Abstract: A vent valve for a fuel tank includes a valve housing having a first valve mechanism movable between an open and closed position and a second valve mechanism movable between an open and closed position. The first valve mechanism opens to vent the tank at a first design pressure differential between the tank pressure and atmospheric pressure and the second valve mechanism opens to vent the tank at a second design pressure differential that is greater than the first design pressure differential. The first valve mechanism is an electronic valve mechanism and the second valve mechanism is a mechanical valve mechanism. A method of venting a fuel tank includes opening the first valve mechanism to establish fluid communication between the tank and atmosphere at the first design pressure differential and opening the second valve mechanism to establish fluid communication between the tank and atmosphere at the second design pressure differential.