101.1 Backflow Prevention Management Glossary of Terms
There are currently 2 names in this directory beginning with the letter B.
Back SiphonageNegative pressure- water is pushed back into the supply system by atmospheric pressure (14.7>sia) (pounds per square inch absolute or zero gauge pressure- at sea level)
Backflow• A reversal of the normal direction of flow
• Back Pressure- Customer side has greater pressure than the supply side