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Images 2 Frost protection valve AAV Frost protection valve for heat pumps Variants Downloads Benefits for protecting monobloc or hydrosplit heat pumps against frost damage in the case of malfunctions or power outagehelps to avoid major damage to system componentswith integrated vacuum breakerintegrated mounting valve for easy replacement of the thermostatic elementmaintenance-free Variants Technical data Downloads Variants Part no.Frost protection valve AAV 10281375Frost protection valve AAV 30281376 in-stock items manufactured goods Technical data System connectionAAV 102: G1 maleAAV 302: G1¼ AGFlow coefficient KvsAAV 102: 55 m³/hAAV 302: 70 m³/hNominal pressuremax. 10 barOpening temperature (medium)3 °C (± 1 °C)Closing temperature (medium)4 °C (± 1 °C)Operating temperature rangeMedium: 0/70 °CAmbient: -30/+60 °CMaterialHousing: brass (CW617N)spring: Stainless steelseals: EPDM Downloads FROST_PROTECTION_VALVE_AAV_25-10_EN.PDF Flyers PDF English German (Germany) Frost protection valve AAV 102, 302 Mounting instructions PDF Download