Aqua Lung tanks meet the EN 250 standard as well as the new PED regulations that require manufacturers to certify a “tank regulator set. Tanks sold in France are required to meet this regulation.
Aqualung-cylinder valves are made from high quality brass. It is protected by a chromium coating against corrosion. Then she called a combination valve are constructed, they can with a screw insert as an INT or DIN 5/8 valve and thus Regulators INT can be connected.