What type of sprinkler discharges water mostly on one side?

Side wall sprinklers are designed specifically to discharge water primarily on one side. This design allows them to effectively cover areas close to walls and other structures, where a standard ceiling-mounted sprinkler may not distribute water evenly or efficiently. The placement of side wall sprinklers is typically at an angle or mounted on the side of walls to facilitate targeted coverage and to manage the flow of water effectively in spaces where ceilings may be too high or certain obstructions prevent optimal performance of traditional ceiling-mounted options.

In contrast, ceiling sprinklers, pendant sprinklers, and upright sprinklers are designed to cover larger areas from a central point or directly above. Ceiling sprinklers generally discharge water in a downward direction, pendant sprinklers also hang from the ceiling but typically in a vertical format for more efficient distribution directly below, while upright sprinklers are installed above the ceiling but spray water upward and outward. These types fail to provide the focused side coverage that side wall sprinklers do, making side wall sprinklers unique and critical in certain applications, especially in narrow spaces or against walls where adequate fire suppression is necessary.