Dry Pendent Fire Sprinkler

The foinbo® Dry pendent fire sprinklers are specialized fire protection devices designed to safeguard environments where temperatures may fall below freezing or fluctuate significantly, posing a risk to traditional wet pipe sprinkler systems. These systems are commonly installed in unheated buildings, warehouses, parking garages, attics, cold storage facilities, and other spaces where frozen pipes could lead to system failure or extensive water damage. By combining the reliability of dry pipe systems with the installation flexibility of pendent sprinklers, they offer a robust solution for challenging fire protection scenarios. 

Unlike wet pipe sprinklers, which are constantly filled with pressurized water, dry pendent systems utilize a network of pipes filled with compressed air or nitrogen. This air pressure holds back a dry valve at the system's origin point. When a fire triggers one or more sprinkler heads, the heat causes the thermal element (typically a glass bulb or fusible link) to rupture, releasing the trapped air. As pressure drops, the dry valve opens, allowing water to flow from the supply line through the pipes and out of the activated sprinkler heads. This delayed water discharge ensures that pipes remain free of standing water, eliminating the risk of freezing in cold environments.

The pendent design features a downward-facing deflector that shapes the water into a conical spray pattern, ensuring even coverage of the protected area. This configuration is ideal for spaces with open ceilings or exposed structural elements, as the sprinkler head hangs vertically from the ceiling or support structure.