Eduction pipe with guide sleeve and seal to draw liquid from the bottom and allow telescoping when tank top moves down under impact

摘要

In accordance with the present invention a low profile sump is provided in the bottom of a railway tank car which does not extend below the tank sufficiently far as to require a skid. The eduction pipe includes a lower fixed eduction pipe portion which extends into the lower portion of the sump, and an upper movable eduction pipe portion which telescopically engages the lower eduction pipe portion for a distance at least equal to the distance that the tank top moves downwardly relative to the tank bottom when the car is impacted. Preferably the movable upper eduction pipe telescopes within the fixed, lower eduction pipe. Preferably a seal is provided between the fixed and movable eduction pipe portions to prevent air leakage into the eduction pipe during the final stages of unloading.