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Nilfisk MH 4M Heavy-duty Hot Water Pressure Washer

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ID: K605986

EAN: 5711145275479

MPN: 107146916

7,9/10
After-sales assistance & Spare parts
Nilfisk MH 4M Heavy-duty Hot Water Pressure Washer
+40 sold
Technical data
Heavy-duty axial pump
Pump head material
Brass
Maximum hourly pump flow rate
860 L/h
Max. pressure
250 bar
Engine speed
1450 RPM
Engine
Induction
Delayed Total Stop
Yes
Operating mode
Three-phase 400 V
Thermostat
Yes
Wheeled
Type
Trolley
Detergent tank
Weight
133 Kg
Manufacturing country
Hungary
Product Features
Model
MH 4M
Wheeled
Type
Trolley
Operating mode
Three-phase 400 V
Operation mode
Hot water
Max. temperature
150 °
Delta T - water temperature change
40 °
Thermostat
Yes
Detergent tank
10
Detergent delivery
Low-pressure
Diesel tank
15 L
Fuel consumption
3.5 kg/h
Anti-limestone tank
Yes
Manufacturing country
Hungary
Motor data
Motor type
Electric three-phase
Engine
Induction
Motor speed
1450 RPM
Max. power absorption
3.6 Kw
Power supply
400 V electric
Manufacturing country
Denmark
Pump data
Pump type
Inline-three cylinders
Heavy-duty axial pump
Pistons material
Ceramic
Pump head material
Brass
Brass pump head
Engine speed
1450 RPM
Flow rate
14.3 lt/min. (860 lt/h.)
Max flow rate per minute
14.3 L/min
Maximum hourly pump flow rate
860 L/h
Operating pressure
180 bar
Max. pressure
250 bar
Safety valve
Yes
Manufacturing country
Denmark
Equipment
Integrated detergent tank
Yes
Detergent tank
Type of attachment
Quick coupling
Delayed Total Stop
Yes
Burner
Yes
Stainless steel discharge pipe
Yes
Analogue dashboard with indicator lights
Yes
Tool holder
Yes
Power cable holder
Yes
Free gifts/extra features
Wooden pallet (safe shipping)
Yes
Spray gun
Yes
Heavy-duty spray gun
Yes
Heavy-duty lance
Yes
High-pressure hose for spray gun
10m
Hose length
10 m
Instructions manual
Yes
Dimensions and logistics
Product dimensions in cm (L x W x H)
100x66x103cm
Net weight
133 Kg
Packaging
Original packaging on pallet
Original packaging/s dimensions in cm (L x W x H)
106x81x122cm
Weight including packaging
140 Kg
Assembly time
Assembled
Prompt Delivery
5 items in stock
Free Shipping
Estimated delivery: 30/09/2025 - 02/10/2025
€ 3.900,33
Vat included
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Description

Professional Three-phase Hot Water Pressure Washer Nilfisk MH 4M

The MH 4M allows hot water cleaning and use for up to 4-6 hours per day, and thanks to the high-efficiency, low-consumption EcoPower boiler it offers more efficient and faster cleaning. Additionally, maintenance can be carried out quickly, as all major components are easily accessible and inspectable. The fuel level indicator on the tank helps minimise downtime.

Nilfisk has designed the new hot water range with the aim of maximum manoeuvrability on all types of surfaces. Thanks to the innovative design, the MH4 series high pressure washers are always easy to push or pull, depending on the application. In addition, the layout of the components is designed to maximise balance and maximise manoeuvrability in all situations

High-efficiency motor 1450 rpm (50 Hz) or 1750 rpm (60 Hz)
Brass pump head
3 Ceramic pistons
Pressure-controlled operation
Oil cup and diesel tank
Low oil indicator and safety float switch

Suitable for a wide variety of uses, it is the ideal machine in agricultural environments, for cleaning and maintenance of machinery or in all professional tasks requiring deep cleaning. It is easily transportable thanks to the double handle on the back and the four wheels, which allow it to be moved easily and used wherever it is needed.

The machine is also equipped with a Total Stop system, which automatically switches the machine off when the gun trigger is released.

It is equipped with a vertical diesel-powered boiler that allows water to be heated up to 90°C degrees.

In addition to extreme practicality and high performance, it must be said that this hot water pressure washer is lightweight, easy to handle, very comfortable to transport, and also features a very neat design. Simple and user-friendly controls.

Why choosing an hot water pressure washer The use of a hot water pressure washer is necessary when oily or particularly stubborn dirt needs to be broken down in the shortest possible time. The washing efficiency of hot water is considerably higher than that of cold water (up to 50% higher on certain types of residues), as the heat promotes the loosening of dirt, and the incidence of heat on the surface facilitates rapid drying. Main advantages deriving from the use of a hot water pressure washer: less washing time (for the same amount of dirt), better disintegration of non-water soluble dirt, less drying time and less detergent; in short, lower fixed cleaning costs.

Main Features

High-efficiency EcoPower boiler with an efficiency of over 92% that reduces fuel consumption, with eco mode it is possible to work at 60°C with maximum boiler efficiency: in fact, a temperature rise above 60°C increases fuel consumption.

The BURNER ADJUSTMENT THERMOSTAT: allows you to adjust the water outlet temperature

Possibility to choose the pressure at which the detergent is drawn from the tank (10 L). This is obtained by means of a knob on the dashboard

Large boiler discharge chute is made of stainless steel.

Equipped with the innovative Delayed Total Stop system that stops the machine when the trigger is released on the gun to allow even greater energy savings and always maximum power when restarted than the traditional Total Stop System.

Low pressure detergent suction: The delivery of the chemical (which does not pass through the pump, but is sucked in with a Venturi system) takes place by reducing the operating pressure of the machine. It is therefore possible to distribute the product with a wide conical jet over surfaces close to the operator.

MOTOR: electric three-phase (400 V) 7.9 hp (5.9 kW)

- Fuel tank (15 L)

- Detergent tank (10 L)

Pump Technical Specifications

MH 4M is equipped with the NA4 pump with 3 ceramic-coated in-line pistons and a high-efficiency 1450 rpm motor.

High-efficiency, low-consumption EcoPower boiler offers more efficient and faster cleaning

FLOW RATE:

  • Max flow rate: 860 L/h (14.3 L/min) The flow rate is the most important technical data of a pressure washer, even before the pressure, as it identifies the real power of the unit.

OPERATING PRESSURE:

  • 180 Max bar, among the highest pressure levels of its category.

Details:

  • Brass pump head
  • EcoPower boiler with Eco mode
  • Equipped with NA5 pump with 3 ceramic pistons
  • Indication light on the dashboard when the pump oil is about to run out.

Robust for prolonged applications. Ideal for large workshops, washing tractors and construction machinery, cleaning facades of large buildings.
Thanks to safety devices, downtimes can be minimised.

Additional Features

Easy and user-friendly controls which allow a rapid use of the unit.

Various indicator lights on the machine for optimum operation

Focus on the wide and comfortable handle

Focus on the gun and lance housing, which is present on both sides

Focus on the gun holder, present on both sides

Focus on the housing for storing the power cable, present on both sides

Focus on the brake

Focus on the 4 wheels

Focus on the storage tool compartment on top of the machine

Focus on the connection for easy transport

Focus on the water inlet

Focus on the fuel tank

Focus on the limestone inlet

Focus on the latch to open the bonnet for maintenance or other engine operations

OVERALL SIZE: 100x66x103 cm

WEIGHT: 133 Kg

The machine is equipped with a tank with a float for water inlet, allowing the machine to have sufficient water reserve for operation (possibility of adding antifreeze liquid for winter storage)

Free items & Standard equipment

Free Items Included

The Nilfisk three-phase hot water pressure washer is shipped in its original package. It comes fully assembled. You will just need to assemble the lance.

The packaging also includes:

- Professional hydro-gun

- UNIVERSAL PLUS 940 lance

- High-pressure hose

- Coupling for water hose connection

- Tornado nozzle

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Questions & Answers