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Milwaukee M18 4 gallon backpack sprayer with SWITCH TANK, white tank and red power base, black padded harness, hose and spray wand attached, brass and plastic nozzle tips shown in front on white background

Includes graphic showing Milwaukee M18 power base with shoulder harness and separate 4-gallon SWITCH TANK sprayer assembly with hose and spray wand.

Milwaukee M18 4-gallon backpack sprayer diagram highlighting adjustable padded harness, high visibility markings, 5-mode pressure adjustment knob (20–140 PSI), interchangeable tank design, tank ID sticker area, easy access latches, optimized tank design, and protected battery compartment.

Milwaukee backpack sprayer accessories including hose handle and wand assembly 49-16-2804, 18 inch short sprayer wand 49-16-2729, and sprayer nozzles 49-16-2806 displayed on white background with Available Accessories header

Green safety label listing compatible liquids for backpack sprayer including pesticides, herbicides, insecticides, fungicides, and fertilizers, with warning stating no flammable liquids and read manual for details.

Close-up of MILWAUKEE M18 Backpack Sprayer pressure adjustment dial with gloved hand turning 5-mode selector, graphic showing flow rates from 0.10 to 0.52 GPM.

Worker wearing backpack sprayer applying insecticide to tall shrubs beside green metal building, graphic indicating up to 24 ft vertical spray distance.

Worker wearing Milwaukee SWITCH TANK backpack sprayer applying chemical along building foundation, text overlay reads “Best pressure control. No manual pumping. Interchangeable tanks.”

Worker wearing Milwaukee SWITCH TANK backpack sprayer applying liquid treatment to residential lawn, house and landscaping visible in background.

Worker wearing Milwaukee SWITCH TANK backpack sprayer applying liquid treatment to ornamental grasses beside residential building exterior. Alt Text: Milwaukee SWITCH TANK backpack sprayer tanks labeled insecticide and selective herbicide positioned in pickup truck bed with spray wands attached. Alt Text: Worker wearing green gloves filling Milwaukee SWITCH TANK sprayer tank assemblies from large indoor water container with hoses and backpack sprayer base nearby. 3019-20PS MILWAUKEE M18™ 4-Gallon Backpack Sprayer w/ SWITCH TANK™ (Tool Only) PRODUCT OVERVIEW The M18™ 4-Gallon Backpack Sprayer w/ SWITCH TANK™ delivers the industry's best pressure control, with no manual pumping and an interchange tank design. The sprayer's instant, constant, and adjustable pressure enables ultimate spraying control across a wide range of applications all with no manual pumping required for reduced fatigue. The interchangeable tank design allows you to add on tank assemblies for different spraying applications, eliminating cross-chemical contamination. KEY FEATURES • 5 spray settings for increased application range • 20'+ vertical spray distance • Add-on and interchange tank assembly to eliminate cross-chemical contamination INCLUDES (1) M18™ 4-Gallon Backpack Sprayer w/ SWITCH TANK™ (Tool Only) Meta Description: Consistent 20–140 PSI output with no manual pumping, the 3019-20PS Milwaukee M18 4-Gallon Backpack Sprayer w/ SWITCH TANK delivers adjustable pressure control and interchangeable tank design to prevent cross-chemical contamination for lawn care, pest control, and property maintenance applications.

Milwaukee SWITCH TANK backpack sprayer tanks labeled insecticide and selective herbicide positioned in pickup truck bed with spray wands attached.

Worker wearing green gloves filling Milwaukee SWITCH TANK sprayer tank assemblies from large indoor water container with hoses and backpack sprayer base nearby.

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

SKU: 3019-20PS

Category: Outdoor Power Equipment

$578.00

Spray herbicides, fertilizers, and treatments with controlled cordless pressure using the 3019-20PS MILWAUKEE M18 4-Gallon Backpack Sprayer with SWITCH TANK, designed for consistent spray performance without manual pumping.

Who this tool is for: Landscapers, grounds crews, agricultural operations, property maintenance teams, and facility maintenance professionals.

2 in stock

Description

PRODUCT OVERVIEW
The M18™ 4-Gallon Backpack Sprayer w/ SWITCH TANK™ delivers the industry’s best pressure control, with no manual pumping and an interchange tank design. The sprayer’s instant, constant, and adjustable pressure enables ultimate spraying control across a wide range of applications all with no manual pumping required for reduced fatigue. The interchangeable tank design allows you to add on tank assemblies for different spraying applications, eliminating cross-chemical contamination.

KEY FEATURES
• 5 spray settings for increased application range
• 20’+ vertical spray distance
• Add-on and interchange tank assembly to eliminate cross-chemical contamination

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