Product Overview

The Trailer Mounted Diesel Powered Hot Pressure Washer With Water Tanks NDHM.30ST is a professional heavy-duty trailer-mounted hot pressure washer designed for industrial, agricultural, construction, fleet, aviation, marine, and commercial cleaning applications where mains electricity is unavailable and powerful mobile cleaning performance is essential.

Designed, manufactured, and tested in the UK, this fully self-contained mobile hot wash system combines industrial cleaning power with onboard water storage, making it ideal for demanding remote cleaning operations and heavy-duty contract cleaning environments.

Powered by a reliable Kubota twin-cylinder 12.5HP water-cooled diesel engine, the NDHM.30/ST delivers an impressive 200 bar pressure and 18 litres per minute water flow through a premium Hawk positive displacement plunger pump. The integrated double wound vertical heating coil generates water temperatures up to 120°C, allowing fast and effective removal of grease, oil, mud, heavy contamination, traffic film, and industrial residues.

Built for continuous professional operation, the machine features a heavy-duty triple V-belt drive system, independent anti-vibration mounting, low-pressure detergent injection, and low-pressure steam stage functionality for maximum cleaning versatility.

Mounted on a robust fast towable trailer chassis with integrated water tanks, the NDHM.30/ST is engineered to withstand some of the toughest industrial and commercial cleaning environments while delivering long-term reliability and outstanding cleaning performance.

Key Features

• Professional trailer-mounted diesel hot pressure washer
• Fully self-contained mobile cleaning system
• Integrated onboard water tank system
• 200 bar operating pressure
• 3000 PSI cleaning pressure
• 18 litres per minute water flow
• Kubota twin-cylinder 12.5HP water-cooled diesel engine
• Hawk positive displacement plunger pump
• Hot water temperatures up to 120°C
• Double wound vertical heating coil
• Triple V-belt drive system
• Single screw belt adjustment
• Low-pressure steam stage
• Low-pressure detergent injection system
• Purpose-built 110V generator
• Independent anti-vibration mounted engine and heating coil
• Supplied with 16 metre twin wire high pressure hose
• Heavy-duty fast towable trailer chassis
• Built and tested in the UK
• Designed for intensive industrial and commercial cleaning

Technical Specifications

• Model: NDHM.30/ST
• Pressure: 200 Bar
• Pressure Rating: 3000 PSI
• Water Flow Rate: 18 Litres Per Minute
• Engine: Kubota Twin Cylinder Water-Cooled Diesel Engine
• Engine Power: 12.5HP
• Pump: Hawk Positive Displacement Plunger Pump
• Maximum Water Temperature: 120°C
• Drive System: Triple V-Belt Drive
• Hose Length: 16 Metres
• Hose Specification: Twin Wire 3/8" High Pressure Hose
• Hose Temperature Rating: 80°C – 120°C
• Diesel Tank Capacity: 40 Litres
• Voltage Output: 110V AC Generated
• Chemical Application: Low Pressure
• Jet Supplied: 15 Degree Nozzle
• Dimensions: 302cm x 187cm x 173cm
• Weight Unladen: 800kg
• Weight Laden: 1550kg

Optional Water Tank Configurations

The machine is available with different onboard water tank capacities to suit your application requirements:

• 500 litre water tank
• 1100 litre water tank

Please specify your preferred tank size when ordering.

Ideal For

• Construction site cleaning
• Plant and machinery washdown
• Agricultural and farm equipment cleaning
• Fleet and commercial vehicle cleaning
• Industrial factory and manufacturing cleaning
• Boat and marine cleaning applications
• Aircraft and aeroplane undercarriage cleaning
• Heavy grease and oil removal
• Remote cleaning locations without electricity
• Yard and concrete surface cleaning
• Mobile contract cleaning businesses

Why Choose This Product?

The Trailer Mounted Diesel Powered Hot Pressure Washer With Water Tanks NDHM.30ST is engineered for professional users who require a powerful, reliable, and fully mobile industrial hot wash system capable of operating in remote and demanding environments.

Its combination of high pressure, high flow, and high-temperature cleaning performance delivers exceptional cleaning efficiency across a wide range of heavy-duty applications. The Kubota diesel engine provides dependable continuous-duty operation, while the Hawk plunger pump ensures long service life and reliable pressure performance.

Unlike many lighter-duty trailer pressure washers, the NDHM.30/ST is heavily engineered for durability, reliability, and professional daily use. The integrated onboard water tanks and purpose-built 110V generator provide complete operational independence, allowing efficient cleaning in locations where mains water and electricity are unavailable.

Designed to outperform and outlast many conventional mobile cleaning systems, this machine provides serious cleaning performance for professional contractors, industrial operators, transport companies, farms, aviation cleaning, and fleet maintenance businesses.

Optional Extras

• Auxiliary 110V socket for lighting
• Whirlaway surface cleaner
• Turbo nozzle
• Chewing gum removal nozzle
• Drain crawling nozzle

Order Now

Contact Flowjet Cleaning Equipment for pricing, availability, and expert technical advice. We also supply hoses, lances, nozzles, trailer pressure washer accessories, and genuine replacement parts to keep your machine operating at peak performance.