VoltagePrice Call to order
440V, three phase, 60Hz$10,559.00 1-800-471-7157

The Super Max™ 8790 AST® is the most powerful industrial/commercial, portable, electric cold water pressure washer in Daimer's 8700 AST® series. This robust pressure washer machine features Daimer's exclusive AST® (Automatic Shutoff Technology®). Driven by a 15 HP NEMA engine, providing pressure up to 5000 psi and a flow rate of 5 GPM, the Super Max™ 8790 AST® is the ideal unit for demanding applications requiring an ultra-powerful and portable cold water pressure washer.It can accept hot water up to 180°F for additional cleaning power.

Have a question about this item?
Contact us and a sales representative would be glad to help!


Price excludes freight.

pressure washer, pressure washers

The Super Max™ 8790 AST® is the most powerful portable, electric cold water pressure washer in Daimer's 8700 AST® series. It features the world's only, a Daimer exclusive, AST® (Automatic Shutoff Technology®) which provides control over the start and stop of the motor and pump when the trigger gun is operated. When AST® is in the "on" position; it automatically shuts off the pump after an adjustable 30 seconds of inactivity to prevent overheating. By reducing the wear and tear on the pump and other components, AST® greatly prolongs the life of this highly powerful cold water pressure washer.

With an astoundingly powerful 20 HP NEMA engine, the Super Max® 8790 AST® offers a flow rate of 5 GPM at an astonishing pressure of 5000 psi. This electric pressure washer equipment can be customized for a variety of applications with the addition of optional features including: two gun operation and a wet sandblasting system. This portable, electric, cold water pressure washer machine is ideal for the most difficult industrial and commercial applications and those applications which would benefit from the ultra-high power and available features, and do not require the additional cleaning power afforded by hot water and steam pressure washers.

Price excludes freight.

Daimer offers pressure washers in a variety of power configurations for worldwide requirements. The following are available: 110-120V, 208V, 220-240V, 380V, 415V, 440-480V, and 575V; single and three phase; 50 or 60 Hz. Please contact us for pricing.

Product Specifications

Warranty1 year (limited)Water Pump Warranty5 years (limited)Motor/Engine Warranty2 years (limited)
Pressure5000 psi
Flow Rate5 GPM
Temp. Optionscold water
Steam Temp.N/A
Hot Water Temp.inlet temperature
Standard Power Methodelectric: 440V, three phase, 60 Hz
Optional Power Methods(call for pricing) 220V-240V, three phase, 50 Hz; & 440V, three phase, 50 or 60 Hz
Motor Sizeheavy duty 20.0 HP - NEMA
Minimum Generator SizeContact Daimer
Gasoline/Diesel Fuel CapacityN/A
Ignition SystemN/A
Power Cords1
Heating MethodN/A
Heating Fuel CapacityN/A
Heater Exchange CoilN/A
Heater Response TimeN/A
Operating Timecontinuous use
Pump Drive Methoddirect drive
Chemical Infusionyes - low pressure injection
Wand Includeddurable 3' trigger wand with quick disconnect
Nozzles Standard0º (blast), 15º, 25º, 40º
Pressure Hose25' high pressure hydraulic hose
Pressure Hose Optionsadditional/customizable lengths available
Dimensions36"w. x 48"d. x 43"h. w/o handle
Weight385 lbs
Housingpowder-coated steel, high gloss, chip/chemical resistant
Phosphatizing SystemN/A
Acid/Phosphate Chemical FeedN/A
Trailer Mountyes - when wheels are removed
Multi-Gun Operationoptional - call for pricing
Wall Mountyes - when wheels are removed
Wet Sandblasting Systemoptional - call for pricing

Parts List


Standard Parts / Quantity

3' Durable Trigger Wand with Quick Disconnect 1
0º (Blast) Nozzle (not shown) 1
15º Nozzle (not shown) 1
25º Nozzle (not shown) 1
40º Nozzle (not shown) 1
25' High Pressure Hydraulic Hose (not shown) 1


Oops! Something went wrong with sys:dir-list tag. Contact the website administrator.


High-Powered, Cold Water Pressure Cleaner Systems For Efficient Cleaning

It is important to evaluate the overall quality before purchasing gas pressure washers, like any other machines. Quality refers to different aspects of pressure washers, such as its construction, housing, heating coils, engine, and so on. Ideally, the electric pressure washers you choose must also feature unique technologies that will help accomplish superior cleaning results and prolong the life of the machines. To experience the benefits of quality components and latest technologies in a single pressure washing machine, always make the purchase from leading suppliers.

The Super Max™ 8790 AST® from Daimer® is one of the highest selling industrial pressure washers on the market. This electric-powered, cold water-based pressure washing equipment features the advanced auto shutoff technology. When the trigger gun is in operation, the motor and pump function as usual. However, when the trigger gun is not active for more than 30 seconds, the motor and pump automatically shut down to prevent components from overheating. This unique technology has been integrated into these commercial pressure washers to help extend the lifespan of the machines.

Powered by a heavy-duty 20 HP NEMA engine, the Super Max™ 8790 AST® is a powerful pressure washing machine capable of attaining high pressure levels of 5000 psi and high flow rates of 5 gpm. These pressure washers come with lots of optional functions, such as wet sandblasting technology and two-gun operation. If you do not need the additional power provided by steam or hot water pressure washers, but expect high pressure levels and flow rates, then the Super Max™ 8790 AST® will be a perfect choice.

  Contact Us
Before You Go
Sign Up For Our Email Newsletter

so That You Can Get Discount Coupons, Promos, Company News and More!


Before You Go

Help us understand why you're leaving

Did you find what you were looking for?
What could we improve to earn your business?

   I am not leaving