The guarantee of clean filtered air is essential in many hospital and clean room environments. The standard technique used to achieve this is to supply treated air into the clean room and maintain a positive differential pressure between this room and adjacent rooms or corridors. R&D Ventilation Systems Ltd. manufacture a range of air pressure stabilisers designed and engineered to facilitate the application of differential air pressure control within hospital operating theatres, aseptic suites, pharmacies, clean room and similar environments.