A vacuum manifold comprising: a vacuum chamber; and a valve located between the vacuum chamber and a port and configured to passively couple the vacuum chamber to the port when the port is engaged by an object, the valve comprising: a moving component (120, 120') having a first end and a second end opposite the first end, wherein the moving component (120, 120') is movable between a closed position and an open position; a channel extending through the moving component (120, 120') between the first and second ends (122, 124); a bleed orifice (136, 136') extending through the moving component (120, 120') between the channel and a side of the moving component (120, 120') that is exposed to the vacuum chamber when the moving component (120, 120') is in the closed position; and a biasing mechanism configured to bias the moving component (120, 120') to the closed position; wherein, when the moving component (120, 120') is in the closed position, the first end of the moving component (120, 120') is in contact with an inner wall of the vacuum chamber to deter movement of gas into and out of the channel at the first end; wherein, when the moving component (120, 120') is in the open position, the first end of the moving component (120, 120') is not in contact with the inner wall of the vacuum chamber; wherein the bleed orifice (136, 136') permits gas to pass such that, when a vacuum is drawn in the vacuum chamber and the port is engaged by an object, a pressure on the second end of the moving component (120, 120') is reduced to overcome a force of the biasing mechanism and cause the moving component (120, 120') to passively move from the closed position to the open position. a vacuum chamber; and a valve located between the vacuum chamber and a port and configured to passively couple the vacuum chamber to the port when the port is engaged by an object, the valve comprising: a moving component (120, 120') having a first end and a second end opposite the first end, wherein the moving component (120, 120') is movable between a closed position and an open position; a channel extending through the moving component (120, 120') between the first and second ends (122, 124); a bleed orifice (136, 136') extending through the moving component (120, 120') between the channel and a side of the moving component (120, 120') that is exposed to the vacuum chamber when the moving component (120, 120') is in the closed position; and a biasing mechanism configured to bias the moving component (120, 120') to the closed position; wherein, when the moving component (120, 120') is in the closed position, the first end of the moving component (120, 120') is in contact with an inner wall of the vacuum chamber to deter movement of gas into and out of the channel at the first end; wherein, when the moving component (120, 120') is in the open position, the first end of the moving component (120, 120') is not in contact with the inner wall of the vacuum chamber; wherein the bleed orifice (136, 136') permits gas to pass such that, when a vacuum is drawn in the vacuum chamber and the port is engaged by an object, a pressure on the second end of the moving component (120, 120') is reduced to overcome a force of the biasing mechanism and cause the moving component (120, 120') to passively move from the closed position to the open position. a moving component (120, 120') having a first end and a second end opposite the first end, wherein the moving component (120, 120') is movable between a closed position and an open position; a channel extending through the moving component (120, 120') between the first and second ends (122, 124); a bleed orifice (136, 136') extending through the moving component (120, 120') between the channel and a side of the moving component (120, 120') that is exposed to the vacuum chamber when the moving component (120, 120') is in the closed position; and a biasing mechanism configured to bias the moving component (120, 120') to the closed position; wherein, when the moving component (120, 120') is in the closed position, the first end of the moving component (120, 120') is in contact with an inner wall of the vacuum chamber to deter movement of gas into and out of the channel at the first end; wherein, when the moving component (120, 120') is in the open position, the first end of the moving component (120, 120') is not in contact with the inner wall of the vacuum chamber; wherein the bleed orifice (136, 136') permits gas to pass such that, when a vacuum is drawn in the vacuum chamber and the port is engaged by an object, a pressure on the second end of the moving component (120, 120') is reduced to overcome a force of the biasing mechanism and cause the moving component (120, 120') to passively move from the closed position to the open position.