Backflow valves must be inspected annually to ensure proper operation and to keep your property in compliance with the local code. Your fresh water supply is subject to interruption and your business may be fined if backflow testing isn’t completed in time.
A backflow prevention device most commonly consists of a pair of mechanical check values that prevent dirty water from flowing back into the clean water supply in the result of an unexpected or radical change in water pressure. If professionally installed and maintained, a backflow preventer will keep drinking water safe and free of contaminants.
Backflow happens when the normal flow of water is reversed from its intended direction in any pipeline or plumbing system. The danger of backflow comes with the potential for cross-contamination: when water that has contacted chemicals or hazardous compounds flows back into the drinking water system. Dirty water can be contaminated with feces, pesticides, chemicals and other hazardous materials, and causes a severe health hazard. Backflow can occur at cross-connections between potable and non-potable water in any residential, commercial, or manufacturing system.