Victaulic S271ACQ440 Upright Sprinkler 155F Quick Response

Product Description

The VICTAULIC COMPANY S271ACQ440 is a FireLock Standard Upright Sprinkler Head from the Series FL-QR line, Model V2704. It is designed for fire suppression systems in commercial and residential structures where quick-response activation is required. The sprinkler uses a 3 mm glass bulb element rated at 155 degrees F to trigger water discharge. Key construction materials include a brass frame and bronze deflector, with a white painted finish. The 1/2 inch NPT inlet connects to standard fire suppression piping. This sprinkler carries a K Factor of 5.6 and is installed by licensed fire suppression contractors as part of a certified wet-pipe or dry-pipe sprinkler system.

The S271ACQ440 is suited for upright installation in standard hazard occupancies including light and ordinary hazard applications. Its quick-response bulb shortens activation time compared to standard-response elements, making it appropriate for life-safety-critical zones. The 1-7/16 inch deflector distributes water in the upright pattern required for ceiling-concealed pipe runs. Installation in areas subject to mechanical damage, freezing, or corrosive environments should be evaluated against local fire code requirements before selection. Consult the applicable NFPA 13 system design criteria for spacing, coverage area, and minimum flow requirements.

Key Features

• Quick-response 3 mm glass bulb rated at 155 degrees F for faster activation
• K Factor of 5.6 for standard hydraulic flow calculations
• 1/2 inch NPT connection compatible with standard fire suppression pipe fittings
• Brass frame and bronze deflector construction for durability
• White painted finish for clean appearance in finished ceiling spaces
• Factory hydrostatic tested 100 percent at 500 psi per unit

Compatibility

Designed as an OEM-style replacement or new-installation sprinkler for fire suppression systems requiring a 1/2 inch NPT upright standard sprinkler with a K Factor of 5.6 and 155 degrees F quick-response rating. Compatible systems must meet the maximum working pressure ratings of 175 psi (FM) and 250 psi (UL).

Installation Notes

Installation must be performed by a licensed fire suppression contractor in accordance with NFPA 13 and applicable local fire codes. The system must be depressurized and drained before removing or installing sprinkler heads. Use the specified 3/16 inch hex-bit wrench for installation to avoid damage to the frame or bulb. Do not paint over, coat, or modify the sprinkler after installation, as this will void listings and impair function.