Abstract: A container filling unit moveable from a filling position to cleaning, non-use or ready to use positions including a base and a vertically adjustable mast, which mast provides a manifold and valving system for a single or plurality of filling heads for the precise filling of containers. The unit includes a valving arrangement which provides for full or rapid flow, reduced or slow flow and positive shut-off of flow with the flows being controlled in response to weight or volume of material delivered to the container. The unit includes a turbulence reducing discharge head which includes a positive material shut-off. The unit is useable for surface and subsurface filling and a primary aspect of the invention is to initially fill containers at a rapid rate and thereafter provide a slower filling rate to insure accurate and precise filling.