A tapping armature having an armature housing is made from plastic for liquid transport and storage containers, which are equipped with a plastic inner container having a filling port and a drain port for connection of the tapping armature, an outer casing made from metal mesh or sheet metal, and a pallet-like base made from metal. The tapping armature with the filling port of the armature housing is screwed to a connecting flange designed as a threaded flange and made from an electrically non-conductive plastic material, which is welded to the drain port of the inner container. The connecting flange of the armature housing is connected to the base of the outer casing of the transport and storage container via an grounding lead made from an electrically conductive plastic material. The connecting flange and the grounding lead are produced in two production steps with an injection molding machine according to 2K technology. In a further embodiment of the tapping armature, the connecting flange and the grounding cable are injection molded as a single part from an electrically conductive plastic, and the grounding cable is connected to the flange ring of the connecting flange by a tear-off film.