Antifreeze valves, specifically designed to be used on heat pumps systems, are safety devices, with the aim to prevent ice forming of the fluid in the system circuit.

These valves are particularly suitable to be used on monoblock heat pumps, meaning the ones equipped with an external unit directly connected to the hydronic circuit, through a supply and return pipe.

The functioning of the valve takes place through the action of a sensitive element which detect the temperature of the fluid. In the event the temperature goes lower a pre-set temperature level (3°C), the valve automatically open, avoiding ice formation.

The functioning of the valve takes place with the mechanical movement of the obturator led by the sensitive element, avoiding the need of electrical devices and making the valve functioning even during power outage.

Thanks to the thread on both sides, the valve is equipped with a male and female thread in the same item.

Body in forged brass
Finishing: yellow brass
Max working pressure: 10 bar
Working temperature range: 0–75°C
Enviroment temperature range: -30–60°C
Fluid temperature opening: 3°C
Fluid temperature closing: 4°C
External temperature antifreeze activation: <5°C
Temperature measuring accuracy : +/-1°C