Milwaukee M18 4-Gallon Backpack Sprayer with SWITCH TANK™ – 140 PSI, 5-Mode Flow

Overview

The Milwaukee M18 4-Gallon Backpack Sprayer with SWITCH TANK system is designed to streamline spraying tasks by enabling interchangeable tank assemblies. This approach helps reduce cross-chemical contamination and supports quick transitions between applications, so you can stay on schedule without sacrificing control.

Power, Pressure, and Precision

Experience instant, constant pressure up to 140 PSI, paired with a 5-mode flow rate knob for precise output. Battery-powered operation eliminates manual pumping, delivering steady spray across longer sessions and a range of applications from delicate foliage to denser coverage.

• Dual Diaphragm Pump Extends pump life and improves chemical resistance.
• No Manual Pumping Battery-powered operation eliminates fatigue and ensures consistent spray output.
• Viton Seals Withstand harsh chemicals for long-term durability.
• Comfort-Focused Backpack Frame Includes padded straps, lumbar support, and hip belt for extended wear.
• Wide Mouth Opening with Strainer Simplifies filling and prevents debris from entering the tank.

Design, Comfort, and Practical Use

Thoughtful design supports extended spraying with a cushioned harness, ergonomic weight distribution, and a secure hip belt. The wide-mouth opening and integrated strainer speed refills while keeping contaminants out of the tank.

• Interchangeable tanks support quick chemical changes on the job.
• Switching tanks minimizes downtime and helps maintain workflow during property treatments.

Ideal for lawn care, landscape maintenance, greenhouse work, and larger outdoor spaces, this sprayer offers flexible control and dependable coverage. Results can vary by task, but users often notice steadier output and reduced fatigue during long spraying days.