All lawn sprinkler systems are required to have a backflow prevention device installed at the connection point to prevent the accidental siphoning of contaminated water back into the public drinking water system. Backflow preventers approved for use with lawn sprinkler systems include either a Double Check Valve Assemble (DCVA), a Pressure Vacuum Breaker
Paul Saunders —
Got a quote on-line they were out the next day, did the work great job.
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