TÜV/CE safety valves for heating and cooling
Series 651mHIK

Rueckruf EN

Request a call back

Protecting your personal data is important to us. Please read our privacy policy.


Safety valves with diaphragm made of gunmetal, all-metal construction angle type with threaded connections

651mHIK with inlet and outlet diameter equal
Robust safety valve with diaphragm with an all-metal construction. Designed to protect hot-water- and heating-systems.
This unmatched design, which does not have any plastic parts, means that these valves are also suitable for very high external temperatures.

  • Examples of use
  • Approvals
  • Downloads

For the protection of:

  • thermostatically protected closed-circuit water heating systems with flow temperatures of up to 120°C.

Not permitted in Germany.

Should the thermostatic limiting and control unit fail, the safety valve has to blow-off the total heating output of the boiler as hot water and steam.
As these valves are completely made of metal they can also be installed at high environmental or radiation temperatures.

  • heating systems for building technology- and industrial-applications
  • co-generation plants (CHP)

Safety valves are set and sealed at the factory.


EC type examination

TSG ZF001-2006

TR ZU 032/2013 - TR ZU 010/2011

PED 2014/68/EU

Suitable for
1/2" - 1 1/2"
- 10°C to + 120°C
2,5 bar, 3,0 bar
and 3,5 bar
Data sheet/Capacity table