Abstract: A modular container filling apparatus includes a simple pilot valve which can be operated by a push button, a bottle-engaging yoke, or a manual valve at the distal end of a bucket filling hose. The modular construction of the apparatus allows a plurality of units to be mounted side by side on a modular water manifold by bayonet-type sealing connections. An anti-foam venturi and spout mixes chemicals with the water and minimizes foaming when filling a bottle. A plurality of chemicals can be selected by a rotational selector without intermixing.