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Viking XT1 Fire Sprinkler 5.6K Brass Pendent QR 155F | VK3021

Compact and powerful, the Viking XT1 Quick Response Brass Pendent Fire Sprinkler activates at 155F (79C) to defend intermediate hazard structures against fire. This UL & FM approved fire sprinkler features a 5.6K orifice and a 1/2" NPT connection.
SKU Sprinkler Type Response Type Activation Temperature
VK3021BR155 Pendent Quick Response 155F (54C)
Orifice Size Thread Connection Construction Maximum Working Pressure
5.6 K-Factor 1/2" NPT Brass Body, Stainless Steel Deflector, and Nickel Alloy Spring 175 PSI
Compatible Wrench Approvals and Listings Viking Part Number Availability
22055 UL, FM 19917AB Usually Ships Within 48 Hours


Product Description

Viking XT1 Quick Response Brass Pendent Fire Sprinkler provides reliable and easily-installed protection against fire, and is perfect for intermediate hazard commercial and industrial occupancies, such as boiler rooms, attics, showrooms, and other high-temperature spaces.

Using a 3mm glass bulb, this automatic fire sprinkler opens when ambient temperatures reach 155F (79C), lowering ambient temperatures to reduce flashover and facilitate safe escape. This sprinkler replaces and improves upon the Viking VK302, with a reduced size (as short as 13/16" when installed with the NP-1 recessed escutcheon), a corrosion-resistant deflector, a smooth and finish-ready frame, and a laser-etched deflector.

Viking XT1 Quick Response Brass Pendent Fire Sprinkler has a 5.6 K-Factor and installs with 1/2" NPT thread, used in fire sprinkler systems throughout the United States. Each quick response head features a brass body, stainless steel deflector, and nickel alloy spring.

With a maximum working pressure of 175 PSI (12.1 BAR), this pendent sprinkler hangs from above-ceiling piping and may be installed in accordance with NFPA 13 and local fire codes. Each XT1 sprinkler is made by Viking, a global leader in fire protection manufacturing for nearly 100 years.

This product is UL & FM approved and appropriate for use in fire protection systems when accepted by the authority having jurisdiction.

Technical Documents

Click here to view the manual for this Viking XT1 Quick Response Brass Pendent Fire Sprinkler.

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