Red or yellow surface buoy with self-closing valve, as an emergency or decompression buoy. The buoy can be filled with air underwater. The self-closing valve prevents the air from escaping at the surface. The pressure relief valve prevents the buoy from bursting and is used for deflation.
Buoyancy: approx. 9.1 kg. Also available as a deco buoy / lifting bag with 25 kg buoyancy.