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Senju Fire Sprinkler 5.6K Brass Upright QR 162F | SS2552

Senju FR-QR Quick Response Brass Upright Fire Sprinkler activates at 162F (72C) to defend ordinary hazard commercial occupancies against fire. This UL & FM approved fire sprinkler features a 5.6K orifice and a 1/2" (12.7 mm) NPT connection.
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Part NumberConstructionConnectionOrifice
SS2552BR162 DZR brass frame and phosphor bronze deflector 1/2" (12.7 mm) NPT 5.6K
Temperature RatingSprinkler WrenchMaximum Working PressureApprovals and Listings
162F (72C) Wrench - Senju Wrench for FR Heads 175 PSI (12.1 BAR) UL, ULC, FM
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Product Description

Senju FR-QR Quick Response Brass Upright Fire Sprinkler delivers decorative, affordable defense against fire in ordinary hazard commercial occupancies such as hotel lobbies, office buildings, churches, and restaurants. Using a heat-activated fusible metal assembly, this automatic fire sprinkler opens when ambient temperatures reach 162F (72C), supporting rescue and evacuation efforts by lowering ambient temperatures.

The Senju Model FR-QR has a 5.6 K-Factor and installs with 1/2" (12.7 mm) National Pipe Thread (NPT), used in fire sprinkler systems throughout the United States. This Quick Response Fire Sprinkler features a brass finish, DZR brass frame, and phosphor bronze or stainless steel deflector.

With a maximum working pressure of 175 PSI (12.1 BAR), this upright sprinkler installs deflector-up to prevent debris and ice accumulation and may be installed and used in accordance with NFPA 13 and local fire code. Each Model FR-QR sprinkler is made by Senju, Japan's largest manufacturer of fire-suppression products.

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 data sheet for the Senju FR-QR Quick Response Brass Upright Fire Sprinkler.

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