The antifreeze valve allows the circuit medium to be drained when the temperature reaches an average of 3˚C.

This prevents ice forming in the circuit of a system, generally with a heat pump, avoiding potential damage to equipment, valves and pipework.

The valves are suitable for a variety of fittings and pipes connected by a union.

The antifreeze valve allows the circuit medium to be drained when its temperature reaches an average value of 3 °C. This prevents ice forming in the circuit of a system, generally with a heat pump, avoiding potential damage to the machine and to the pipes.

The version with the air sensor allows the system to work in cooling mode, even when the water temperature is approaching 3 °C. In these conditions the air sensor cuts in to prevent water drainage.

● Max. working pressure: 10 bar
● Temperature range: 0–90 °C
● Ambient temperature range: -30–60 °C
● Opening temperature: 3 °C
● Closing temperature: 4 °C

The pack consists of:

2 x iStop® Anti-freeze Valves

The antifreeze valve allows the circuit medium to be drained when its temperature reaches an average value of 3 °C. This prevents ice from forming in the circuit of a system, generally with a heat pump, avoiding potential damage to the machine and to the pipes.

1 x High Flow Bi Pass

The differential by-pass valve is used in systems working with variable flow rates, for example in those making widespread use of thermostatic valves or 2-way motorised valves. It ensures a flow recirculation proportional to the number of valves being closed while limiting the maximum differential pressure value generated by the pump.

1 x 28mm Dirtmag Plus

Dirtmag Quattro Multifunction device with dirt separator and strainer, including compression, ends. The presence of these two components allows for continuous protection of the generator and devices from any impurities that form in the hydraulic circuit both at the time of system start-up and in normal operating conditions.