| Model | W-150 | W-SP-45 |
| Extinguishing material | 150-litres (34-gallons) of plain water, in main cylinder | 45-litres (10-gallons) of plain water, in main cylinder |
| Construction | Main cylinder of 10 gauge M.S. sheet, welded | Main cylinder of 10 gauge M.S. sheet, welded |
| Pressurizing agent | CO2 gas in a cartridge fitted on the external side of main body | Nitrogen stored pressure |
| Duration of discharge | 120-180 seconds | 30-50 seconds |
| Operating pressure | 7kg/cm^2 (nominal) approx. | 7kg/cm^2 (nominal) approx. |
| Range of jet | 15-20 meters (50-70 feet) | 10-15 meters (35-50 feet) |
| Wheels | 2 rubber wheels of 400mm (16") dia. | 2 rubber wheels of 225mm (9") dia. |
| Attachments | 25mm x 7.5m (1" x 25 feet) high pressure rubber hose; one on-off valve with hand control; one nozzle | 18mm x 3m (3/4" x 10 feet) high pressure rubber hose; one on-off valve with hand control; one nozzle |
| Finish | Fire brigade red | Fire brigade red |
| Label | Non damaging with instructions for operation | Non damaging with instructions for operation |