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

The Milwaukee M18 4-Gallon Backpack Sprayer with SWITCH TANK (model 3019-20PS) is a battery-powered landscape sprayer that delivers constant, adjustable pressure up to 140 PSI with no manual pumping. This is the tool only configuration — the M18 battery and charger are sold separately. The system is built from two parts: the M18 Powered Base (motor, battery compartment, and REDLINK electronics) and an interchangeable 4-gallon Sprayer Tank Assembly (pump, hose, and wand).

What it does well

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

Is this the right sprayer for you?

This is a professional-grade sprayer for landscape maintenance crews who already run the M18 platform and want consistent pressure without hand-pumping. Because the pump, hose, and wand live on the interchangeable tank assembly, you can add a separate tank (such as the 4-Gallon Water Supply Assembly, 49-16-19WS) to switch applications without cross-chemical contamination. Choose this tool-only version if you already own M18 batteries; otherwise budget for a battery and charger.

What's included

• M18 Powered Base
• 4-Gallon Sprayer Tank Assembly (pump, hose, and wand)
• Adjustable padded harness with lumbar support and hip strap
• M18 battery and charger sold separately

Specifications

Downloads

• Warranty Document

WARNING: This product can expose you to lead, which is known to the State of California to cause cancer and birth defects or reproductive harm. For more information, go to www.P65Warnings.ca.gov.