types of backflow prevention devices, and they all work best in specific applications. All backflow preventers, no matter the type, protect clean water lines from wastewater contaminants. The following are three common types of backflow preventers:

• Air Gaps
• Vacuum Breakers
• Check Valves

Backflow preventers should be tested yearly for wear and defects. All businesses are required by law to have backflow prevention devices tested yearly, and homes are subject to testing based on local legislation.