low pressure water mist nozzle

Model OH-PX2 HC2 / HC3 IBS

FIREKILL™ OH-PX2 Automatic pendent nozzle for HC2 and HC3 applications up to 7.6 m height

Min. water pressure

8 bar ≈116 psi

Max. working pressure

16 bar ≈232 psi

Drop size

DV90 < 300 μm

Water capacity design

9 nozzles

Kv metric


Flow rate at min pressure

53.7 l/min

Nominal density

4.15 mm/m2


3.60 m x 3.60 m


Aesthetic fire protection

The FIREKILL™ OH nozzles are installed recessed into the ceiling with the nozzle rosette flush with the surface and the nozzle Cover Plate protruding 10-15 mm from the surface, being the only visible parts of the nozzle in its daily use or directly into a visible pipe system in retrofit cases. The FIREKILL™ OH nozzles can be delivered in different paint and finishes making the system blend in with almost any type of surface, securing the aesthetics of the surroundings. The nozzles can also be delivered with logo print.



The FIREKILL™ system for protection of non storage applications is unique as it requires very low water pressures and water flow rates. The system utilizes the automatic low-pressure water mist nozzles Model OH-PX2 which are patented pendent automatic, fine water spray nozzles. The OH-PX2 nozzle creates a homogenous fine water mist, which absorbs heat, reduces radiant heat and causes oxygen depletion near the fire, which in turn controls and suppresses the fire. This homogenous mist consists of a high concentration of very small droplets. Because of the small mass of the droplets, the nozzle creates a large coverage, further minimizing the water expenditures and hydrating nearby combustibles.

Test and Approvals

IBS Approval

The FIREKILL™ OH-PX2 has been tested in accordance FM5560:2021 Appendix P Fire Tests for Watermist systems for the protection of non-storage occupancies, Hazard Category 2 (OH-2/HC-2) and Hazard Category 3 (OH-3/HC-3) and EN14972-1:2020 Appendix A in an ISO 17025 accredited fire test laboratory holding IBS Institute für Brandschutztechnik und Sicherheitsforschung approval.