Visszafolyásokat

Visszafolyásokat, often translated as backflow or reflux in English, refers to the undesirable reversal of water flow in a plumbing system. This phenomenon can occur when the pressure in the potable water supply drops below the pressure in the connected non-potable system. Such a pressure drop can be caused by various factors, including a water main break, a fire hydrant being used, or heavy water usage at a higher elevation.

When backflow occurs, it can draw contaminated water from sources like irrigation systems, boilers, or industrial processes into the clean drinking water supply. This contamination poses a significant public health risk, as it can introduce harmful bacteria, chemicals, and other pollutants into the water that people drink and use for cooking and sanitation.

To prevent backflow, plumbing codes require the installation of backflow prevention devices. These devices are designed to allow water to flow in only one direction, effectively creating a barrier against the reversal of flow. Common types of backflow preventers include vacuum breakers, pressure vacuum breakers, and reduced pressure zone assemblies. Regular testing and maintenance of these devices are crucial to ensure their continued effectiveness. Local water authorities often have specific regulations regarding backflow prevention and may require periodic inspections and testing of installed devices by certified professionals. Understanding and addressing backflow is a vital aspect of maintaining safe and reliable water distribution systems.