What is the purpose of the non-return valve?

What is its purpose?

Its function is to allow water to pass through the pipes in one direction only: from our distribution network to your private system. It must prevent any backflow of wastewater into the system, which could deteriorate the quality of the water supplied and cause inconvenience to all consumers.   

Where is the non-return valve located in your system?  

It is placed just after the bleed valve after the water meter (in the direction of water flow).

 

The non-return valve must be installed, maintained, repaired or replaced by you.

Exceptionally, when installing a new connection, we supply and install the non-return valve.  

Who is responsible for what and when?  

What is the purpose of the backflow preventer and when should it be installed?  

The installation of a backflow preventer is highly recommended for hospitals, homes, nurseries, industries, etc. 

This device is equipped with two non-return valves separated by a discharge chamber. The backflow preventer protects drinking water systems by interrupting the continuity of the supply to the private system by self-draining and draining the liquid if there is a danger of wastewater flowing back into the public supply pipe.  

Don't forget!  

All connections must be fitted with a non-return valve approved by SWDE or any other distributor. It is maintained, repaired or replaced by you at your own expense.  

The list of approved non-return valves is available in the directory of technical requirements for indoor systems on the Belgaqua website.