Check out the video for a brief introduction to the world of Low Pressure Watermist. Scroll down for more information, or feel free to contact us.
This toolbox includes: Sprinklers, water spray, low pressure, medium and high pressure watermist technologies.
As watermist technology has developed, evidence shows that full-scale fire testing and not standardized droplet sizes will prove a systems ability to perform satisfactorily on a tested application.
Evidence proves that for applications over the range of fire classes, different fire-fighting techniques are required to optimise watermist performance. This is where the research and development of the nozzle and systems manufacturing companies are always active.
For our purposes we need to know it works and is reliable. We find this through fire testing and component testing. For a reliable and acceptable code/ standard compliant watermist system you cannot have one without the other.
Only successful fire tests done to recognised test protocols and successful component tests published in a printed or online record by the testing laboratory are acceptable.
- BRITISH STANDARD DEFINITIONS OF WATERMIST -
BS8489-1:2016 - Fixed fire protection systems – Industrial and commercial watermist Systems - Part 1: Code of practice for design and installation
Water spray for which the Dv0,90 is less than 1 mm measured in a plane 1 m from the nozzle at its minimum operating pressure
NOTE Dv0,90 is the drop diameter such that the cumulative volume, from zero
diameter to the respective diameter, is nine tenths of the corresponding sum of the total distribution.
BS 8458:2015 - Fixed fire protection systems – Residential and domestic watermist systems – Code of practice for design and installation
Water spray for which the Dv0,90 is less than 1 mm measured in a plane 1 m from the nozzle at its minimum operating pressure
NOTE Dv0,90 is the drop diameter such that the cumulative volume, from zero diameter to the respective diameter, is nine tenths of the corresponding sum of the total distribution.
The watermist industry is no longer rigid when it comes to droplet sizes and definitions in standards are changing to reflect this.