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M18™ 4-Gallon Backpack Sprayer With SWITCH TANK™, Tool Only
- Mfg.#
- 3019-20PS
- Sku#
- 4370011
- Instant, Constant and Adjustable Pressure for Ultimate Control
- Add-on Interchangeable Tank Assembly to Eliminate Cross-Chemical Contamination
- Adjustable padded harness with lumbar support and padded hip strap for added comfort
- Dual Diaphragm Pump: For Longer Pump Life
- Critical seals: Viton® for increased durability against chemicals
* Estimated stock levels as of Thu, Apr 2, 2026. All items subject to prior sale. Prices may vary between stores and online. Please call ahead to confirm availability of items marked as Limited Stock.
Description
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. 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.
Specifications
General
| Bare Tool/Kit | Tool Only |
|---|---|
| Batteries Required | Battery Not Included |
| Battery System | M18™ |
| Capacity | 4 gal |
| Includes | (1) 4-Gallon Sprayer Tank Assembly with SWITCH-TANK™, (1) Backpack Sprayer Hose Handle and Wand Assembly |
| Maximum Pressure | 140 psi |
| Motor | Brushed |
| Number of Settings | 5 Pressure Settings |
| Spray Range | 24 ft Vertical Spray Distance |
| Tank Capacity | 4 gal |
| Type | Backpack Sprayer |
Dimensions
| Weight | 17.4 lb |
|---|
Manufacturing Details
The following information is subject to change without notice
| Manufacturer Warranty | 3 Year Base, 1 Year Tank |
|---|---|
| Shop USA | No |
Related Documents
Brochure (PDF)
