Dry type fire sprinkler

Dry type fire sprinklers are specialized fire protection devices designed for low-temperature environments prone to freezing (e.g., unheated warehouses, cold storage, outdoor areas). Unlike wet sprinklers that hold water in the piping, dry type models use compressed air or nitrogen to fill the pipeline—only releasing water into the sprinkler head when activated by heat (via a glass bulb or fusible link). This structure prevents pipe cracking from frozen water, ensuring reliable operation even in temperatures as low as -40°C.