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Backflow refers to an undesirable reverse flow of a liquid, gas, or suspended solid into the potable water supply and a backflow prevention device is designed to keep this from happening. Points at which a potable water system connects with a non-potable water system are called cross-connections. Such connections occur naturally in appliances such as clothes washers and dishwashers, but they must be carefully designed and installed to prevent backflow. Another common location for a backflow preventer is the connection of a fire sprinkler system to a water main, to prevent pressurized water from flowing from the fire suppression system into the public water supply.
A significant drop of pressure in a water delivery system creates suction, and this backpressure can force an undesirable contaminant to enter potable water piping. Sources of back pressure may be boilers, heat exchanging equipment, power washing equipment, fire sprinklers, or pumps in the water distribution system. In some cases, there may be an almost continuous risk of overcoming the static water pressure in the piping. To reduce the risk of contamination, a backflow preventer can be fitted. A backflow preventer is also important when potentially toxic chemicals are used.
Jim Bollinger And Son has an experienced team of professionals ready to assist with the installation of backflow prevention devices. We can answer your questions and get you the help needed to fix any backflow issues.