Supply ceiling valves are usually located in habitable rooms, such as bedrooms and living rooms. Extract ceiling valves are located in wetrooms, such as kitchens, bathrooms and utility rooms.
Both supply and extract ceiling valves are required for Heat Recovery Ventilation (MVHR) systems, while Mechanical Extract Ventilation (MEV) systems only require extract valves.
A series of ducting connects the ceiling valves to the ventilation units. We have valves available in various sizes ranging from 100mm-200mm to fit the required ducting.