The Stanley FatMax® SXPW3425 is a gas-powered pressure washer offering a maximum water pressure of 3400 PSI and flow of 2.5 GPM. (Read full specs)
Zoom on the Stanley SXPW3425
In summary, the Stanley SXPW3425 is a heavy duty, commercial pressure washer, that offers an all-around versatile cleaning experience, and also:
- spot cleaning of hard, paint-free surfaces and out-of-reach areas
- thorough cleaning of hard, paint-free surfaces
- cleaning of painted and frail surfaces
- applying detergent and cleaning solutions
Powered by a powerful 208 cc engine, its axial cam pump can deliver a pressure of 3400 PSI (around 57 times more than a standard garden hose) and a flow of up to 2.5 GPM (values claimed by the manufacturer). Combined, these values mean that the Stanley SXPW3425 has a cleaning power of 8500 Cleaning Units.
This gas-powered pressure washer’s Kohler engine is started by a traditional pull-start mechanism.
A fuel tank with a maximum capacity of 0.26 gallon is used to store gasoline.
Design & Handling
The wheelbarrow design of the Stanley SXPW3425 grants mobility and stability to the unit. Its sturdy steel frame provides longevity to the assembly. The handle adds to the SXPW3425 convenience of transport.
The majority of users will be able to maneuver this unit easily, it only weighs 67 lbs. One of the largest contributors to its weight are its 208 cc Kohler engine and its steel frame. Since the SXPW3425 has a set of two 12" never-flat wheels, it is still easily maneuvered and manipulated.
Along with the Stanley SXPW3425 itself, the package also includes a spray gun, a wand, a pressure hose, 5 nozzles and a detergent injection feature, which are discussed in further detail below.
- Soap injection: While the device doesn't feature a soap tank, detergent supply is ensured by a siphon hose. The detergent will be added automatically to the water when a soap nozzle is attached.
- Pressure hose: The included 35 ft ⌀5/16" high-pressure hose can be neatly stored on the unit when idle thanks to a set of convenient hooks.
- Spray gun and wand: A side hook allows for an easy storage of the included classic ergonomic spray gun and its wand.
- Nozzles: The 5 nozzles included with the device, and the respective surfaces which they’re the most suitable for, are shown in the following table.
|Concrete, brick, masonry||Use with caution||Suitable||Suitable||Suitable||Suitable|
|Siding, gutters, house||Not recommended||Use with caution||Use with caution||Suitable||Suitable|
|Fencing, deck, patio||Not recommended||Use with caution||Use with caution||Suitable||Suitable|
|Lawn equipment, boat, RV||Not recommended||Use with caution||Use with caution||Use with caution||Suitable|
Note: The shape of the nozzles above is for illustration purposes only and may differ.
Red cross: Not recommended. Green check: Suitable. Orange check: Use with caution.
- Onboard storage: With the Stanley SXPW3425's handy storage area, you’ll always have all the necessary nozzles and accessories at hand and thus, you’ll be fully prepared for any job.
- Pressure control: Water pressure can be manually changed, using the adjustable throttle of the trigger gun.
- Safety: Safety of operation is enhanced by a trigger lock mechanism (which prevents accidental operation) and a thermal relief valve (which helps to prevent internal pump damage).
- Accessories: Besides the usual owner's manual (opens in a new tab) and documentation to get you promptly started, the Stanley SXPW3425 comes with nozzle cleaner, wand, spray gun and pressure hose.
- Emissions: The Stanley SXPW3425 is NOT CARB-compliant. Thus, it cannot be purchased or sold in California.
The Stanley SXPW3425's performance versus other pressure washers
The following charts are provided to give you an idea of how the key specs of the Stanley SXPW3425 compare to similarly priced pressure washers.
- The Stanley SXPW3425, with a max water pressure of 3400 PSI, has one of the highest PSI values of the gas-powered products in the $300-400 price range.
- Considering its water flow, this washer, with a GPM (gallons per minute) of 2.5 is in the average compared to other devices in its price range. If maximum rinsing efficiency is your top priority, one of the devices with the highest water flow in the same price range is the Lifan LFQ3370, with a GPM of 3.
- With a rather impressive value of 8500 Cleaning Units (PSI x GPM), the SXPW3425 has a higher cleaning efficiency compared to similarly priced devices. If you consider the highest overall cleaning power as a really important factor, the Lifan LFQ3370 and its 9900 Cleaning Units has one of the highest cleaning efficiency of all the similarly priced units.
As you can see from this interactive chart, when compared to other gas-powered washers between 8000 and 8500 Cleaning Units, the Stanley SXPW3425 is on the average side of the price range.
Therefore, this pressure washer nicely fits in the expected budget for this kind of cleaning power.
Features and Specifications
|Water||Cold (90°F max.)|
|Engine||208 cc Kohler 4-stroke OHV|
|Pump||OEM Technologies™ Axial Cam|
|Soap injection||Via siphon hose|
|Nozzles||0°, 15°, 25°, 40°, Soap|
|Quick connect nozzles||Yes|
|Hose||35 ft, ⌀5/16|
(L x W x H)
|Approx. 33.3 x 18.3 x 19.8 in|
|Wheels||2 wheels, ⌀12", never flat|
|Included accessories||Nozzle cleaner, wand, spray gun, high pressure hose, 5 nozzles|
|Security||Trigger lock and thermal relief valve|
Unlike many websites, we did our best to research each of the specs above. That being said, we are not immune to making the occasional mistake or omission. Should you notice any missing or incorrect values, don't hesitate to suggest improvements so we can address the issue.
Founded in 1843 by Frederick Stanley in New Britain, Connecticut, Stanley has become one of the most famous names in hand tools worldwide. The Stanley Works company merged with Black & Decker in March 2010 to form Stanley Black & Decker. Building on its reputation for the quality and reliability of its manual hand tools, the company has also branched out into electric tools and outdoor power equipment, such as pressure washers and wet-dry vacuums. By using technology and innovation, the company is committed to the continued production of quality products in an environmentally sustainable way.
The Stanley SXPW3425 is covered under a warranty for up to 5 years. This warranty may be limited and may not cover all parts of the unit.
For more information about the warranty of Stanley pressure washers, please contact the Stanley Customer Support: 1-877-362-4271.