Backflow preventer

Backflow preventer, also known as anti-fouling blocker, English name Backflow Preventer, usually installed on the drinking water into the household pipe to prevent backwater pollution upstream in the event of local pressure anomalies
Water network, is a water supply safety equipment or anti-pollution health and safety products - ANTIPOLLUTION - Protection of drinking water networks.
    It consists of two spaced check valves and a central chamber and hydraulically actuated drain valve. Due to the local head loss of the check valve, the water pressure in the intermediate chamber is always lower than the inlet water pressure, and the pressure is abnormal.
At the same time, even if the two check valves can not be reversely sealed, the safety drain valve will automatically open to vent the backflow water and maintain the air partition to ensure the water supply is safe and safe.

advantage

(1) Double check valve and air partition to effectively eliminate the possible danger of backflow pollution
(2) High performance, easy to install, easy to repair
(3) Designed according to the European Pr. En.164108 standard
(4) UNI9157 certification number D024&D028
(5) Italy imported BRANDONI imported

Internal structure