Manufacturer: Paratech, Co., Ltd.

Brand:  FESCO

Model:  PI421

Pipe Size:  3/4" NPT

Installation Direction:  Pendent

Finish:  Chrome

Type:  Glass Bulb

Reaction Speed:  Quick

Operation Temperature:  155°F 

K Factor:  8.0

 This Paratech Quick Response Pendent sprinkler head features a glass bulb activating at 155 Degrees Fahrenheit with a K-Factor of 8.0 and a 3/4" NPT. The PI421 is used in commercial/residential properties and is cULus listed for use when installed in accordance with NFPA13 rules for wet pipe sprinkler systems. 

 This Sprinkler contains a glass bulb that consists of a special liquid. Unlike conventional fuses, the glass bulb design simplifies the sprinkler assembly and size, ensuring stable operation at the designated temperature.