Abstract: A portable self-contained system for transferring liquefied gas, such as liquid petroleum gas or anhydrous ammonia, from a source tank (e.g., a railcar) to a receiving tank (e.g., a truck cargo tank), includes a portable platform providing transfer equipment such as a motor powered compressor, operating controls, transfer lines as well as valves and connectors to manage and direct the flow of fluid, and emergency controls such as shut off valves and pull away connectors for safety. A grounding system, safety shower and fire suppression system are also provided.

Abstract: In accordance with the present invention a hopper outlet is provided including transversely spaced, fixed racks on opposite sides of the outlet which extend longitudinally away from the outlet. At least one door bearing is attached to the outer end of a generally horizontally moving outlet gate. A ramp including an inclined cam surface is located below the inner outlet end wall. U-shaped elastomeric seals extend below the outlet sides and end walls and the lower leg of the seal engages the gate. A transversely extending pinion shaft includes pinions which ride upon the racks in moving between open and closed position. The pinion shaft extends through a slot in the door bearing. The slot is elongated vertically to allow vertical movement of the gate and the door bearing relative to the pinion shaft as the gate is ramped upwardly into closed position and downwardly into open position.

Abstract: A fluidizing outlet is provided having plenum sheets which define with the sides of the bottom pan of the outlet a plenum chamber. At least a portion of the lower edges of the plenum sheets are spaced from the sides of the bottom pan a suitable distance to provide gaps which form first fluidizing openings. Openings are provided in the upper portion of the plenum sheets to provide second fluidizing openings to fluidize the lading. The respective sizes of the first and second fluidizing openings are of a size sufficient to fluidize the lading, and are sufficiently large that they are not readily clogged by contaminates; for example, from dirty supply air and/or improper outlet cleaning to prevent operation of the outlet, and of a size sufficient that substantially all of the lading is removed during unloading. It has been found that the spacing between the outlet pan and the plenum sheets forming the first fluidizing openings should be at least about 0.03 inches, and should not exceed about 0.04 inches.