Abstract: A latch system configured to permit one-way automatic passing of a swabbing tool. The latch system having a housing in communication with a well bore and a latch assembly housing a latch member with a latch. The latch is configured to selectively translate through an aperture in the housing. The latch assembly utilizes a biasing member to selectively control the location of the latch. The biasing member is sealingly separated from exposure to discharge fluids within the housing. While in an extended position, the latch allows the removal of the swabbing tool from the well bore but prevents the passing of the swabbing tool from a swab tube.