Abstract: A fluid exchange system includes at least one container. A feed tube connected to a fluid source is positioned to dispense fluid into the container. A drain tube is connected to the container and is adapted to remove fluid from the container. The container is removable for cleaning.

Abstract: A fluid exchange system includes at least one container. A feed tube connected to a fluid source is positioned to dispense fluid into the container. A drain tube is connected to the container and is adapted to remove fluid from the container. The container is removable for cleaning.

Abstract: A non-siphoning float controlled valve assembly for supplying water from a source to a livestock watering tank comprises a one-piece cast aluminum hollow housing open at the bottom and having an integrally formed upwardly projecting hollow neck near one end. Means are provided for detachably connecting the housing to the side of the watering tank. The neck serves as a water-fill passage and the main portion of the housing defines a float chamber. The upper end of the neck is adapted for connection to a water supply hose or pipe, and a water-fill inlet opening having a valve seat therearound is provided in a constricted portion of the neck. A pair of anti-siphon holes extend through the neck wall.