Highly recommend installing an electric Bravo Turbo Max Pump for inflating / deflating inflatable tank cylinders. Power supply 12V. Will pump a 7 meter boat in 7 minutes.
The recommended pressure in cylinders up to 250 mbar can be set by a regulator on the body. Max. power – 720W. Dimensions:310*180*190mm (12.2 * 7.1 * 7.5 inches.