M18™ 4-Gallon Backpack Sprayer w/ SWITCH TANK™ (Kit)

The Milwaukee M18 4-Gallon Backpack Sprayer with SWITCH TANK (3019-21PS) is a battery-powered backpack sprayer that delivers instant, constant, and adjustable pressure up to 140 PSI with no manual pumping. This is a kit — it ships with an M18 REDLITHIUM XC4.0 battery included. The interchangeable SWITCH TANK design separates the M18 Powered Base (motor, battery compartment, and REDLINK electronics) from the 4-Gallon Sprayer Tank Assembly (pump, hose, and wand), so you can swap tank assemblies and eliminate cross-chemical contamination.

What it does well

• Adjustable pressure up to 140 PSI with a 24 ft spray height — no manual pumping required.
• 5-position flow-rate knob adjusts output from 0.1 GPM to 0.52 GPM for a wide range of applications.
• Up to 20 tanks of spraying per charge on Mode 3 with the included M18 REDLITHIUM XC4.0 battery.
• Dual-diaphragm pump for longer pump life and Viton seals for durability against harsh chemicals.

Is this the right sprayer for you?

This sprayer is built for professional landscape maintenance and pros already on the M18 battery system. The Powered Base accepts interchangeable tank assemblies — it is compatible with the 4-Gallon Water Supply Tank Assembly (49-16-19WS) and the 4-Gallon Backpack Sprayer Tank Assembly (49-16-19PS) — so you can dedicate tanks to different chemicals and avoid contamination. If you want cordless pressure control and a comfortable carry for extended spraying, this is the kit to choose.

What's included

• M18 Powered Base (motor, battery compartment, REDLINK electronics)
• 4-Gallon Sprayer Tank Assembly (pump, hose, and wand)
• M18 REDLITHIUM XC4.0 battery

Specifications

Downloads

• Safety Data Sheet
• Warranty Document