Water Type Fire Extinguisher

  • Description
  • Specification

Description

Micro Automation provides water fire extinguishers which are the most common and cost-effective tools for tackling Class A fires, which involve organic solid materials like wood, paper, textiles, and coal. They work primarily by cooling the fuel, absorbing heat energy, and turning water into steam to prevent re-ignition.

Description & Identification

  • Appearance: Typically a solid red cylinder with a red label or identification band.
  • Operating Types:
  1. Stored Pressure: The water and propellant gas (usually nitrogen) are stored together in the same container under constant pressure.
  2. Cartridge Operated: Uses a separate internal gas cartridge that must be punctured to pressurize the water before use.
  • Nozzle Types: Most use a jet nozzle for a concentrated stream, though water spray models use specialized nozzles to cover larger surface areas more efficiently.

Critical Safety Warning

  • No Electricity: Never use standard water extinguishers on electrical fires; water is a conductor and poses a severe risk of electrocution.
  • No Oil/Grease: Do not use on Class F/K (kitchen)or Class B (liquid) fires, as water can cause the burning oil to splash and spread the fire violently.

Specifications can vary by manufacturer and region (e.g., BS EN3 or IS standards), but common benchmarks for a standard 9-litre unit include:

Feature  Standard 9L Specification
Fire Rating Typically 13A to 21A (UL/EN3) or 3A to 4A (IS)
Discharge Time 40 to 60 seconds
Discharge Range 4 to 7 meters
Working Pressure Approx. 12 to 15 bar (at 20°C)
Full Weight Approx. 13.5 kg to 15 kg
Temperature Range Typically +5°C to +60°C (to avoid freezing)
Cylinder Material Mild steel with internal polyethylene lining or stainless steel