Description

The Comet ZWD4040G-K is an industrial-grade, direct-drive triplex plunger pump engineered for high-performance gasoline engines. Delivering a powerful 4000 PSI, this pump is a favorite for heavy-duty commercial cleaning, offering a “bolt-on” solution that includes a built-in unloader for immediate operation.

Technical Specifications

Key Features

• Direct Drive 1″ Hollow Shaft: Designed for seamless mounting onto large-displacement gasoline engines (typically 11HP to 15HP), such as the Honda GX390 or equivalent.

• Integrated Unloader Valve: The factory-installed unloader allows for easy pressure adjustment and bypasses water flow when the trigger is released, protecting the system from over-pressurization.

• High-Strength Forged Brass Manifold: Built to withstand the rigors of 4000 PSI operation while providing excellent resistance to corrosion and chemical wear.

• Solid Ceramic Plungers: Professional-grade ceramic pistons offer superior heat dissipation and extreme durability against abrasion, significantly extending seal life.

• Dual Oil Sight Glasses: Features clear windows to monitor oil level and quality, ensuring the internal crankcase components stay properly lubricated.

Construction Highlights

• Heavy-Duty Crankcase: Die-cast aluminum alloy chassis with cooling fins to keep internal temperatures low during extended use.

• One-Piece Bronze Connecting Rods: Enhanced internal metallurgy provides superior strength for the high-torque demands of a 4.0 GPM output.

• Stainless Steel Valves: High-efficiency check valves ensure consistent suction and pressure delivery without cavitation.

Ideal Applications

This pump is built for “contractor-grade” tasks that require maximum stripping power:

• Industrial Surface Cleaning: Pairs perfectly with 20″–24″ flat surface cleaners for large parking lots or warehouses.

• Graffiti & Paint Removal: Provides the high-impact pressure needed to blast away stubborn coatings.

• Heavy Equipment Maintenance: Cleans caked-on mud and grease from construction and agricultural machinery.