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ICESTOP - Antifreeze valve

The ICESTOP anti-freeze valve by IVAR Group is designed to protect closed-loop heat pump systems from freezing risks. In low-temperature conditions or power failures, water inside pipes can freeze and cause severe damage.

ICESTOP prevents:

  • pipe rupture
  • equipment damage
  • system failure

How ICESTOP works

Fully mechanical operation, ensures protection even during power outages:

  • Automatic opening at 3 °C for water discharge
  • Automatic closure at 4 °C for discharge interruption

Key benefits

  • Automatic freeze protection
  • No power supply required
  • Reduced maintenance and repair costs
  • Compatible with standard and high-temperature heat pumps (water temperature range 0–90°C)
  • High safety for outdoor systems
  • Replaceable components for long-lasting performance

Applications

ICESTOP should be installed in the section most exposed to freezing, typically between indoor and outdoor units.

It is ideal for:

  • Residential heat pump systems
  • Commercial HVAC installations
  • Outdoor exposed piping systems
  • Cold climate installations

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