stop r frost protection valve with outdoor air sensor series 108 Usedom zinc anodes or alpine versions)

zinc anodes or alpine versions) are required

Locking sleeve 1"1/2M

Depth 1189 mm

Pump angle

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stop r frost protection valve with outdoor air sensor series 108 Usedom zinc anodes or alpine versions)Caleffi frost protection valve for heat pumps 1" and 1 1 4'' with outside air duct The frost protection valve prevents the medium in the system circuit from freezing and thus prevents damage to the heat pump and pipes. The valve is a mechanically operating protective system. The version with an outdoor air sensor allows the system to operate in cooling mode even when the water temperature approaches 3C. TECHNICAL DATA Frost protection valve Caleffi