What Does Backflow Device Mean?
A backflow device is a preventive device that is installed in pipelines carrying potable water to protect the water from harmful chemicals and contaminants. A clogged sewer pipe or an industrial effluent pipe can flow back into the main system and thus contaminate other supply sources. This can happen either as a result of back-pressure or back-siphoning. The backflow device, also known as a reduced pressure zone (RPZ) valve, is installed at cross-connecting pipelines, such as where an industrial water supply meets the public water supply.
Backflow device installation and maintenance is a component of trenchless installation and repair.
