CHAPIN 61800 ProSeries 4-Gallon Backpack Sprayer, 3-Stage Filtration

The Chapin 61800 ProSeries 4-Gallon Backpack Sprayer is designed for homeowners and professionals tackling weed control, pest treatments, and general lawn care. Carrying liquid solutions across large yards can quickly lead to physical fatigue, but this unit spreads the 4-gallon load onto your back while providing targeted spray control for garden tasks.

Filling and maintenance are simplified thanks to a large 5.25-inch tank opening fitted with an internal filter basket. This wide mouth helps reduce accidental spills when pouring liquids, while the basket catches stray debris before it enters the tank. To keep your work moving smoothly, a 3-stage filtration system captures particulates at multiple points inside the sprayer to prevent unexpected clogs.

For spraying versatility, the unit includes three distinct nozzles: a brass adjustable nozzle, a poly adjustable nozzle, and a poly fan nozzle. These let you switch easily between focused streams and wide coverage patterns. Physical comfort is supported by padded shoulder straps and a cushioned shut-off handle, while the 20-inch wand and 48-inch reinforced hose allow you to reach deep into landscaping without overstretching.

Because this is a manual pump backpack sprayer, operation requires physical pumping during use. Assembly is also required before your first project, and users will need to consult the manual to ensure proper setup. The listing does not specify empty weight dimensions or chemical compatibility limits beyond standard weed, pest, and lawn treatments.

Verdict: The Chapin 61800 ProSeries is a solid, reliable choice for property owners and landscapers who want comfortable, multi-nozzle spray coverage with robust clog protection. It delivers dependable reach and versatility backed by a 1-year limited warranty and US-based technical support.

• Tank Capacity: 4 Gallons
• Tank Opening Size: 5.25 inches
• Wand Length: 20 inches
• Hose Length: 48 inches (reinforced)
• Filtration: 3-Stage system with filter basket
• Included Nozzles: Brass adjustable, poly adjustable, poly fan
• Country of Origin: Made in the USA with global materials
• Warranty: 1-year limited warranty

A great fit if you:

• Need a 4-gallon capacity sprayer for weed control, pest management, or lawn care.
• Want multiple nozzle options including brass and fan spray patterns.
• Prefer backpack carry with padded shoulder straps to reduce fatigue on larger properties.
• Value clog protection through multi-stage filtration.

Consider something else if you:

• Want an automated, battery-powered sprayer that eliminates manual pumping.
• Prefer a small, handheld canister for quick, indoor spot treatments.

What nozzles are included with this sprayer?
The sprayer comes with three nozzles: a brass adjustable nozzle, a poly adjustable nozzle, and a poly fan nozzle.

How does the filtration system prevent clogs?
It utilizes a 3-stage filtration system that captures debris at multiple points, starting with a built-in filter basket in the 5.25-inch tank opening.

What warranty and customer support are provided?
The sprayer is backed by Chapin's 1-year limited warranty and supported by a US-based customer service and technical support center reachable at 1-800-444-3140.

How long are the hose and spray wand?
It features a 20-inch wand connected to a 48-inch reinforced hose for extended reach around landscaping.