Products Our motto "Technology for Environmental Protection" has long been an inherent part of our product development philosophy and product range. We strive to improve the environment, to make processes which work with greater environmental compatibility and to avoid putting a strain on the environment. We offer you a multitude of innovative solutions, new products and smart concepts. More Informations Industries & Topics Industries & Topics Overview Fuel oil components Fuel oil components Overview Fast and clean oil filter change Avoiding fungal attacks in biofuel More performance with the sintered plastic sieve AFRISO Smart Home AFRISO Smart Home Overview Gateway HG 02 Products Products Overview AFRISOhome App Alexa Smart home applications Smart home applications Overview Leakage security Security Stand-alone applications Stand-alone applications Overview Getting started with AFRIShome Smart Home Craft 4.0 Craft 4.0 Overview OEM-Manifold systems Hydraulic Balancing Hydraulic Balancing Overview VarioQ Vario-DP Tank conversion Hygienic processes AFRISO Smart Home AFRISO Smart Home offers innovative solutions for intelligent home automation. With modern sensors and actuators, you can easily and conveniently control your home. More Informations Service-Center Service-Center Overview Service Contact persons Data exchange formats Catalogs Service-Center Flexible, cost-aware, on schedule, solution-oriented and fast – the AFRISO team always provides the decisive added value. More Informations Training & Events Training & Events Overview Exhibitions Exhibitions Overview SHK+E 2026, Essen IFH Intherm 2026, Nuremberg GET Nord 2026, Hamburg Search Domestic technology Equipment for heating systems, boiler rooms and chimneys Frost protection valve AAV Images 2 Frost protection valve AAV Frostschutzventil für Wärmepumpen Variants Documents 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 Application For applications with monobloc or hydrosplit heat pumps that are connected directly to the heating circuit water outdoors. Description A frost protection valve with integrated vacuum breaker is installed in the flow and return lines of the system. The valve must be installed as close as possible to the outdoor unit of the heat pump so that sensitive components of the heat pump are protected from damage caused by freezing of the heating circuit water. If maintenance is required, the thermostatic cartridge can be replaced, checked and reinstalled without draining the heating circuit water thanks to the integrated mounting valve.If the temperature of the medium in the heating system drops to 3 °C, the thermostatic element inside the valve opens so the medium can flow to the outside. The resulting negative pressure opens the vacuum breaker and supports the draining of components such as the heat exchanger, pipes, pumps or valves. If the temperature of the medium rises above 4 °C, the thermostatic element automatically shuts off the flow of the medium from the system. 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 maleFlow coefficient KvsAAV 102: 55 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 Frostschutzventil AAV PDF English German English German Frostschutzventil AAV 102, 302 PDF Download Related products
AFRISO Smart Home AFRISO Smart Home offers innovative solutions for intelligent home automation. With modern sensors and actuators, you can easily and conveniently control your home. More Informations Service-Center Service-Center Overview Service Contact persons Data exchange formats Catalogs Service-Center Flexible, cost-aware, on schedule, solution-oriented and fast – the AFRISO team always provides the decisive added value. More Informations Training & Events Training & Events Overview Exhibitions Exhibitions Overview SHK+E 2026, Essen IFH Intherm 2026, Nuremberg GET Nord 2026, Hamburg Search
Service-Center Flexible, cost-aware, on schedule, solution-oriented and fast – the AFRISO team always provides the decisive added value. More Informations Training & Events Training & Events Overview Exhibitions Exhibitions Overview SHK+E 2026, Essen IFH Intherm 2026, Nuremberg GET Nord 2026, Hamburg Search
Images 2 Frost protection valve AAV Frostschutzventil für Wärmepumpen Variants Documents 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 Application For applications with monobloc or hydrosplit heat pumps that are connected directly to the heating circuit water outdoors. Description A frost protection valve with integrated vacuum breaker is installed in the flow and return lines of the system. The valve must be installed as close as possible to the outdoor unit of the heat pump so that sensitive components of the heat pump are protected from damage caused by freezing of the heating circuit water. If maintenance is required, the thermostatic cartridge can be replaced, checked and reinstalled without draining the heating circuit water thanks to the integrated mounting valve.If the temperature of the medium in the heating system drops to 3 °C, the thermostatic element inside the valve opens so the medium can flow to the outside. The resulting negative pressure opens the vacuum breaker and supports the draining of components such as the heat exchanger, pipes, pumps or valves. If the temperature of the medium rises above 4 °C, the thermostatic element automatically shuts off the flow of the medium from the system. 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 maleFlow coefficient KvsAAV 102: 55 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 Frostschutzventil AAV PDF English German English German Frostschutzventil AAV 102, 302 PDF Download
