Watermist Applicator 241

The Watermist Applicator 241 (FI-WMA241) is the largest and most extensive watermist applicator in the Fire Isolator range, developed as an extended version of the FI-WMA126 and FI-WMA138. It is specifically engineered for fighting car fires and limiting electric vehicle (EV) battery fires by delivering water mist directly to the underside of the vehicle—where lithium-ion battery fires typically originate.

Thanks to its extended length, the FI-WMA241 can cool almost the entire bottom of the vehicle, significantly reducing heat, slowing thermal runaway, and limiting fire spread. In addition to under-vehicle placement, the applicator can also be positioned sideways, providing flexible deployment options depending on the incident layout.

Performance and Application

The FI-WMA241 is designed for high-capacity cooling in large or fully involved vehicle fires, making it particularly suitable for:

• Parking garages

• Tunnels

• Ferries

• Industrial and logistics facilities

At 4 bar water pressure, each unit produces a minimum watermist output of 215 liters per minute, ensuring effective cooling over a wide surface area and improving fire control in prolonged EV fire scenarios  .

Design and Handling

• Weight: 30 kg

• Designed for ground deployment under vehicles

• Can be placed lengthwise or sideways depending on access and fire development

• Pivotable handle, enhancing positioning flexibility

• Handle is not electrically conductive, increasing operator safety

Although larger than other models, the FI-WMA241 remains purpose-built for controlled placement rather than handheld use.

Materials and Construction

• Manufactured from aluminium, providing durability while keeping overall weight manageable

• Designed for repeated professional firefighting operations in harsh environments

Nozzle Configuration

• Nozzles: 41 full-cone nozzles (Ø 2.4 mm)

• Driving rings: Ø 80 mm, directionally fixed

• Optimized for uniform mist distribution across a wide area 

Patented System

The FI-WMA241 is part of Fire Isolator’s patented watermist applicator technology, making it unique in the market and specifically adapted to modern EV fire challenges.

Connections

• One Storz C-2 connector

Key Benefits

• Covers almost the entire underside of a vehicle

• High-output cooling for severe EV battery fires

• Flexible placement (under-vehicle or sideways)

• Patented, market-unique solution

• Ideal for large-scale or prolonged vehicle fire incidents