SKU: 0333211 UPC: 045242526963 Categories: HAND/POWER TOOLS, CORDLESS TOOLS




The M18™ SWITCH TANK™ 4 gal backpack water supply kit delivers the industry’s first interchangeable tank design with no manual pumping. 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 to 60 psi for ultimate control. The M18™ REDLITHIUM™ XC3.0 battery provides you with up to 12 tanks of water delivery per charge. The 4 gal water supply tank features a dual diaphragm pump for increased durability and longer pump life. The tank also 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. The 4 gal water supply is made up of two components the M18™ SWITCH TANK™ powered base and the SWITCH TANK™ 4 gal water supply tank assembly. The powered base includes the motor, battery compartment and REDLINK™ electronics, while the interchangeable tank assembly includes the pump, 10 ft 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 gal concrete sprayer and 4 gal sprayer tank assemblies. The M18™ SWITCH TANK™ 4 gal backpack water supply is part of the M18™ system which is fully compatible with over 175 tools. In addition to the backpack water supply. The 4 gal concrete sprayer is made up of two components-the M18™ SWITCH TANK™ powered base and the SWITCH TANK™ 4 gal concrete sprayer tank assembly.


Descripción español:



Milwaukee M18 SWITCH TANK 2820-21WS Backpack Water Supply Kit, 4 gal Tank, HDPE Tank, 25 ft Spray Range, 10 ft L Hose

Product Details

Adjustable Spray Tip:
Connection Type:
Quick Connect
Fill Opening Size:
4-1/2 in
Hose Length:
10 ft
Hose Material:
(1) 49-16-28WS SWITCH TANK 4 gal Water Supply Tank Assembly (1) 48-11-1828 M18 REDLITHIUM XC Extended Capacity Battery (1) 48-59-1812 M18 and M12 Multi-Voltage Charger (1) 10 ft Hose with Quick-Connect and (1) Water Spray Nozzle with Quick-Connect
Nozzle Type:
Cone Fan
Pressure Rating:
20 to 60 psi
Spray Range:
25 ft
Tank Capacity:
4 gal
Tank Material:
Wand Length:
24 in
Wand Material:
Stainless Steel


  • Interchangeable tanks, no manual pumping
  • Up to 12 tanks per charge
  • Add-on, replace and interchange SWITCH TANK™ concrete sprayers and water supply tanks
  • Instant, constant and adjustable pressure for ultimate control
  • Run-time up to 12 tanks per charge with M18™ REDLITHIUM™ XC3.0 battery
  • OSHA table 1 compliant when concrete cutting and coring
  • Wide mouth opening for easier pouring
  • Strainer to filter debris
  • Wide straps and handle for convenient transport and storage

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Additional information

Weight 25.5200 lbs
Dimensions 12.20000 × 13.78000 × 26.77000 in


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