Dewalt 190681 4 Gallon Lithium-ion Backpack Sprayer

Product Description

The DEWALT 190681 is a 4-gallon lithium-ion powered backpack sprayer designed for professional-grade spray applications without manual pumping. The battery-powered system maintains consistent pressure up to 90 psi, eliminating the fatigue and downtime associated with hand-pump models. A Variflo adjustable nozzle lets the operator dial in the spray pattern on the fly, and the reinforced hose and brass nozzle construction are built to hold up to repeated chemical exposure. A licensed or experienced trade applicator will find this unit suited to high-volume, time-sensitive jobs where steady output matters.

The 190681 is intended for applying cleaning solutions, sanitizing agents, fertilizers, weed killers, fungicides, insecticides, and water-based penetrating concrete sealers. The polyethylene tank and Viton seals are rated chemical safe, making this sprayer appropriate for the full range of those chemical types. It is well-suited for commercial cleaning contractors, pest control technicians, landscaping professionals, and concrete or masonry surface prep crews who need hands-free, consistent output over extended work sessions.

Key Features

• Lithium-ion powered operation eliminates manual pumping and maintains consistent pressure
• Maximum sprayer pressure of 90 psi for reliable, uninterrupted spray output
• Variflo technology allows on-the-fly nozzle adjustment across stream, cone, and foam patterns
• Chemical-safe polyethylene tank with Viton seals and gaskets for broad chemical compatibility
• Brass adjustable nozzle and polypropylene/stainless steel wand for chemical resistance and durability
• In-tank filter helps prevent nozzle clogs during operation
• Includes battery, charger, and adjustable nozzle in the box

Compatibility

Designed for use with cleaning, sanitizing, fertilizing, weed killing, fungicide, insecticide, and water-based penetrating concrete sealer applications. Consult the manufacturer documentation to confirm compatibility with specific chemical formulations before use.

Installation Notes

Charge the battery fully before first use using the included charger. Flush the tank and hose with clean water before loading any chemical solution and after each use to prevent residue buildup and seal degradation. Follow all chemical manufacturer safety guidelines, including appropriate PPE, when filling and operating the sprayer. Service and chemical handling should comply with applicable local regulations and safety codes for the chemical type being applied.