www.senjusprinkler.com
Document No.U029423 • 01-06-2022
Page 1 of 6
The Model ZN-QR Flush Pendent Sprinklers are automatic sprinklers of the compressed fusible solder type. They are
decorative, low profile, flush mount sprinklers. The Frame and Cover of the sprinkler hide the Deflector and Valve Cap
assemblies. (Reference Figure 1) The Model ZN-QR is designed for use in Commercial occupancies. When aesthetics is
the major consideration, the Model ZN-QR should be your first choice.
They are to be used in wet pipe sprinkler systems per NFPA 13.
The Model ZN-QR has a 5.6 (80.6) K-factor. The Flush design of the Model ZN-QR features a separable escutcheon
providing 3/8 inch (9.5 mm) vertical adjustment. This adjustment reduces the accuracy to which the fixed pipe drops to
the sprinklers must be cut to help assure a perfect fit installation.
The Model ZN-QR has been designed with heat sensitivity (Quick Response) and water distribution characteristics proven
to help in the control of fires to improve the chance for occupants to escape or be evacuated. However, fire sprinkler
systems are not a substitute for intelligent fire safety awareness or fire safety construction required by building codes.
G E N E R A L D E S C R I P T I O N
Flush Pendent Sprinkler
Quick Response, Standard Coverage
(PTFE gasketed orifice seal design)
Model ZN-QR
K-Factor: 5.6
•
SIN: SS2521
WA R N I N G S
The Model ZN-QR Commercial Flush Pendent Sprinklers described herein must be installed and maintained in
compliance with this document, as well as with the applicable standards of the National Fire Protection Association,
in addition to the standards of any other authorities having jurisdiction. Failure to do so may impair the integrity of
these devices.
Because of the above cited stipulations and the varied nature of architecture, there will be some compartment designs
which cannot be fully sprinklered in accordance with the recommendations of NFPA 13. In the event of this condition,
