Milwaukee 2820-21WS Switch Tank Backpack Water Supply Kit

Milwaukee 2820-21WS Switch Tank Backpack Water Supply Kit
Write a review
This backpack water supply kit delivers the industry's first interchangeable tank design with no manual pumping. The battery provides you with up to 12 tanks of water delivery per charge.
SKU: 43101658
MFG: 2820-21WS
Shop more products by Milwaukee.

In Stock
Request a Bulk Quote

Thank you for your quote request. We will be in touch.




  • Size: 4 Gallon
  • Battery System: M18
  • Designed to meet your water supply needs for concrete cutting and coring, the battery powered water supply delivers instant, constant and adjustable pressure up to 60 PSI
  • The 5-mode pressure regulator adjustment knob adjusts the pressure between 20 - 60 PSI for ultimate control
  • The 4 gallon water supply tank features a dual diaphragm pump for increased durability and longer pump life
  • 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 and a handle providing you with convenient transportation and storage
  • Made up of two components; the M18 Switch Tank powered base and the Switch Tank 4-gallon water supply tank assembly
  • The powered base includes the motor, battery compartment and RedLink electronics, while the interchangeable Tank assembly includes the pump, 10' hose and quick-connect
  • The isolated pump, hose and quick-connect design allows you to add on tank assemblies for different applications, eliminating cross-chemical contamination
  • It also provides you with the ability to replace the tank assembly at a lower cost of ownership compared to replacing the entire water supply
  • The Powered Base is also compatible with the Switch Tank 4 gallon concrete sprayer (49-16-28CS) and 4 gallon sprayer (49-16-28PS) tank assemblies


  • (1) Backpack water supply
  • (1) M18 RedLithium XC3.0 battery
  • (1) M18/M12 multi-voltage charger


MFR: 2820-21WS
SKU: 43101658
UPC: 045242526963
Brand: Milwaukee