I have the 4200 psi washer. Will this thing explode and cause a tsunami or can i just dial it down and bit an use it just fine?

Pressure gauge and pressure unloader knob to dial down the pressure it will work fine. If you only turn the engine speed down it may not be enough to drop the pressure low enough. Also the static pressure when you open the trigger may be quite large even though you are running less pressure when operating. For example I’ll dial down my bigger unit to 3200 psi delivering water but the gauge will read 5000+ psi when I close the gun and that has cracked the steel attachment pivot on two 10” surface units rated at 3200 when I opened the flow. You can’t open k lbs of pressure slowly.

what is the brush material, wire or softer? I need wire or very stiff bristles.

Very stiff bristles, but that really doesn't matter as it doesn't come into contact with the surface being cleaned. Its the 2 nozzles rotating that does the job.

Will this unit work with a 2800 psi Troy Bilt gas power washer?

I'm not sure about a 2800 PSI but mine is a 3750 PSI and it struggled to work and second day the nozzle broke off of it so I neither have to tap it to get it out wasn't worth the money for me

I am getting 4400 psi 4 Simpson power washer??? Can I use this with that????

Not recommended, the components of the surface cleaner are only rated to 3600 psi. You may want to look into Simpson's Surface Cleaner 80182 rated at 4500 psi.

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💥 Clean smarter, not harder — dominate your driveway with SIMPSON power!

MAINTENANCE MADE EASY - Included nozzle cleaning tool ensures peak performance and extends the life of your surface cleaner.
STAY DRY CLEAN SMART - Innovative shroud design minimizes overspray, keeping you and your surroundings dry and tidy during every job.
EFFORTLESS UNIVERSAL FIT - Quick-connect 1/4-inch fitting hooks up seamlessly to most spray wands—no hassle, just clean.
TURBOCHARGED CLEANING POWER - Two high-pressure rotating jets deliver streak-free results with 10X more surface coverage than standard nozzles.
BUILT TO LAST BUILT TO PROTECT - Durable powder-coated steel shroud and corrosion-resistant stainless steel nozzles keep your gear looking sharp and performing strong.

The SIMPSON Cold Water Pressure Washer Surface Scrubber features a universal 1/4-inch quick-connect fitting, dual rotating jets for 10X faster streak-free cleaning, and a durable powder-coated steel shroud with stainless steel nozzles. Designed for cold water use up to 140°F, it fits gas-powered washers from 2200 to 3700 PSI and includes a nozzle cleaning tool for easy maintenance.

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TrustScore 4.5 | 7,300+ reviews

Ayesha M.

The product exactly matches the description. Very satisfied with my purchase.

5 days ago

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The product quality is outstanding. Exactly what I needed for my work.

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Age Range	Adult
Color	Black
Style	Surface Scrubber
Material Type	Alloy Steel
Number of Items	1
Number of Pieces	1
Brand	SIMPSON
Manufacturer	SIMPSON
Item model number	80165
Product Dimensions	38.1 x 17.78 x 38.1 cm; 2.49 kg
ASIN	B07H5BJ3VR

SIMPSONCold Water Pressure Washers

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