Compressed air valve bridge for double immersion devices with cylinder diameters 140mm and 171mm. Distance between cylinder centers 185mm. The connection between the cylinders can be shut off. This valve combination is manufactured in accordance with DIN EN-144. The cylinder neck thread is M25x2mm O-ring sealed. Double scuba diving equipment considerably increases the level of safety, as these scuba cylinders offer the scuba diver two independent diving devices with two autonomous regulators.