FR-QR (SS2551) Pendent Sprinkler Head Only (162°F), QR, K=5.6, White

Part #




We currently have 28719 in stock.

Approvals UL, FM

K-Factor K=5.6  

Thread Size1/2” NPT (15mm)  

Maximum Working Pressure 175psi (12.1 bar)  

Response Quick  

Coverage Standard  

Temperature Rating 162°F/72°C  

Overall Length 2-13/64" (56mm)  

Vertical Adjustment 

1/2 inch (12.7mm) with D1 Recessed Escutcheon*, or 
3/4 inch (19.05mm) with D2 Recessed Escutcheon (approved by UL only).  

Color White 

*Due to FM Approval Standard 3.2.13 by Class Number 2000, use in combination with a sprinkler head rated higher than 255°F is not approved by FM.

  • Designed for use in light and ordinary hazard commercial occupancies
  • Laser etched lot on frame
  • Solder link type makes it more durable than glass bulb sprinklers

Download Datasheet

 WARNING: Cancer and Reproductive Harm

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