What is the maximum gpm ?

It's is rated at 3gpm max flow so you'll be good there, I assume the minimum flow to run this machine would be around 2gpm. So if you're running 3.5gpm at the gun with at least 3k psi you'll should be right in the sweet spot for this machine although it may be somewhat large for your machine at 20inches you may want to walk a little slower to mitigate tiger stripes. General rule for surface cleaners is 4 inches per gpm and that would put you around the 15/16inch mark for maximum efficiency for your machine. Hope this helps🤘🏾

Suggested psi for driveways and flatwork is 2,000-2,500 psi that is controlled through the tips. Do the tips with this output that psi?

use mines on a 3000 and a 3600 , works great on both PSI. gets the job done

Does this connect directly to a Simpson 3200?

No, you will have to purchase the connectors.

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MEKOH Pressure Washer Surface Cleaner 20'', 4500PSI Power Washer Surface Cleaner Attachment with Wheels, Pressure Washer Accessory for Driveway Sidewalk Curb Deck Patio Cleaning, 3/8'' Quick-Connect

MEKOH Pressure Washer Surface Cleaner 20'', 4500PSI Power Washer Surface Cleaner Attachment with Wheels, Pressure Washer Accessory for Driveway Sidewalk Curb Deck Patio Cleaning, 3/8'' Quick-Connect

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Product ID: 465853289

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Details

Brand
MEKOH
Power Source
manual
Color
Serenity
Maximum Pressure
4500 Pound per
Item Weight
7.86 Kilograms
Hose Length
63 Inches

🌀20'' dual spinning nozzles

💨4500 PSI max pressure

⚙️4 GPM water flow rate

Description

🚀 Power through grime with pro-level speed and precision!

ECO SMART EFFICIENCY - Maximizes water use with 4 GPM flow, saving water and cutting your utility bills.
BLAZING FAST CLEANUPS - Two high-speed spinning nozzles deliver 8x faster cleaning, slashing your outdoor chore time.
BUILT TO LAST PERFORM - Heavy-duty PP, brass, and sealed bearings resist heat, chemicals, and leaks for long-term reliability.
EFFORTLESS GLIDE CONTROL - Dual handles plus 4 universal wheels ensure smooth, ergonomic operation without strain.
VERSATILE FLOOR FRIENDLY - Safe on concrete, wood, tile, and brick—protect your surfaces while blasting away grime.

The MEKOH 20'' Pressure Washer Surface Cleaner is a professional-grade attachment designed for high-efficiency outdoor cleaning. Featuring dual high-pressure nozzles spinning at high speed, it delivers up to 4500 PSI and 4 GPM flow to clean large surfaces 8x faster than standard tools. Its lightweight yet durable construction with sealed bearings and brass fittings ensures long-lasting performance and leak prevention. Ergonomically designed with dual handles and 4 wheels, it glides smoothly over driveways, patios, decks, and sidewalks, protecting floors while saving water and effort.

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MEKOH Pressure Washer Surface Cleaner 20'', 4500PSI Power Washer Surface Cleaner Attachment with Wheels, Pressure Washer Accessory for Driveway Sidewalk Curb Deck Patio Cleaning, 3/8'' Quick-Connect

Details

Description

Specifications

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Maximum Pressure	4500 Pound per Square Inch
Maximum Flow Rate	4 Gallons Per Minute
Power Source	manual
Hose Length	63 Inches
Item Dimensions L x W x H	20"L x 20"W x 65"H
Item Weight	7.86 Kilograms
Color	Serenity