Milwaukee 3019-20PS M18 4-Gallon Backpack Sprayer w/ SWITCH TANK – Tool Only

The Milwaukee 3019-20PS M18 Cordless 4-Gallon Backpack Sprayer with SWITCH TANK is designed for professionals who need precise pressure control and a reliable, battery-powered sprayer without manual pumping. With adjustable pressure up to 140 PSI and a 24-foot vertical spray distance, this backpack sprayer delivers consistent, high-performance spraying for landscaping, pest control, and agriculture applications. The 5-mode flow rate control allows users to adjust output from 0.1 to 0.52 GPM, making it versatile for different spraying needs. Featuring an interchangeable tank design, it eliminates cross-chemical contamination and allows for cost-effective tank replacements. The dual diaphragm pump and Viton® seals provide increased durability against harsh chemicals, ensuring long-term performance. Comfortable padded straps, lumbar support, and a hip belt help distribute weight evenly, reducing fatigue during extended use. Powered by the M18 REDLITHIUM XC3.0 battery (sold separately), this sprayer can operate up to 20 tanks per charge for all-day productivity.

Milwaukee M18 4-Gallon Backpack Sprayer w/ SWITCH TANK At a Glance

• Battery-powered, no manual pumping: Delivers constant, adjustable pressure up to 140 PSI.
• 5-mode flow rate control: Adjusts spray output from 0.1 to 0.52 GPM for versatility.
• Interchangeable tank design: Reduces cross-chemical contamination and lowers replacement costs.
• Up to 20 tanks per charge: Long-lasting runtime with M18 REDLITHIUM XC3.0 battery (sold separately).
• Dual diaphragm pump: Provides longer pump life and consistent performance.
• Viton® seals: Increase durability and resistance to harsh chemicals.
• Optimized ergonomic design: Padded straps, lumbar support, and hip belt for comfort.
• Wide mouth opening with strainer: Makes pouring easier and prevents debris buildup.
• High-visibility tank markings: Ensures accurate filling and monitoring.
• Compatible with other SWITCH TANK assemblies: Works with the 4-Gallon Water Supply Tank (49-16-19WS).

Markets

• Landscaping & Grounds Maintenance: Provides a consistent spray for fertilizers, herbicides, and pesticides.
• Pest Control Services: Delivers precise pressure for insecticide and rodenticide applications.
• Agriculture & Farming: Ensures even spraying for crops, orchards, and greenhouses.
• Municipal & City Work: Ideal for spraying de-icers, disinfectants, and weed control solutions.
• Horticulture & Greenhouses: Offers controlled application of nutrients and pesticides for plant health.
• Construction & Remediation: Helps with dust control and surface preparation for painting or sealing.
• Trade Schools & Training Centers: Provides a reliable teaching tool for pesticide application training.

This battery-powered sprayer is an essential tool for landscapers, pest control professionals, and agricultural workers who require precision, efficiency, and durability in their spraying applications. Unlike manual pump sprayers, the Milwaukee M18 SWITCH TANK Backpack Sprayer eliminates repetitive hand pumping, improving workflow and reducing strain. The adjustable pressure settings allow users to switch between low-pressure coverage for delicate plants and high-pressure spray for penetrating thick vegetation. The interchangeable tank system also provides flexibility for different chemicals, ensuring safe and efficient operation.

Milwaukee 3019-20PS M18 4-Gallon Backpack Sprayer w/ SWITCH TANK – Tool Only Features

• Instant, Constant and Adjustable Pressure for Ultimate Control
• Add-on Interchangeable Tank Assembly to Eliminate Cross-Chemical Contamination
• Run-time: Up to 20 tanks per charge with M18™ REDLITHIUM™ XC3.0 Battery on Mode 3
• Adjustable padded harness with lumbar support and padded hip strap for added comfort
• Optimized design for better weight distribution
• Dual Diaphragm Pump: For Longer Pump Life
• Critical seals: Viton® for increased durability against chemicals
• Wide Mouth Opening for Easier Pouring
• High visibility tank markings for easy fill management
• Tank identification stickers for easy tank identification
• Easy access latches for quick battery and tank swaps
• Compatible Tank Assemblies: 4-Gallon Water Supply (49-16-19WS) & 4-Gallon Backpack Sprayer (49-16-19PS)

Milwaukee 3019-20PS M18 4-Gallon Backpack Sprayer w/ SWITCH TANK – Tool Only Includes

• (1) M18 Powered Base w/ SWITCH TANK™
• (1) 4-Gallon Sprayer Tank Assembly w/ SWITCH TANK™ (49-16-19PS)
• (1) Stainless Steel Wand
• (1) Adjustable Nozzle (49-16-2806)
• (1) Fan Nozzle (49-16-2806)
• (1) Angled Nozzle Adapter (49-16-2806)

Milwaukee 3019-20PS M18 4-Gallon Backpack Sprayer w/ SWITCH TANK – Tool Only Specifications

• Voltage: 18V
• Battery Type: M18 REDLITHIUM (Battery Sold Separately)
• Power Source: Cordless
• Tank Capacity: 4 Gallons
• Pressure Range: Up to 140 PSI
• Flow Rate: 0.1 – 0.52 GPM
• Maximum Vertical Spray Distance: 24 ft
• Maximum Horizontal Spray Distance: 3 ft
• Weight: 17.4 lbs (without battery)
• Dimensions: 22.5″ H x 15″ W x 10.5″ L
• Warranty: 3 Years on Base, 1 Year on Tank

Milwaukee 3019-20PS M18 4-Gallon Backpack Sprayer w/ SWITCH TANK – Tool Only Warranty

• Milwaukee’s 3 Year Tool , 1 Year Tank Limited Warranty

Why Customers Choose the Milwaukee M18 4-Gallon Backpack Sprayer w/ SWITCH TANK – Tool Only

The Milwaukee M18 SWITCH TANK Backpack Sprayer is a powerful, user-friendly solution for spraying applications that require efficiency, comfort, and durability. Whether you’re applying pesticides, fertilizers, or herbicides, this system delivers consistent pressure and precise coverage with minimal effort. The interchangeable tank design makes it easy to switch between applications, ensuring safety and convenience for professionals in landscaping, pest control, and agriculture.