With our experience of testing thousand of backflows we have gathered stats on the most commonly used backflows to which ones are most likely to need repairs. Backflows fail for a number of reasons. The main reason for failure is because of mechanical failure.

The largest mechanical failure is because the Poppet valve fails. 

• The Poppet valve is a one way valve mechanism that prevents contaminated water from entering your local drinking water supply.
• It is in most cases, these poppet valves are made of plastic and open and shut thousands of times in their lifespan.
• Thus the need to annually inspect and test backflow valves.