Description
The Comet LWD3025G is a professional-grade triplex plunger pump designed for direct-drive gasoline engines. It is a popular “step-up” pump for those looking to move away from consumer-grade axial pumps toward a more durable, fully rebuildable triplex design.
Technical Specifications
| Feature | Specification |
| Flow Rate | 3.0 GPM |
| Max Pressure | 2500 PSI |
| Speed | 3400 RPM |
| Shaft Diameter | 3/4″ Hollow Shaft |
| Flange | Gas Engine Flange (Standard 4-Bolt) |
| Inlet Port | 1/2″ FPT (or Garden Hose Adapter) |
| Outlet Port | 3/8″ FPT |
Key Features
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Triplex Design Advantage: Unlike axial pumps, the LWD series uses a three-piston “crankshaft” design. This results in significantly less internal friction, a longer lifespan, and the ability to be fully serviced when seals or valves wear out.
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3/4″ Hollow Shaft: Specifically engineered to fit mid-sized gasoline engines, typically in the 5 HP to 6.5 HP range (such as the Honda GX160 or GX200).
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Solid Ceramic Plungers: These pistons are highly resistant to thermal shock and abrasion. Their ultra-smooth finish prevents the water seals from wearing down prematurely.
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Forged Brass Manifold: A rugged, corrosion-resistant head that handles high-pressure cycles reliably.
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Built-in Unloader: This model usually features an integrated unloader valve, which allows you to adjust the pressure and protects the pump when the spray gun trigger is released.
Performance Highlights
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Balanced Output: 3.0 GPM at 2500 PSI is widely considered the “sweet spot” for residential and light commercial work. It provides enough volume for effective rinsing while staying within the power limits of smaller, portable engines.
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Compact Footprint: Because it bolts directly to the engine, it maintains a small profile, making it ideal for portable, cart-mounted pressure washers.
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High-Speed Efficiency: Designed to run at 3400 RPM, matching the native speed of most gasoline engines without the need for a gearbox.
Ideal Applications
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Residential Contractors: Perfect for house washing, cleaning decks, and detailing vehicles.
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Property Maintenance: Ideal for light-duty sidewalk cleaning and maintaining apartment or condo complexes.
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DIY Enthusiasts: A high-quality upgrade for homeowners who want professional-level durability from their equipment.
Maintenance & Service Kits
To maintain the LWD3025G, keep these common service kits in mind:
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Water Seal Kit: 5019.0077.00
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Valve Kit: 5025.0014.00
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Oil Seal Kit: 5019.0079.00





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