How to install the backflow preventers

1. The device must be located in a common, easily accessible area of the building, it must be ventilated and not subject to flooding. (The preventer should preferably be placed outside building works and above the soil).

2. The backflow preventer must be located away from every area that may be flooded, always considering the highest level that water may reach in adjacent areas, in case of frequent flooding.

3. Around the device, there must be enough room to enable easy installation or removal. It must be easily accessible for repair work and working tests.

4. When the device is placed in an installation which may pollute the drinking water supply network, all networks supplying sanitary or food processing systems must be installed upstream with respect to the backflow preventer and the downstream network must be marked with the conventional safety signs and colours, in accordance with current regulations.

5. The opening of the relief valve must enable the water to drain off as a result of gravity.

6. When running a test with the ECO3TEST device, pressure gauges must be at the same height as the backflow, to ensure correct measurement by the differential pressure gauge.

7. The discharge device must not give off toxic fumes into the room. The discharged waters must not be harmful to the environment: the health authorities should be consulted in the cases established by the current regulations.

8. The leakage recovery system, located under the bleed valve mouth, and the discharge water recovery works must have a minimum section