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Pressure Washer

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FAQs

Match output to the cleaning task. For yard wash-down and general cleaning, 150-180 bar with 10-12 l/min is typical. For agricultural, plant, and fleet vehicle cleaning, 200-250 bar with 12-15 l/min is the trade standard. For heavy industrial cleaning (hardened concrete, paint preparation, industrial degreasing), 250+ bar with 15-20 l/min is the appropriate range. Higher pressure and flow both contribute to cleaning power; flow particularly drives rinse-time and water-volume effectiveness.

A triplex plunger pump has three independent plungers driven by a crankshaft, with separate inlet and outlet valves per plunger — robust, serviceable, and rated for continuous-duty operation. The standard for trade and contractor washers. An axial cam pump uses a swash-plate driving multiple plungers from a single rotating cam — more compact and lower-cost but typically rated for shorter run-times and lighter duty. For occasional use, axial cam is fine; for daily contract work, specify a triplex pump.

Standard small-engine maintenance: check oil level before each use, change oil at the engine manufacturer's recommended interval (typically 50-100 hours), service the air filter, check and replace the spark plug as needed, drain fuel before long-term storage to prevent carburettor varnish. Pump maintenance is separate: check pump oil level (where applicable), and service pump seals at the manufacturer's interval.

Yes. Replacement pump seal kits, valve kits, unloader-valve service kits, and lance and nozzle spares are available for the majority of SIP petrol pressure washer pumps. Pump seals are the most common service item — a drop in pressure or visible water leak from the pump body usually indicates seal kit replacement. Search by the pressure washer or pump model code, or WhatsApp 07754288583 with the code and a photograph.

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.

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Petrol Pressure Washers

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Within Pressure Washer & Scrubber, Petrol Pressure Washers covers the engine-driven mobile pressure washers used for off-grid, contractor, and high-output cleaning applications — yards, farms, agricultural buildings, plant cleaning, fleet vehicle washing, and any cleaning job where mains-electric supply is unavailable, insufficient, or impractical. The petrol engine drives a high-pressure pump directly, giving high flow rates and pressures from a self-contained, mobile unit.

Parts for Machines supplies petrol pressure washers across the trade and contractor ranges, with rated pressures typically running from 150 bar (light contractor and yard use) up to 250+ bar (heavy plant and industrial cleaning), and flow rates from 8 l/min to 20+ l/min depending on engine and pump specification.

We are an authorised distributor and seller of SIP across the petrol pressure washer range. SIP covers trade and contractor-grade petrol washers with Honda, Loncin, and Briggs & Stratton engine options, paired with brass-head triplex pumps for sustained-duty operation.

Product pages list the rated working pressure (in bar or PSI), the flow rate (in l/min or GPM), the engine make and rated power output (in hp or kW), the pump type (axial cam pump for lighter duty, triplex plunger pump for sustained heavy-duty operation), the lance and nozzle accessories included (typically multi-degree fan nozzles, turbo nozzle, detergent injector), and the hose length and reel options. Petrol pressure washers are designed for outdoor use only — never operate a petrol engine in an enclosed space. Always check the engine oil level and water-supply availability before starting, and never run the pump dry (no water supply) for more than a few seconds — pump seal damage will result. Trade pricing on multi-unit and contractor-fleet orders is available; contact the team via WhatsApp 07754288583.

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FAQs

Match output to the cleaning task. For yard wash-down and general cleaning, 150-180 bar with 10-12 l/min is typical. For agricultural, plant, and fleet vehicle cleaning, 200-250 bar with 12-15 l/min is the trade standard. For heavy industrial cleaning (hardened concrete, paint preparation, industrial degreasing), 250+ bar with 15-20 l/min is the appropriate range. Higher pressure and flow both contribute to cleaning power; flow particularly drives rinse-time and water-volume effectiveness.

A triplex plunger pump has three independent plungers driven by a crankshaft, with separate inlet and outlet valves per plunger — robust, serviceable, and rated for continuous-duty operation. The standard for trade and contractor washers. An axial cam pump uses a swash-plate driving multiple plungers from a single rotating cam — more compact and lower-cost but typically rated for shorter run-times and lighter duty. For occasional use, axial cam is fine; for daily contract work, specify a triplex pump.

Standard small-engine maintenance: check oil level before each use, change oil at the engine manufacturer's recommended interval (typically 50-100 hours), service the air filter, check and replace the spark plug as needed, drain fuel before long-term storage to prevent carburettor varnish. Pump maintenance is separate: check pump oil level (where applicable), and service pump seals at the manufacturer's interval.

Yes. Replacement pump seal kits, valve kits, unloader-valve service kits, and lance and nozzle spares are available for the majority of SIP petrol pressure washer pumps. Pump seals are the most common service item — a drop in pressure or visible water leak from the pump body usually indicates seal kit replacement. Search by the pressure washer or pump model code, or WhatsApp 07754288583 with the code and a photograph.

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.

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