Knowledge Base

How do I know what is a Containment Backflow vs. Isolation Backflow?

A backflow device on the incoming line or service is a containment backflow. The device is after the water meter, but before any branches or connections to the service line coming into the building, facility, home, etc. An isolation assembly protects your drinking water from hazards used downstream of the containment backflow that feeds into a boiler, chemical feed lines, irrigation, etc. This isolation assembly is to protect internal plumbing drinking water from contamination. This is why it is recommended to test annually similar to the containment backflow.
Updated 9/25/2020 9:08 AM
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