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Milwaukee 2820-21WS M18 Switch Tank 4 Gallon Backpack Water Supply Kit

Original price was: $526.00.Current price is: $64.80.

SKU: SBLH96359 Category:
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Description

The Milwaukee M18 Switch Tank 4 Gal. backpack water supply kit is the industrys first interchangeable tank design with no manual pumping. Designed to meet 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 adjustment knob adjusts the pressure between 20 to 60 psi for ultimate control. The 4 Gal. water supply tank assembly has 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 for 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. The interchangeable tank assembly includes the pump 10 ft hose and quick-connect. The isolated pump hose and quick-connect design allows tank assemblies to be added for different applications eliminating cross-chemical contamination. It also allows tank assemblies to be replaced 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 49-16-28CS and 4 Gal. sprayer 49-16-28PS 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. The kit also includes one M18 Redlithium XC3.0 battery and an M18/M12 multi-voltage charger.

  • Instant, Constant and Adjustable Pressure for Ultimate Control
  • Up to 60 PSI
  • 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 and handle for convenient transport and storage
  • Compatible with SWITCH TANK Concrete Sprayer and Pesticide Tank Assemblies

Reviews

★★★★★

"Picked the blue one and the cushioning is supportive after hours. It's been my go-to for morning coffee runs. Solid deal, no regrets."

Donna Bailey Donna Bailey Jul 12, 2026
★★★★★

"Ordered the limited edition and it feels sturdy in the hand. I've had it on the kitchen counter daily. I'm in Tucson, AZ. Pleasantly surprised."

Sandra Miller Sandra Miller Aug 2, 2026
★★★★★

"Got the white finish and the connectors click in securely. I keep it in the car for road trips. I'm in San Diego, CA. Definitely a repeat customer after this."

Heather Jones Heather Jones Jun 6, 2026
★★★★★

"The team was responsive when I reached out. It does exactly what it's supposed to do. Used it during a move and nothing shifted. Would recommend."

Carolyn Kim Carolyn Kim Aug 12, 2026
★★★★★

"Shipping was faster than I expected. Took it to the lake house for the weekend. Wish it came in more colors, otherwise great. I'm in Milwaukee, WI. Glad I went with this one."

Mary Gray Mary Gray Jul 12, 2026
★★★★☆

"Came earlier than the promised date. It does exactly what it's supposed to do. Took it on a road trip last weekend. Five stars from me."

Alexander Murphy Alexander Murphy Jun 21, 2026
★★★★★

"Order processed quicker than the estimate. Cushioning is supportive after hours. Carried it through a busy work week. Slightly heavier than expected, still well balanced though. I'm in Nashville, TN. Happy with my purchase."

Virginia Chen Virginia Chen Jul 21, 2026
★★★★★

"Ordered the 3-pack on sale and the grip is comfortable for long sessions. I've been using it daily for about two weeks now. Scent is lighter than I pictured, which I prefer anyway. Solid deal, no regrets."

Elizabeth Howard Elizabeth Howard May 7, 2026
★★★★★

"Got the navy version and the color matched the listing exactly. I use it in the garage most evenings. Worth the money."

Angela Adams Angela Adams May 5, 2026
★★★★★

"Ordered the limited edition and the material feels solid and well-made. Used it during a move and nothing shifted. One minor scuff on the corner, purely cosmetic. I'm in Sacramento, CA. Would buy again."

Jack Phillips Jack Phillips Aug 9, 2026

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