Abstract: A valve box for use with a water valve from an aqueduct branch pipe. The valve box comprises a pair of endwisely connected elongated coaxial cylinders, a cover removably mounted to the top of the upper cylinder and having a downturned cylindrical flange depending therefrom within the main cylinders, and a floor wall having an upturned cylindrical flange exteriorly of the main cylinders. Cross-sectionally V-shape, elastomeric, annular, self-tightening gaskets ensure liquid-tight interconnection of the two main cylinders, of the upper cylinder with the upper flange and of the lower cylinder with the lower flange. The rotatable shaft of the valve extends through the floor wall, wherein the cross-sectionally square head thereof can be accessed from ground level by removing the cover. The two flanges are moreover releasably locked to the cylinders by bayonet joints.