Abstract: The invention concerns an immersion-lance for introducing a finely-particulate solid material into a metal melt, by means of a carrier gas, the internal diameter of the lance being narrowed in the region of the outlet opening. The object in the invention is to produce a lance which is suitable both for the transport of solid material and for flushing with gas. This is achieved by the features that the lance (1) contains a restrictor (8) which can be moved coaxially with the outlet opening (3), this restrictor being located, in a first end position, at a distance from the outlet opening (3) such that an open cross-section remains which is suitable for the transport of the solid material, and this restrictor being located, in a second end position, so that it narrows the outlet opening to a cross-section suitable for the transport of the gas.

Abstract: A regulating valve for dividing a flow of fluid into a plurality of equal flows, wherein a pressure responsive member is positioned in a casing in communication with inlet pressure fluid, and a movable valve member with a plurality of equal size openings therethrough is connected with the pressure responsive member for movement therewith and is positioned in operative association with a plurality of outlet openings in the casing, whereby when the pressure responsive member is moved by inlet pressure fluid, the valve member is moved accordingly to open or close the outlet openings and thus obtain a plurality of equal, regulated flows through the plurality of outlets.