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4-Gallon Sprayer Tank Assembly w/ SWITCH-TANK™
The image shows a Milwaukee M18 4-gallon sprayer tank assembly with Switch Tank, model number 3019-20PS. The sprayer is white and red with a black handle and hose. Text at the top reads "FOR USE WITH" in white on a red background.
A person wearing gloves and a cap uses the M18™ 4-Gallon Backpack Sprayer w/ SWITCH TANK™ to spray along the side of a building. They are walking on a paved surface, and a work truck is parked nearby. The sprayer is white with red accents and a black frame.
A person wearing a gray cap and gloves uses a red and white Milwaukee backpack sprayer to water plants beside a house. The person stands on a lawn next to a beige and blue house with two windows.
A person wearing a grey shirt and cap uses an M18™ 4-Gallon Backpack Sprayer with SWITCH TANK™ to spray liquid onto tall shrubbery beside a green metal building. The sprayer is red and white with a hose extending to the nozzle in hand.
A close-up view of a 4-Gallon Sprayer Tank Assembly w/ SWITCH-TANK™. The image shows the top part of a white tank with a large black cap and a red handle attachment on the side. The handle has the Milwaukee logo on it.
This image shows a 4-Gallon Sprayer Tank Assembly w/ SWITCH-TANK™. The white, cylindrical tank features a perforated bottom section for fluid distribution. The tank is designed for use with a sprayer system.
SWITCH TANK™ 4-Gallon Concrete Sprayer Tank Assembly
The image features a black and white label stating "Tank Limited 1 Year Warranty" on a gray background. The text is centered in a rectangular border, with "Tank Limited" at the top, a large number "1" in the middle, and "Year Warranty" at the bottom.
49-16-19PS
New

4-Gallon Sprayer Tank Assembly w/ SWITCH-TANK™

Our 4-Gallon Sprayer Tank Assembly w/ SWITCH TANK™ is an interchangeable tank powered by the M18™ Powered Base w/ SWITCH TANK™ (not included). The sprayer tank assembly includes the pump, hose, and wand. The design allows you to add on tank assemblies for different applications, eliminating cross-chemical contamination. The 4-Gallon Sprayer Tank Assembly features a dual diaphragm pump for longer pump life and Viton® seals for increased durability against harsh chemicals. The sprayer tank also has a wide mouth opening for easier pouring and a strainer that filters debris from getting into the tank.

Includes

(1)
4-Gallon Sprayer Tank Assembly w/ SWITCH-TANK™ (49-16-19PS)
(1)
Backpack Sprayer Hose Handle and Wand Assembly (49-16-2804)
(1)
Sprayer Nozzles (49-16-2806)

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Key Features Specifications Reviews
  • Instant, Constant and Adjustable Pressure for Ultimate Control
  • Add-on Interchangeable Tank Assembly to Eliminate Cross-Chemical Contamination
  • Compatible with: M18™ Powered Base w/ SWITCH TANK (3019-20)
  • Critical seals: Viton® for increased durability against chemicals
  • Dual Diaphragm Pump: For Longer Pump Life
  • Wide Mouth Opening for Easier Pouring
  • High visibility markings for easy fill management
  • Tank identification stickers for easy tank identification
  • Easy access latches for quick tank swaps
  • Onboard measuring cup for easy access
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Download Operator’s Manual Download Service Parts List SWITCHTANK Cleaning Guide 2025

Product Specifications

Length 10.5 in
Weight 8 lb
Height 16.5 in
Width 15 in
Material Composition Plastic|Metal