VoltagePrice Call to order
440V, three phase, 60Hz$9,995.00 1-800-471-7157

The Super Max8790 WS is an ULTRA-POWERFUL and portable electric cold water wet sand blaster pressure washer with an immense pressure (5000 psi), flow rate (5 GPM), and accepts hot water up to 180°F, the most powerful in the 8700 WS series. This pressure washer equipment comes standard with Daimer's wet sand blaster system, making it ideal for a wide variety of applications that would benefit from portability and sandblasting capability, but that do not require the added cleaning power provided by hot water and steam.

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pressure washer, pressure washers

The Super Max8790 WS is an ULTRA-POWERFUL and highly portable cold water wet sand blaster pressure washer that offers the flexibility of trailer mounting and optional two gun operation. Powered by a 20 HP electric engine, this cold water pressure washer offers an immense pressure of 5000 psi and flow rate of 5 GPM. This wet sand blaster pressure washer machine is ideal for applications requiring a high pressure and flow rate and sandblasting capabilities, but without the need for the additional cleaning power afforded by steam and hot water pressure washers.

The 8790 WS's included wet sand blaster system is comprised of the highest quality components, which include: metal sand point, 15' flexible pickup tube and special venturi head. The sand point draws sand into the system directly from the container. This sand is then carried into the head via the pickup tube. Once in the head the sand is mixed with high-pressured water and exits through the special round nozzle at high speeds to effectively remove layers of material from surfaces. With a specially designed 1 1/2" width spray pattern, Daimer's wet sand blaster machines work best for spot removal of corrosion, rust, and other materials from metal surfaces.

This system can be used with a range of sand grit sizes and media, including baking soda and small plastic pellets. Most importantly, the wet sand blaster system is the most efficient way to remove rust, corrosion, paint layers, heavy deposits and other substances from a variety of surfaces. Additionally, this is the safest method of sandblasting and does not require users to wear breathing protection, whereas compressed air sandblasting does.

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 Systemyes

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
Venturi Nozzle (not shown) 1
25' High Pressure Hydraulic Hose (not shown) 1
Sand Tube (not shown) 1
Pick Up Probe (not shown) 1


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Ultra-Powerful Pressure Washer Systems For Efficient Industrial Maintenance

Sometimes, even the most powerful pressure washers fail when it comes to maintaining industrial facilities. To successfully tackle the toughest cleaning applications within the stipulated time and achieve excellent cleaning results, it is imperative to utilize ultra-powerful industrial pressure washers. In addition to high pressure levels and flow rates, the best electric pressure washers are also equipped with additional functions designed to enhance the cleaning results and user experience.

If an ultra-powerful pressure washing equipment is what you are looking for, then the Super Max™ 8790 WS from Daimer® is what you need. Powered by a robust 20 HP NEMA engine, these commercial pressure washers generate cold water at exceptionally high pressure levels of 5000 psi and high flow rates of 5 gpm. The Super Max™ 8790 WS has a powder-coated steel, high gloss housing, making it chip or chemical resistant. It features a durable 3 feet trigger wand with quick disconnect and 25 feet high pressure hydraulic hose. Such pressure washing machines also feature a powerful sandblasting system.

By mixing sand with highly pressurized water, the wet sandblaster efficiently eliminates rust, corrosion, and other heavy deposits on smaller areas at a time. The high pressure levels and wet sandblasting capabilities make these pressure washing machines ideal for many tough applications that demand high cleaning power, but not the additional power offered by hot water or steam.

Cold water pressure washers, such as the Super Max™8790 WS, are also notable for their trailer mountable configurations. It is a well-known fact that trailer mounted pressure washers are best suited for industrial applications, especially for maintaining vast areas. Truck mounted pressure washers feature large water tanks that can be loaded on trucks and easily transported to different areas in an industrial zone. These power washer systems also come with an optional two-gun operation.

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