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 - |
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Models 866 & 867 with built-in pressure gauge Connection: Female/female, Male/female
|
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Models 868 & 869 Connection: Female/female, Male/female
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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.