

This individual filter allows to avoid "pollution" of a diving block when inflating if there is a doubt about the quality of air (due to a bad maintenance) delivered by the compressor. Also ideal for protecting your "Oxy-clean" blocks.
Please note, this overfilter is not suitable for inflation with pure oxygen.
For use on Nitrox blocks, the use of a non-return valve is strongly recommended.
The non-return valve prevents explosions in case of mishandling during the inflation procedure. If the pressure in the O2-filled diving block is higher than the pressure upstream of the overfilter, the valve will prevent oxygen from flowing back into the cartridge and will avoid auto-ignition of the activated carbon due to temperature rise (adiabatic compression).