Technical Specification:
Model & Sprinkler I.D. No.: FA003U & FA004A
Style: Upright
Response & Bulb Nominal Dia. FA003U, FA004U – Quick response, Ø3mm
Temperature Classification: Ordinary
Nominal Temp. Rating: FA003U – 135°F / 57°C& FA004U – 155°F / 68°C
Max. Ambient Temp. Allowed²: FA003U – 115°F / 46°C & FA004U – 135°F / 57°C
Max. Recommended Ambient Temp³: FA003U – 100°F / 38°C & FA004U – 100°F / 38°C
Glass Bulb: FA003U – Orange & FA004U – Red
Thread Size (optional): NPT 1/2 OR R 1/2⁵
Nominal Orifice Size: ½ INCH
Nominal K-factor¹: 5.6 (U.S.) / 80 (metric)
Max. working pressure: 175 psig / 1.2 Mpa (12 bar)
Factory Hydrostatic Test: 100% @ 500 psig (3.4MPa)
Min. Opera􀆟ng Pressure: 7 psig / 0.048 Mpa (0.48 bar)
Sprinkler Finish (optional): Natural Brass or Chrome Plated
Escutcheon Finish: Chrome Plated or Color coated in any color
Listings and Approvals: UL (United States)