Dual Flap Pressure Relief Valve

A pressure vent valve for ventilation of the interior of a motor vehicle, with a frame with at least one sealing surface and with at least one flexible valve flap mounted on the frame. In an idle position, the valve flap assembly abuts the sealing surface to prevent a flow of air through the pressure vent valve. When a sufficient pressure occurs, the valve flap assembly assumes an open position lifted from the sealing surface to allow a flow of air through the pressure vent valve. The valve flap assembly comprises a first flap sheet stacked upon a second flap sheet.