Patent ID: 8684033

Claim:
A method of operating a valve, the valve comprising: a body and drive means, the body comprising first and second ducts that open out into a third duct, wherein the first duct comprises a first shutter and wherein the second duct comprises a second shutter, and the drive means comprising a first transmission wheel and a second transmission wheel respectively associated with the first shutter and the second shutter, wherein the first and second transmission wheels are connected to an outlet shaft of an actuator motor that is movable between the closed and open positions for the ducts, said outlet shaft being provided with a single pinion in order to move the shutters, the method comprising: moving the second shutter in a closed position of the second shutter and simultaneously moving the first shutter in an position adjustable between an open position of the first shutter and a first closed position; moving the second shutter in the closed position of the second shutter and simultaneously moving the first shutter in the first closed position; and moving the second shutter in an open position and simultaneously moving the first shutter in a second closed position.