This plastic bottle filler is fitted with a valve at the end. To fill, rest the filler on the bottom of the bottle. The weight of the filler will open the valve and allow flow. To stop, lift the tube from the base of the bottle, and the flow will stop. This works with either wine or beer. Fits into the end of the simple syphon. You won't lose a drop when bottling. A must have for all homebrewers. It's what we use ourselves.
