A wealth of answers in a unique quick-reference format. One side delivers solutions to backflow problems; the other provides a photo and summary of each type of backflow preventer. This sturdy, laminated tool is ideal for both office and field use.
A wealth of answers in a unique quick-reference format. One side delivers solutions to backflow problems; the other provides a photo and summary of each type of backflow preventer. This sturdy, laminated tool is ideal for both office and field use.
