1/2" UPRIGHT SPRINKLER, Quick Reaction, Brass (Date Code: 2026), UL/FM Listed
Manufacturer: Paratech, Co., Ltd. Brand: FESCO Model: PI311 Pipe Size: 1/2" Installation Direction: Upright Finish: Brass Type: Glass Bulb Reaction Speed: Quick Operation Temperature: 155°F / 200°F /286°F K Factor: 5.6 Date Code: 2025 Sprinkler Technical Data.pdf This Paratech Quick Response Upright sprinkler head features a glass bulb activating at 155/200/286 °F with a K-Factor of 5.6 and a 1/2" NPT. The PI311 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.