What class of fire is this extinguisher for?

It is designed exclusively for Class A fires, which involve solid combustible materials like wood, paper, and cloth.

What is the minimum required throw distance for the water jet?

The minimum horizontal throw of the water jet must be 10 metres, as specified in Clause 6.3.

What is the minimum effective discharge time?

The extinguisher must discharge at least 95% of its contents in a minimum of 60 seconds, as per Clause 6.2.

What pressure is the extinguisher body tested to?

The extinguisher body is hydrostatically tested to a pressure of 3.5 MPa (approximately 35 kgf/cm²) for 2.5 minutes without leakage (Clause 7.1).

IS 13385

: 1992

Specification for fire extinguisher 50-litre capacity wheel mounted water type (Gas Cartridge)

CurrentSpecializedSpecificationFire Safety · Fire Fighting

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This standard specifies the requirements for the materials, construction, performance, and testing of 50-litre capacity, wheel-mounted water type fire extinguishers that use a gas cartridge for expulsion. It covers aspects like body construction, anti-corrosive treatment, nozzle design, and discharge characteristics for Class A fires.

Specification for fire extinguisher 50-litre capacity wheel mounted water type (Gas Cartridge)

Quick Reference Values

Nominal Water Capacity50 ± 2.5 Litres

Minimum Period of Effective Discharge60 seconds

Minimum Throw (jet length)10 metres

Minimum Discharge Volume95%

Body Hydrostatic Test Pressure3.5 MPa

Body Burst Pressure (Minimum)5.5 MPa

Practical Notes

Primarily suitable for Class A fires (combustible solids like wood, paper, textiles). It must not be used on electrical, flammable liquid (Class B), or metal fires.

Regular maintenance as per IS 2190 is crucial for operational readiness, including checking the gas cartridge weight, inspecting the hose for cracks, and ensuring the wheels are functional.

The large capacity and wheeled design make it suitable for areas with significant Class A fire risk, such as warehouses, timber yards, and large factory floors.