The pollution of domestic drinking water source by backflow sewage has always been the concern of many urban water supply departments. In order to avoid this phenomenon, many water supply departments have begun to try to use various methods. After the installation of backflow preventer in super pipeline, it provides a strong guarantee for preventing pollution of clean water source. Then, which pipe sections are suitable for installation of reverse flow preventers?

At present, there is only one water supply pipe network built in a large part of modern cities, and this water supply pipe network not only supplies domestic water for urban residents, but also supplies non domestic water.

The municipal fire fighting water and greening water of super pipeline need to be connected from the domestic drinking water pipe. However, since the municipal fire fighting and greening water is very easy to be polluted after contacting the external environment during the actual use, it is necessary to install a backflow preventer to prevent the non domestic water from flowing back into the domestic water pipe, This is also the main reason why the super pipeline backflow preventer is widely used in municipal fire water and green water pipelines.

Most industrial enterprises may produce industrial wastewater containing various components in the process of actual production and production. If these industrial wastewater flows into the water supply pipe section of industrial enterprises, the original clean water source will be polluted. The installation and use of the backflow preventer can effectively block the industrial wastewater from the normal water source, so it is also suitable to install the backflow preventer in the industrial water supply pipe section.