| 摘要 |
PCT No. PCT/EP90/00198 Sec. 371 Date Nov. 8, 1990 Sec. 102(e) Date Nov. 8, 1990 PCT Filed Feb. 7, 1990 PCT Pub. No. WO90/11854 PCT Pub. Date Oct. 18, 1990.A slide gate nozzle or shut-off control valve to be mounted in a wall or lining of a vessel containing molten metal includes shut-off parts each of which are provided with passages or openings. The parts project into the vessel interior and each part has at least one approximately planar sliding surface, with such surfaces abutting and being displaceable relative to one another in order to open or close the passages or openings. |
