Bottom operator for top operated bottom installed tank car valve assembly

摘要

In accordance with the present invention, an unloading assembly for a top operated lading valve is disclosed. The unloading assembly includes means for connecting an unloading outlet chamber to the existing depending valve outlet chamber of the lading valve. The unloading outlet chamber is hollow and is in fluid communication with the lading valve outlet chamber. The unloading assembly includes an operating shaft extending upwardly through the unloading outlet chamber and through the valve outlet chamber. The operating shaft includes a non-round connection portion adapted to engage a non-round connection portion of the top operating rod.