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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SIMPSON Cold Water Pressure Washers

Product ID: 322261404

Details

Brand
SIMPSON
Colour
Black
Item weight
5.5 Pounds
Power source
manual
Specification met
CE

💨Two high-pressure rotating jets

⚙️15-inch diameter for 10X coverage

🛡️Powder-coated steel shroud resists corrosion

2819 Br

Duties & taxes included

In stock

Sold byAmazon BelarusDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

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

BUILT TO LAST - Durable powder-coated steel and stainless steel nozzles ensure corrosion resistance and long-term reliability.
PRECISION POWER JETS - Dual rotating jets deliver streak-free results with consistent high pressure up to 3700 PSI.
STAY DRY CLEAN SMART - Innovative shroud design minimizes overspray, keeping you and your surroundings dry and tidy.
EFFORTLESS MAINTENANCE - Includes a nozzle cleaning tool to maintain peak performance and extend the life of your surface cleaner.
MAXIMIZE CLEANING EFFICIENCY - Covers 10X more surface area than standard nozzles, speeding up your outdoor cleanup.

The SIMPSON Cold Water Pressure Washer Surface Cleaner features a 15-inch diameter with dual high-pressure rotating jets, delivering 10X more coverage than standard nozzles for fast, streak-free cleaning. Built with powder-coated steel and stainless steel nozzles, it resists corrosion and overspray, keeping users and surroundings dry. Compatible with gas-powered cold water pressure washers from 3000 to 3700 PSI and up to 3.4 GPM, it includes a nozzle cleaning tool for easy maintenance and long-lasting performance.

Specifications

ASIN	B07H5BJ3VR
Brand Name	SIMPSON
Color	Black
Customer Reviews	4.1 4.1 out of 5 stars (5,369)
Global Trade Identification Number	00879399001772
Item Type Name	15" Steel Pressure Washer Surface Cleaner for Cold Water Machines, 1/4" Quick Connection, Recommended Min 3000 PSI up to Max of 3700 PSI
Item Weight	5.5 Pounds
Manufacturer	SIMPSON
Manufacturer Part Number	80165
Maximum Flow Rate	3.4 Gallons Per Minute
Maximum Pressure	3700 Pound per Square Inch
Model Number	80165
Number of Items	1
Number of Packs	1
Power Source	manual
Specification Met	CE
UPC	879399001772
Unit Count	1.0 Count

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