The two-way cooling thermostatic valve is designed to protect the heat source from overheating in central heating systems. The brass-bodied valve is equipped with two thermostatic elements.
When the limit temperature is reached, the drain valve opens, allowing overheated water to be discharged from the heat source into the drainage system. At the same time, the valve supplying water from the mains opens.
When the temperature drops below the limit temperature, both valves close at the same time.
The two-way thermostatic valve does not replace a safety valve.
It is designed for boilers with a maximum output of 500 kW, with final cooling up to 100 kW (in accordance with EN 303-5:2012).
It must not be installed with the valve head facing downward.
Technical specifications:
Opening temperature (limit): 97 °C ± 2 °C
Maximum temperature: 110 °C
Maximum pressure on the boiler side: 4 bar
Maximum pressure on the water side: 6 bar
Kvs at 110 °C – both elements open: 2.0 m³/h
Kvs at 110 °C – one element open: 1.3 m³/h
Maximum boiler output – both elements open: 220 kW
Maximum boiler output – one element open: 140 kW
