Match pressure to the cleaning task and flow rate to the area being cleaned. For general vehicle wash-down: 100-150 bar at 600-900 litres/hour. For plant equipment and yard cleaning: 150-200 bar at 800-1,200 litres/hour. For heavy-duty industrial cleaning (concrete cleaning, paint and graffiti removal, heavy oil and grease removal): 200-250+ bar at 1,000-1,500 litres/hour. Higher pressure cleans faster but flow rate determines throughput on larger areas. The pressure and flow rating are listed on every washer product page.
Diesel engines: better fuel economy on continuous-duty work, longer engine life, higher torque at low RPM (matches pressure-washer pump load well), and lower fire risk during refuelling. Better choice for trade and contractor use, large-scale wash-down operations, and remote-site work. Petrol engines: lighter, lower initial cost, faster start-up, simpler maintenance. Better choice for occasional and light-duty use. Diesel pressure washers are typically more expensive new but cost less to operate over the equipment lifetime.
Axial-piston pumps: economical, sized for entry-level and light-trade use, lifespan typically 200-500 operating hours of intensive work. Tri-plunger ceramic pumps: trade-and-industrial standard, ceramic plungers and bronze valves for long life, lifespan typically 1,500-3,000+ hours of intensive work. Brass-head pumps: industrial heavy-duty, brass head construction with stainless plungers, suited to continuous high-pressure operation in fleet and contractor service. Match pump type to use intensity; the pump type is listed on every product page.
Yes. Replacement pump assemblies (sized to specific washer models), pump-rebuild kits (seal kits, valve kits, plunger replacements), replacement lances and trigger guns (matched to the washer's outlet thread), replacement high-pressure hoses (rated to the washer's working pressure), and replacement nozzle sets (the standard fan-spray nozzles plus rotating-jet nozzles, foam-injection nozzles, and variable-pressure nozzles) are available across the diesel pressure washer range. Search by the washer model code, or WhatsApp 07754288583.
Every product is backed by our Fit Guarantee. If a part is incompatible with your machine, you can return it hassle-free. For damaged-on-arrival items, report within 24 hours with photographs to [email protected] — we will arrange collection. For other returns, email us first to obtain a Return Merchandise Number before sending. Returns are accepted within 30 days of purchase, in original packaging, on UK orders. A restocking fee may apply on returns where the buyer has changed their mind. Refunds are issued to the original payment method once the return is inspected.
Delivery time depends on the product, your destination, and availability — the estimated time for any item appears on the product page, and "Check where we deliver" confirms coverage for your postcode before you order. Next-day delivery is available on most products; the option appears at checkout when applicable. We deliver across the UK, Europe, the Middle East, and Africa. Use the country selector at checkout to confirm coverage and delivery options for your destination.
Within Pressure Washer & Scrubber, Diesel Pressure Washers covers the diesel-engined pressure-washing equipment used in workshop, fleet-cleaning, agricultural, and contractor operations — independent of mains electrical supply, with the high power output and continuous-duty operation needed for heavy-duty cleaning, vehicle wash-down, plant-equipment cleaning, and yard-and-site cleaning work.
Parts for Machines supplies diesel pressure washers across the trade and contractor ranges, with rated pressures typically running from 100 bar (light-duty diesel washers for general cleaning) up to 250+ bar (heavy-duty industrial diesel washers for plant, agricultural, and contractor wash-down operations). Diesel-engined washers are the working choice where mains electrical supply is unavailable, where high-output continuous operation is needed, or where the noise and emissions of mains-electric petrol-engined alternatives are not suitable.
We are an authorised distributor and reseller of SIP across the diesel pressure washer range. SIP covers the trade-grade diesel pressure-washing equipment specified for workshop, agricultural, and contractor use — covering the standard pressure-and-flow combinations and the matched pump, lance, and nozzle accessories.
Specifications listed on every product page include the working pressure (in bar — typical 100-250 bar), the flow rate (in litres per minute or hour — typical 600-1,200 litres per hour for diesel washers), the engine make and rated power (typical 5-15 hp diesel engines from major engine makes), the engine fuel-tank capacity (sets continuous run-time), the pump type (axial-piston for entry-level; tri-plunger ceramic for trade-and-industrial; brass-head pumps for heavy-duty industrial), the lance and nozzle specification (standard 0-degree, 15-degree, 25-degree, 40-degree fan-spray nozzles included with most washers), and the chassis type (frame-mounted, trolley-mounted, or skid-mounted).
Trade pricing on multi-unit and contractor-fleet orders is available; contact the team via WhatsApp 07754288583. Diesel pressure washers typically need kerbside-delivery booking — confirmation appears at checkout.
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