SKU: 37387876432

Milwaukee M18™ 4-Gallon Backpack Sprayer w/ SWITCH TANK™ (Tool Only)

Sale price$220.95 Regular price$245.50
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Ships within 48 hours · Estimated delivery Aug 7 - Aug 12

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Description

Milwaukee M18™ 4-Gallon Backpack Sprayer w/ SWITCH TANK™ (Tool Only)Product Overview Our M18 4 Gallon Backpack Sprayer w SWITCH TANK delivers the industry's best pressure control with no manual pumping and an interchangeable tank design. Designed to meet the needs of professional landscape maintenance, the battery powered backpack sprayer provides instant, constant, and adjustable pressure up to 140 PSI and a 24 ft vertical spray distance. The 5 mode flow rate knob adjusts the flow by 0. 1 0. 52 GPM, giving you the

Product Overview

Our M18™ 4-Gallon Backpack Sprayer w/ SWITCH TANK™ delivers the industry's best pressure control with no manual pumping and an interchangeable tank design. Designed to meet the needs of professional landscape maintenance, the battery-powered backpack sprayer provides instant, constant, and adjustable pressure up to 140 PSI and a 24 ft vertical spray distance. The 5-mode flow rate knob adjusts the flow by 0.1 – 0.52 GPM, giving you the capability to complete a wide range of applications. Our M18™ REDLITHIUM™ XC4.0 Battery (sold separately) provides you with up to 20 tanks of spraying per charge (on Mode 3). The 4-Gallon 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 an optimized design for better weight distribution, a wide mouth opening for easier pouring, and a strainer that filters debris from getting into the tank. The backpack frame includes padded straps, lumbar support, and a hip belt, giving you added comfort during extended spraying applications. The 4-Gallon Sprayer is made up of two components – the M18™ Powered Base and the 4-Gallon 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. The isolated pump, hose, and wand design allows you to add on tank assemblies for different spraying applications, eliminating cross-chemical contamination. The Powered Base is compatible with the 4-Gallon Water Supply Tank Assembly (49-16-19WS). Our M18™ 4-Gallon Backpack Sprayer w/ SWITCH TANK™ is part of the M18™ system, which is fully compatible with over 275 tools.


  • Instant, Constant and Adjustable Pressure for Ultimate Control

  • Add-on Interchangeable Tank Assembly to Eliminate Cross-Chemical Contamination

  • Run-time: Up to 20 tanks per charge with M18™ REDLITHIUM™ XC4.0 Battery on Mode 3

  • Adjustable padded harness with lumbar support and padded hip strap for added comfort

  • Optimized design for better weight distribution

  • Dual Diaphragm Pump: For Longer Pump Life

  • Critical seals: Viton® for increased durability against chemicals

  • Wide Mouth Opening for Easier Pouring

  • High visibility tank markings for easy fill management

  • Tank identification stickers for easy tank identification

  • Easy access latches for quick battery and tank swaps

  • Compatible Tank Assemblies: 4-Gallon Water Supply (49-16-19WS) & 4-Gallon Backpack Sprayer (49-16-19PS)


In The Box
(1) 4-Gallon Sprayer Tank Assembly w/ SWITCH-TANK™
(1) Backpack Sprayer Hose Handle and Wand Assembly


Specs

Battery System
M18™


Tank Capacity
4 gal


SWITCHTANK™ Compatible
Yes


Number Of Pressure Settings
5


Vertical Spray Distance
24 ft


Maximum Pressure
140 psi


Weight
17.4 lb


Motor Type
Brushed


Warranty
3 Year Base, 1 Year Tank

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 37387876432

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4.3 ★★★★★
Based on 14 reviews
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Product Reviews
J
Verified Purchase
Jennifer L Kasanke
Battle Creek, US
★★★★★ 5
Holds up! Good thrower!
Good quality! Throws far! Love this brand!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 10, 2026
M
Verified Purchase
Michael
Fort Morgan, US
★★★★★ 4
Almost Perfect
If you’ve ever seen these things, the foldable ones are just as good as the standard ones. I just wish when you folded it up there was a way to lock it into that position. When you unfold it to play, you lock it into place with the orange locking slide so it doesn’t fold up on you. But when you’re done playing and fold it up, there’s no way to lock it into that position, it can keep unfolding if you carry it around with you, plus the orange locking slide keeps sliding up and down. It’s not a huge deal, but they could’ve made it better.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 29, 2026
S
Verified Purchase
SC
Dallas, US
★★★★★ 5
Helpful
I’ve used Chuckit ball launchers, this one is foldable, great for my back pack when camping with my dog
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 27, 2026
L
Verified Purchase
LRBuyer
Lexington, US
★★★★★ 5
Great product
Style: Sport, Size: Large
This is a lifesaver. My lab will chase the ball all day and this saves the arms and shoulders. A little bit of a learning curve to use but I would definitely recommend
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Reviewed in the United States on May 24, 2026
J
Verified Purchase
Jamie
Pawtucket, US
★★★★★ 5
Labs love this!!!
Style: Sport, Size: Large
Our Lab LOVES everything about this thing! Recommend getting extra durable balls as the 1 included fell apart in 1 hour. I have a very energetic Lab retriever that we have to force to stop playing ball so he does not overheat. That & the force with which you can throw this ball did not help keeping it from splitting it in 2 in less than 1 hour. This is worth the money for the extra throwing power & distance but do invest in the ULTRA strong ball for dogs like retrievers! Also, be sure to order the correct SIZE OF BALL, specific to each different size of throwing wand. My fav thing about this item is #1 the joy my dog gets from the new challenge of racing to catch longer throws, & #2 I don't have to get my hands covered in dog slobber!! He has gotten to where he can almost put it in the cup himself so I won't waste time throwing the ball again! Man, I love that dog!!! ❤️
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 1, 2023

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