The Allegheny 40799A is a 3-inch aluminum, short radius, 90-degree, Y-fitting with belled ends for tank trailer piping applications. This welded-style fitting features belled ends that provide better piping alignment and faster installation compared to traditional butt-welded fittings. Constructed from aluminum with a 3-inch short radius, the 40799A offers a lightweight yet durable solution for creating angled branch connections in tank trailer piping systems.