Victaulic S271LEQ440 Fire Sprinkler Head 175F Qr 1/2 Npt

Product Description

The VICTAULIC S271LEQ440 is a residential concealed pendent fire sprinkler head rated for 175 degrees F activation. Based on the V2744 series, it carries a K-factor of 5.6, which governs the flow rate discharged during activation. The quick-response (QR) thermal element reduces activation time compared to standard-response models, a critical characteristic in residential fire suppression systems. The white finish is suited for concealed ceiling installations where aesthetics are a consideration. Connection is via 1/2 inch NPT threads, the standard size for residential sprinkler branch lines. Installation is performed by licensed fire protection contractors.

This sprinkler head is intended for residential fire suppression systems, including single-family homes, townhomes, and low-rise multifamily construction. The 175 degrees F temperature rating makes it appropriate for standard ambient temperature areas such as living spaces, bedrooms, and hallways. The quick-response element and K5.6 flow coefficient align with residential system hydraulic design requirements under NFPA 13D and NFPA 13R applications.

Key Features

• 175 degrees F (79 degrees C) activation temperature rating for standard residential environments
• K-factor of 5.6 for hydraulic flow calculation in residential system design
• Quick-response (QR) thermal element for faster activation compared to standard-response ratings
• 1/2 inch NPT threaded connection matches standard residential sprinkler branch line sizing
• White finish suitable for concealed pendent ceiling installations

Compatibility

Designed as an OEM-style replacement for residential fire sprinkler systems requiring a 1/2 inch NPT, K5.6, quick-response pendent sprinkler head rated at 175 degrees F.

Installation Notes

Installation must be performed by a licensed fire protection contractor in accordance with NFPA 13, NFPA 13D, or NFPA 13R as applicable to the project classification. The sprinkler system must be depressurized and drained before removing or installing any sprinkler head. Use an appropriate sprinkler head wrench to avoid damaging the deflector or frame. Never paint or coat the sprinkler head after installation, as this can impair thermal response and void listings.

Technical Specifications

• Temperature Rating: 175 degrees F (79 degrees C)
• K-Factor: 5.6
• Response Type: Quick Response (QR)
• Connection Size: 1/2 inch NPT
• Finish: White
• Series: V2744

Standard Information

• Brand: VICTAULIC
• Manufacturer Part Number: S271LEQ440