TÜV/CE safety valves for solar plants
and district heating Series 651mSK VA

Rueckruf EN

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Safety valves made of stainless steel, angle-type with threaded connections


  • Examples of use
  • Approvals
  • Downloads

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.


TÜV Type test approval 2013

EC type examination

TRD 721
DIN 4757 Part 1
DIN EN 12976
DIN EN ISO 4126-1
PED 2014/68/EU

Suitable for
Solar heating systems
Stainless steel
- 10°C to + 120°C
2,0 - 10 bar
Data sheet/Capacity table