Safety valves

Safety valves

Safety valves protect sanitary and heating systems. They regulate pressure and allow over-compressed fluid to be discharged from the system when the pressure reaches its preset limit value, keeping the entire circuit in good working order and avoiding any incident.

Benefits of safety valves

  • Single setting range at 3 or 7 bar, sealed using a capsule
  • 5 year guarantee
  • NF P 52001 certification for the 3 bar series
  • Made in Europe

Features and applications of safety valves

The 3 bar models are designed to protect heating systems, and 7 bar models protect sanitary systems.

Applications Sanitary Heating
1/2" 3/4" 1/2" 3/4"
Pressure, factory setting
Power
Calorific power
Class
3 bar
3.6 bar
100 kW
2
3 bar
3.6 bar
139 kW
2
7 bar
8.4 bar
230 kW
-
7 bar
8.4 bar
275 kW
-

 

Models 866 & 867 with built-in pressure gauge
Connection: Female/female, Male/female
  • 1/2", 3/4"
  • Nominal pressure 3 bar
Models 868 & 869
Connection: Female/female, Male/female
  • 1/2", 3/4"
  • Nominal pressure 3 bar and 7 bar

 

Installing the unit

Fitting recommendations

  • The relief valve must be fitted vertically, as close as possible to the heat generator.
  • It must be accessible and visible.
  • No valve must be placed between the heat generator and the relief valve.
  • Follow the direction of the arrows → the outlet is connected to the drain pipe.
  • The inlet and drain pipes must not have a smaller diameter than the nominal diameter of the relief valve.
  • It should discharge into the open air without circuit accident.

Commissioning

Make the valve 'splutter' when commissioning.
To do so:

  • Turn the red knob anticlockwise.
  • When the knob lifts, the valve is opened. When the knob drops, the valve is closed.

Maintenance

  • The relief valve should be operated at least once a year. To do so, use the same method as for commissioning, repeating the operation several times.