low pressure water mist nozzle


FIREKILL™ OH-UPR Automatic upright nozzle for OH2 Car park protection

Min. water pressure

6 bar ≈87 psi

Max. working pressure

16 bar ≈232 psi

Drop size

DV90 < 300 μm

Water capacity design

144 m2

Kv metric


Flow rate at min pressure

47.5 l/min

Nominal density

3.00 mm/m2


4.00 m x 4.00 m


Aesthetic fire protection

The FIREKILL™ OH upright nozzles are installed directly into a visible pipe system. 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.



FIREKILL™ system for protection of car parks 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-UPR which are patented upright automatic, fine water spray nozzles. The OH-UPR 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

DnV Third party witness

The FIREKILL™ OH-UPR system has been successfully tested by an ISO17025 accredited test lab and 3. party accepted to the EN 14972:2020 Part 5 watermist standard for non-automatic, fully enclosed garages. The test protocol is a revised version of the VdS car park test protocol. The test is carried out with third party witness from DnV.