Sentry Sprinklers Model SY1221 is an Automatic and or Open Standard Response, Pendent and Recessed Pendent Sprinkler head that utilizes a frangible thermo-sensitive glass bulb to operate the sprinkler. The sprinkler is available in various finishes and temperatures. Sprinkler Model SY1221 is listed and approved for standard coverage for Light and Ordinary hazards. Model SY1221 is a 8.0 K-factor (114 metric) Sprinkler that is intended for use in fire sprinkler systems designed in accordance with the standard installation rules recognized by the applicable listings or approved agency. The Pendent Sprinkler produces a hemispherical water distribution pattern below the deflector.
The UL listed recessed version of SY1221 is intended for use in areas with a finished ceiling. The Sprinkler uses Model SY8020 Two-Piece Escutcheon with a recessed adjustment up to ¾” (19 mm) from the flush ceiling.