Patent ID: 7198062

Claim:
A valve for controlling a flow of a fluid between a first environment to a second environment, said valve comprising: a frame adapted to fit within a perimeter of an aperture in a divider separating the first environment from the second environment; an aft gate movable within the frame to control a flow of the fluid through the aperture between the first environment and the second environment, the aft gate comprising: a trailing edge comprising a baffle extending past an aft edge of the frame and covering a portion of an exterior face of the frame when the aft gate is in an open position, the baffle including a plurality of 3-D notches in a front side of the baffle; and a forward gate movable within the frame to control a flow of the fluid through the aperture between the first environment and the second environment, the forward gate comprising: a trailing edge comprising a plurality of 3-D notches in a front side of the trailing edge.