Safety valves with diaphragm made of gunmetal, all-metal construction angle type with threaded connections
651mHNK with enlarged outlet (TÜV/CE )
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
For the protection of:
- thermostatically protected closed-circuit water heating systems with flow temperatures of up to 120°C and a permissible heating output of up to 2.700 kW according to TRD 721, DIN 4751 and DIN EN 12828.
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. Thanks to the all-metal design these safety valves can also be installed in cases of 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.
TÜV Type test approval 516
EC type examination
TR ZU 032/2013 - TR ZU 010/2011
DIN 4751 Part 2
DIN EN 12828
DIN EN ISO 4126-1
|1/2" - 2"|
|- 10°C to + 120°C|
|2,5 bar and 3,0 bar|