Milwaukee 2820-20PS M18 18V 4 Gallon Switch Tank Backpack Sprayer, Bare Tool

Original price was: $300.00.Current price is: $64.32.

SKU: VXZY75847 Category:
Description

The Milwaukee M18 SWITCH TANK 4 Gallon backpack sprayer 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 delivers 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 ÿ 120 PSI for a wide range of applications. The M18 REDLITHIUM XC3.0 battery (sold separately) provides up to 12 tanks of spraying per charge. The sprayer has 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 has wide straps for added comfort during extended spraying applications and a handle for convenient transport and storage. The 4 Gallon sprayer is made up of two components ÿ the M18 SWITCH TANK powered base and the SWITCH TANK 4 Gallon sprayer tank assembly. The powered base includes the motor, battery compartment, and REDLINK electronics. The interchangeable tank assembly includes the pump, hose, and wand. The isolated pump, hose, and wand design allow different tank assemblies to be added for different spraying applications, eliminating cross-chemical contamination. It also allows the tank assembly to be replaced at a lower cost of ownership compared to replacing the entire sprayer. The powered base is compatible with the SWITCH TANK 4 Gallon concrete sprayer (49-16-28CS) and 4 Gallon water supply (49-16-28WS) tank assemblies. The M18 SWITCH TANK 4 Gallon backpack sprayer is part of the M18 system which is fully compatible with over 175 tools.

  • Delivers constant and instant spray with no manual pumping
  • Viton seals in tank assembly protect against harsh chemicals
  • Wide tank opening with strainer aids in pours and keeps debris out
  • Backpack frame features wide, padded straps for comfort during longer jobs
  • Sprays up to 12 tanks per charge when using a REDLITHIUM XC 3 Ah Lithium-Ion battery pack
Shipping & Delivery

Reviews

★★★★★

"Got the travel size and the zipper glides without catching. Took it on a road trip last weekend. Couldn't ask for more at this price."

Robert Nguyen Robert Nguyen Jul 28, 2026
★★★★☆

"Ordered the black colorway and the finish is clean with no rough edges. Brought it to a tailgate and it performed. Color is slightly darker than the listing photo but I actually like it. Customer service was helpful when I had a question."

Rebecca Bailey Rebecca Bailey Jul 4, 2026
★★★★☆

"Picked the red option and it fits true to size with no surprises. Running it through my routine for a month. Glad I went with this one."

Stephen Cruz Stephen Cruz May 25, 2026
★★★★★

"Bought the bundle deal and the zipper glides without catching. Tested it through a full week of rain. No complaints so far."

Patrick Torres Patrick Torres Jun 5, 2026
★★★★★

"Packaging was secure and nothing moved. Sound is clear without any static. Carried it through a busy work week. I'm in San Diego, CA. No complaints so far."

Rebecca Murphy Rebecca Murphy Jun 11, 2026
★★★★☆

"Picked the gray model and the color matched the listing exactly. Used it at the desk for video calls all month. Glad I went with this one."

Howard Nguyen Howard Nguyen Jun 5, 2026
★★★★★

"The team was responsive when I reached out. Used it during a move and nothing shifted. I'm in Boston, MA. Would recommend."

David Brown David Brown Jun 22, 2026
★★★☆☆

"Got the navy version and the cushioning is supportive after hours. Used it on my commute all month. Worth the money."

Benjamin Ramirez Benjamin Ramirez Jul 22, 2026
★★★★★

"Ordered the refurbished unit and the screen is sharp and bright in daylight. I've been using it daily for about two weeks now. Runs a touch small but nothing a size up didn't fix. Exactly what I needed."

Deborah Allen Deborah Allen Jun 25, 2026
★★★★★

"Went with the XL and the compartments keep everything organized. I keep it in the car for road trips. Runs a touch small but nothing a size up didn't fix. Happy with my purchase."

Howard Perez Howard Perez Jul 27, 2026