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Milwaukee Electric - M18 4-Gallon Backpack Sprayer with Switch Tank

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$399.00 Why this price?

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Features

  • Dual Diaphragm Pump Extends pump life and improves chemical resistance.
  • No Manual Pumping Battery-powered operation eliminates fatigue and ensures consistent spray output.
  • Viton Seals Withstand harsh chemicals for long-term durability.
  • Comfort-Focused Backpack Frame Includes padded straps, lumbar support, and hip belt for extended wear.
  • Wide Mouth Opening with Strainer Simplifies filling and prevents debris from entering the tank.

Description

This sprayer is part of Milwaukee’s SWITCH TANK™ system, featuring a powered base and interchangeable tank assemblies to eliminate cross-chemical contamination. It delivers instant, constant, and adjustable pressure up to 140 PSI, with a 5-mode flow rate knob for precise control across a wide range of applications.

Brand: Milwaukee


Tank Volume: 4 Gallons


Color: Red


Recommended Uses For Product: Garden sprayer, Vehicle Washing


Material: Plastic, Metal, Nylon, Viton


Brand Name: Milwaukee


Recommended Uses For Product: Garden sprayer, Vehicle Washing


Included Components: Milwaukee Electric - M18 4-GALLON BACKPACK SPRAYER


Model Name: 3019-20PS


Model Number: 3019-20PS


Manufacturer Warranty Description: Manufacturer Warranty


UPC: 045242250035


Manufacturer Part Number: 3019-20PS


Item Type Name: Milwaukee Electric - M18 4-GALLON BACKPACK SPRAYER WITH SWITCH TANK


Manufacturer: Milwaukee Electric


Unit Count: 1.0 Count


Tank Volume: 4 Gallons


Item Dimensions W x H: 13"W x 23"H


Color: Red


Power Source: Battery Powered


Maximum Pressure: 140 Pound per Square Inch


Material Type: Plastic, Metal, Nylon, Viton


Frequently asked questions

This product is currently out of stock. Please check back later for shipping info.

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
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  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Flow
Works much better than expected, strong even flow, I’m 65, wish I could do as well.
Reviewed in the United States on March 21, 2026 by Paul J. Gunis

  • Good product, small issues
Overall has been ok for pure water based product. Any grit/lumps at all such as an organic weed solution causes clogs in filter that are very challenging to clear.
Reviewed in the United States on May 13, 2026 by RO

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