The A-frame loading arm is one of the more popular loading arm configurations, providing good flexibility, long reach, convenience, and ease of use. It adjusts for changes in the elevation or tilting of the vehicle during the loading/unloading process. The arm stores in an upright, near-vertical position. This allows it to swing around easily and be used for loading on either side of the island.
The A-frame’s compact storage also allows the arms to be installed close together, often on risers that are approximately the same height as the vehicle connection. The A-frame loading arms can also be mounted on staggered risers next to one another to achieve arm crossover for concurrent loading of multiple compartment trucks.
Commonly used for tank-truck bottom loading, A-frame arms also can be used in top-loading and unloading installations. Usually, they are equipped with a dry-disconnect coupling, union, or other tight-fill fittings.