Milwaukee 2820-21PS M18 4 Gal. Switch Tank Backpack Pesticide Sprayer Kit

  • $ 427.47

The Milwaukee M18 SWITCH TANK 4 Gal. Backpack Sprayer kit delivers the industry’s first interchangeable tank design with no manual pumping. Designed to meet the needs of professional landscape maintenance, the battery-powered backpack sprayer provides users with instant, constant and adjustable pressure up to 120 psi and a 25 ft. spray distance. The 5-mode pressure adjustment knob adjusts the pressure between 20 psi - 120 psi, providing users with the capability to complete a wide range of applications. The M18 REDLITHIUM XC3.0 Battery provides users with up to 12 tanks of spraying per charge. The 4 Gal. Sprayer Tank Assembly features a dual diaphragm pump for longer pump life and Viton seals for increased durability against harsh chemicals. The sprayer tank has a wide mouth opening for easier pouring and a strainer that filters debris from getting into the tank. The backpack frame includes wide straps providing users with added comfort during extended spraying applications and a handle for convenient transport and storage. The 4 Gal. Sprayer is made up of 2 components – the M18 SWITCH TANK Powered Base and the SWITCH TANK 4 Gal. Sprayer Tank Assembly. The Powered Base includes the motor, battery compartment and REDLINK electronics, while the interchangeable Tank Assembly includes the pump, hose and wand.

  • Instant, constant and adjustable pressure for ultimate control
  • Up to 120 psi and 25 ft. spray distance
  • Run-time: up to 12 tanks per charge with M18 REDLITHIUM XC3.0 battery
  • Critical seals: Viton for increased durability against chemicals
  • Dual diaphragm pump: for longer pump life
  • Wide mouth opening and strainer: for easier, debris free pouring
  • Wide straps for comfort during extended duty cycles
  • Transport handle for convenient transport and storage


  • 2820-20, M18 SWITCH TANK powered base
  • 49-16-28PS, SWITCH TANK 4 Gal. sprayer tank assembly
  • stainless steel wand
  • adjustable nozzle
  • fan nozzle
  • angled nozzle adaptor
  • M18 REDLITHIUM XC3.0 battery
  • M18/M12 multi-voltage charger

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