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Cat Pumps

4DNX25GSI Cat Pressure Washer Triplex Positive Displacement Plunger Pump 3000 PSI 2.5 GPM , 4DNX Series , 3/4 inch Hollow Shaft Diameter , SAE J609 Gas Engine Flange , Block-Style Brass

4DNX25GSI Cat Pressure Washer Triplex Positive Displacement Plunger Pump 3000 PSI 2.5 GPM , 4DNX Series , 3/4 inch Hollow Shaft Diameter , SAE J609 Gas Engine Flange , Block-Style Brass

Regular price $583.45 USD
Regular price Sale price $583.45 USD
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4DNX25GSI Cat Pressure Washer Triplex Positive Displacement Plunger Pump 3000 PSI 2.5 GPM , 4DNX Series , 3/4 inch Hollow Shaft Diameter , SAE J609 Gas Engine Flange , Block-Style Brass

 

CAT Pumps 4DNX25GSI 4DNX-Series Plunger Pump

 

The CAT Pumps 4DNX25GSI is a highly durable, industrial-duty direct-drive triplex plunger pump belonging to the reliable 4DNX Series. Engineered specifically for high-pressure fluid transfer, this positive displacement pump features a robust brass manifold paired with 304 stainless steel stacked valve assemblies. This high-strength construction provides exceptional structural integrity and wear resistance, making it an optimal choice for rigorous, intermittent-duty applications such as mobile commercial cleaning and gasoline-engine driven pressure washing systems.

Designed to maximize operational efficiency and minimize installation complexity, the 4DNX25GSI operates at a consistent flow rate of 2.5 GPM with a maximum pressure capacity of 3000 PSI at 3450 RPM. It utilizes advanced solid ceramic plungers that provide a true, low-friction wear surface, significantly extending the life of the standard NBR (Buna-N) seals and O-rings. The pump features an ultra-compact, 3/4-inch hollow shaft configuration designed to bolt directly to a standard gas engine flange, eliminating the need for external belts or pulleys. Equipped with an integral pressure regulating unloader, a built-in bypass, and a fixed chemical injector, this pump delivers the precise system control and continuous power required for high-demand surface cleaning.

 

SPECIFICATION DETAILS
Model Number 4DNX25GSI
Manufacturer CAT Pumps
Pump Type Triplex Plunger Pump
Manifold Material Brass
Valve Material 304 Stainless Steel
Max Flow Rate 2.5 GPM (9.5 LPM)
Pressure Range 100 - 3000 PSI
Test Pressure 3000 PSI
Max Pump Speed 3450 RPM
Inlet Port Size 3/4" GH(F)
Discharge Port Size 3/8" NPT(M)
Shaft Diameter 3/4" (19.0 mm) Hollow - Gas
Max Liquid Temp (NBR) 140°F (60°C)

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