What is the rated capacity of this extinguisher?

135 litres, with a tolerance of ± 5 litres (Clause 3.1).

What is the minimum throw range of the foam jet?

The minimum effective throw of the jet is 10 metres (Clause 6.2 and Table 1).

What is the minimum discharge time?

The extinguisher must discharge at least 90% of its contents in a minimum of 180 seconds (Clause 6.3 and Table 1).

What pressure is the body tested to?

The body must withstand a hydrostatic test pressure of 3.5 MPa (or 35 kgf/cm²) for 2.5 minutes without leakage (Clause 8.1).

IS 14951

: 2001

Fire Extinguisher - 135 Litres Capacity Mechanical Foam Type

CurrentSpecializedSpecificationFire Safety · Fire Fighting

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This standard specifies the requirements for materials, construction, performance, and testing of 135-litre capacity wheeled mechanical foam fire extinguishers. These are used for fighting large Class A and Class B fires in high-risk environments like industrial plants and aircraft hangars.

Fire Extinguisher - 135 Litres Capacity Mechanical Foam Type

Quick Reference Values

Nominal Capacity135 litres

Body Hydraulic Test Pressure3.5 MPa (35 kgf/cm²)

Minimum Jet Length10 m

Minimum Period of Discharge (for 90%)180 seconds

Minimum Bulk Discharge90 percent

Body Sheet Thickness (Mild Steel)2.5 mm

Expellant Gas Cartridge Capacity (CO2)1 kg

Practical Notes

This standard has been superseded by IS 16018:2012. For new manufacturing or procurement, IS 16018 should be referred to.

These are large, trolley-mounted units requiring at least two trained persons for effective operation.

Ensure the correct type of foam concentrate (as per IS 4989) is used for refilling, appropriate for the specific fire risks (e.g., AFFF for flammable liquid spills).