Specifications
| Product Name | Milwaukee M18 4-Gallon Backpack Sprayer w/ SWITCH TANK™ Kit |
| Part Number | 3019-21PS |
| Brand | Milwaukee |
| System | M18™ SWITCH TANK™ |
| Tank Capacity | 4 Gallons |
| Maximum Pressure | Up to 120–140 PSI |
| Pressure Range | 20–140 PSI |
| Spray Distance | Up to 24 ft (vertical) |
| Pump Type | Dual diaphragm pump |
| Seal Material | Viton® chemical-resistant seals |
| Power Source | M18™ REDLITHIUM™ battery platform |
| Design Feature | Interchangeable SWITCH TANK™ system (prevents cross-contamination) |
| Harness | Padded straps with lumbar support and hip belt |
| Base Unit | Powered base with motor, electronics, and battery compartment |
| Tank Assembly | Includes pump, hose, and wand system |
| Application | Landscape spraying, pest control, chemical application, water supply |
| Weight | 8.6 kg |
