Vertical Sidewall Sprinkler

The SD2133, SD2121, ½” orifice, standard vertical sidewall sprinkler is designed for standard installation. The design provides a crescent-shaped water discharge pattern for installation along a wall or under a beam or ceiling.

The design incorporates state-of-the-art, heat responsive, frangible glass bulb design (standard or quick response) for prompt, precise operation. The die cast frame is more streamlined and attractive than traditional sand cast frames.

It is cast with a hex-shaped wrench boss to allow easy tightening from many angles, reducing assembly effort. This sprinkler is available in various temperature ratings and finishes to meet many design requirements.

The recessed pendent should be utilized with a recessed escutcheon which provides up” of adjustments. All sprinklers are manufactured using the time proven Belleville seal used exclusively by all major manufactures to ensure long life and safe operation.

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Sprinkler Identification Number

Standard SD2133 (bulb 5mm), Quick Response SD2121 (bulb 3mm)


Vertical Sidewall

K Factor

5.6gpm/psi½. (80lpm/bar½)

Response Time Index (RTI)

Standard 50

Quick Response 30

Nominal Thread Size


Orfice Size


Max. Working Pressure


Factory Hydrostatic Test

100%@500PSI(3450 kPa)

Min. Operation Pressure

7 PSI(48 kPa)

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