WATER MIST

M2 and M5 are unique low-pressure water mist nozzles offering optimum droplet size distribution, flow rates and spray coverage. They feature single fluid low pressure atomisation, an anti-vibration design and they have no moving parts for minimal maintenance and maximum reliability. Filters and blow-off caps are provided for protection against blockages.

Documents

pdf M5 Low Pressure Water Mist Fire Fighting Nozzle

Download (pdf, 1.09 MB)

• Engine rooms & Engine test benches
• Turbine enclosures
• Paint booths
• Cable tunnels
• Switch board installations
• Other enclosed occupancies with limited draft conditions, suitable for fire-protection with water mist.

Low Pressure Water Mist Fire protection nozzle. FM tested with Bureau Veritas MED approval, CCS, Lloyds's Register, ClassNK, US Coast Guard and RINA.

Note re. IMO MSC/Circ.1165 : Clogging test:

The GW M5 nozzle has successfully passed the clogging test using full contamination load and no pre-filter, thus qualifying for installation in systems with no restrictions to pipe material, using fresh or sea water.

pdf M2 Low Pressure Water Mist Fire Fighting Nozzle

Download (pdf, 564 KB)

The GW M2 Nozzles are water mist nozzles for protection of local applications such as in duct systems and engine bilges. The nozzles are suitable for spraying water mist, as well as water mist with foam enhancement. GW Sprinkler recommends the use of Angus Tridol AFFF foam when enhancement is necessary. Nozzles may be installed in the horizontal and pendent vertical positions.

M5 Local Application Fire Test

Download (pdf, 165 KB)

pdf Sprinkler System Water Quality Recommendation

Download (pdf, 67 KB)

The durability and operational reliability of any automatic sprinkler system is highly dependent on its design for purpose and continued external and internal maintenance & testing.

The real thread and “silent killer” of a pressurized wet sprinkler system is normally invisible to the eye, as it is located inside the pipe work. It is the highly complex interaction between chemical, physical and biological elements in – and in contact with, the sprinkler water.

pdf GW M5 Installation Manual no. 846_Local Protection (ref. IMO1387)

Download (pdf, 3.22 MB)

pdf GW LoFlow K15 - Automatic Low Pressure Water Mist Sprinkler / (FM Class 5560 HC-1)

Download (pdf, 618 KB)

Water Pressure: 6 - 16 bar / Ceiling height: up to 5m / Nominal temp. rating: 68°C (155F) / Enclosure area: unrestricted / Spacing: max. 3,5m / Application density: min. 3mm/m2 / Non-storage occupancies: residential, offices, meeting rooms, hotels, museums, restaurant seating areas, schools / For additional information see: Products - Sprinklers Heads - LoFlow Nozzles

NEW: RINA Type Approval is re-issued as of October 7, 2024 (CoC: FPE387424CS) to IMO Res. A800(19), allowing the GW LoFlow K15 sprinkler to be installed as spare parts, and for modification of areas on bord ships that at the date of construction had GW LoFlow K15 sprinklers installed.

pdf GW LoFlow K15 model C - R0401165 Royal Navy Full Scale Trials FWS (fine water spray) using GW LoFlow K15 C

Download (pdf, 207 KB)

This paper documents findings from full scale trials of the system* which included a sensitivity study into the operational limits of the system. The FWS (fine water spray) system reflects that of Defence Standard 02-877: "Requirements for Fine Water Spray Firefighting Systems for Main and Auxiliary Machinery Spaces on Surface Ships"

* The developed system comprises the GW LoFlow K15 model C fine water spray head mounted in a 3m x 3m array and supplied with (sea)water at a nominal pressure of 7 bar dosed with 1% of 6% AFFF concentrate.

pdf GW LoFlow K15 model C - Defence Standard 02-877, Issue 2 - Introduction

Download (pdf, 118 KB)

Defence Standard 02-877: "Requirements for Fine Water Spray Firefighting Systems for Main and Auxiliary Machinery Spaces on Surface Ships".

pdf GW AIS-135 Water Mist Nozzle (K0,64)

Download (pdf, 945 KB)

The GW AIS*-135 low pressure water mist nozzle is developed specifically to meet the performance requirements of AIS-135 Fire Detection and Suppression Systems (FDSS) for Buses. The nozzle’s extreme low water consumption makes it ideal for smaller stand-alone systems with limited water capacity – and applications where wetting must be kept at a minimum.

*AIS= Automotive Industry Standard