Pendent Fire Sprinkler Head, Quick Response, 1 in, 25.2 K, 212 deg F, Bronze

The Reliable Model P25 is an Early Suppression Fast Response (ESFR) fire sprinkler with a nominal K-factor of 25.2 (360 metric). The sprinkler uses a levered fusible alloy solder link in either a 165°F (74°C) or a 212°F (100°C) temperature rating. These sprinklers are designed to respond quickly to growing fires and will deliver a heavy water discharge to suppress a fire. Suppression is considered a higher level of control characterized by a sharp reduction in heat release rate along with preventing regrowth of the fire.

The Model P25 sprinkler is cULus Listed as a K25.2 (K360 metric) ESFR sprinkler for installation in accordance with NFPA 13, including the design criteria for K25.2 (K360 metric) ESFR sprinklers. FM Approvals classifies the Model P25 as a quick-response storage and non-storage sprinkler when used in accordance with FM Global Property Loss Prevention Data Sheets. Refer to Table B for additional information on applicable NFPA 13 and FM Global design critera. In addition to the general cULus Listing, the Model P25 ESFR sprinkler in 212°F (100°C) temperature rating also has a cULus Specific Application Listing for protection of Class I-IV and cartoned unexpanded Group A plastic commodity in single- and double-row open frame racks for storage up to 40 ft (12.2 m) tall under ceiling heights up to 48 ft (14.6 m) where aisles of 5 ft (1.5 m) or greater are provided. Refer to Table C for additional information on the cULus Specific Application Listing.

Model P25 ESFR sprinklers are designed to be shorter and more compact than other ESFR sprinklers, allowing greater flexibility with regard to distance from ceilings and obstructions. The sprinklers are also less susceptible to damage due to smaller deflector and frame design. The lighter P25 ESFR sprinklers passed rough use and abuse listing tests without plastic protectors.