The RA-C valve is a normally open valve. In an application with self-acting sensors type FEK or FED it is ensured that the cooling valve opens when the room temperature is rising above the set temperature.
The RA-C valve has 4 presettings, thus the correct quantity of water is ensured for each cooling circuit and it is PN 16 approved. The valve has two external threads thus fittings for various pipe types may be mounted.