For the protection of:
- closed-circuit, intrinsically safe solar heating systems with water or water mixtures as a heat transfer medium, with permissible supply temperatures of up to 120°C.
As these valves are completely made of metal, they can also be installed at high environmental or radiation temperatures. All materials suitable for max. temperatures up to 160°C.
- intrinsically safe, thermal solar plants
For non intrinsically safe plants and temperatures >120°C please use the safety valves 451/851bG series or 452/852bGL series.
Safety valves are set and sealed at the factory.