Anti-Freeze Valves

The installation of two anti-freeze valves, one on the flow, the other on the return, is recommended. Otherwise the pipe that does not have it may not be emptied and may be damaged by any freezing.

The installation position is outside the building, at the lowest point of the system, in a position close to the heat pump.

To discuss your next project or for advice to find the right solution, call our technical advice team on 01530 519666 or send us an email.

Download Datasheet

anti-freeze valves

Technical specifications

  • Forged body in brass alloy. Yellow brass finish;
  • Maximum static pressure 10 bar (PN 10);
  • Maximum medium temperature: 90 °C
  • Ambient temperature range: -30°C to +50 °C
  • Opening start medium temperature: +3°C
  • Closing start medium temperature: +4°C
  • Accuracy: ±1°C
  • Fluid discharge rate: ........... L/min
  • Kvs: 68,0
  • Inspectable vent;
  • Inspectable cartridge for cleaning and replacing the sensor.


External connections available:

1” Male flat seal
1”1/4 Male flat seal

Expert assistance

Our team have been handpicked for their expert knowledge and customer service skills. Call us today on 01530 519666 to discuss your project or requirements.