An exemplary refill unit for an dispenser includes a container for holding a liquid. The container has bottom side with a neck extending from the bottom side. A pump is connected to the neck of the container. The pump has a liquid pump portion that has a liquid pump inlet. The liquid pump inlet is located above the bottom of the container. A shroud is located over the liquid pump inlet and extends downward toward the bottom of the container. An air bleed valve is included and located in the top of the shroud.