JET-USA Pressure Washers Compared
This guide compares seven JET-USA pressure washers: RX470, RX540, RX550, CX630, CX660, TX870 and the diesel-powered DX800.
The range covers corded electric, petrol and diesel machines. Rather than ranking them simply by the highest PSI figure, this guide looks at pressure, water flow, hose reach, power source, portability and the types of cleaning task each format may suit.
Testing statement: Firebusters has not personally tested or operated these pressure washers. Specifications are based on current manufacturer, supplier and published manual information.
Quick Model Guide
- RX470: Compact electric model for lighter household cleaning where small size and easy storage matter.
- RX540: Electric model with a 10m hose and a larger accessory package.
- RX550: Higher-output electric option with increased published pressure and flow.
- CX630: Petrol-powered option for outdoor cleaning where mains electricity is inconvenient.
- CX660: Petrol model with an upright configuration and similar general output class to the CX630.
- TX870: Large petrol machine using an Annovi Reverberi triplex pump and substantially higher water flow.
- DX800: 418cc diesel machine with 3600 PSI continuous pressure, 4000 PSI maximum pressure and 17L/min flow. At 106kg, it is a substantially larger machine intended for high-demand outdoor cleaning rather than easy household portability.
Specification Comparison
| Model | Power | Published pressure | Water flow | Hose | Pump | Weight / format |
|---|---|---|---|---|---|---|
| RX470 | 240V, 2100W electric | 1800 PSI published | 6.2L/min rated, 7.1L/min max | Check current package | Check current model documentation | Approx. 6kg |
| RX540 | 240V, 2200W electric | 2800 PSI max | Approx. 5.8–6.8L/min | 10m | Check current model documentation | Electric trolley format |
| RX550 | 240V, 3200W electric | 3500 PSI max / 2500 PSI continuous | 6.8L/min rated, 8.5L/min max | Check current supplied kit | Check current model documentation | Larger electric model |
| CX630 | 212cc, 7HP petrol | 4800 PSI max / 3200 PSI continuous | 9.5L/min | Check current kit | Check current model documentation | Petrol trolley |
| CX660 | 212cc, 7HP petrol | 4800 PSI max / 3100 PSI continuous | 9.5L/min | Check current kit | Check current model documentation | Upright petrol format |
| TX870 | 420cc petrol | 5000 PSI max / 4207 PSI continuous | 15L/min | 20m wire-braided | Annovi Reverberi RSV 4G40D triplex | Large petrol trolley |
| DX800 | 418cc, 10HP diesel | 3600 PSI continuous / 4000 PSI maximum | 17L/min | 15m in current detailed specification — see hose note below | Triplex, brass head | 106kg, four-wheel trolley |
JET-USA DX800 Diesel Pressure Washer
The DX800 adds a genuinely different power source and operating format to this JET-USA comparison.
Current supplier specifications identify it as model DX800, SKU PRWDSLJT800A. It uses a 418cc 10HP diesel engine driving a brass-head triplex pump.
Verified DX800 Specifications
| Model | DX800 |
| SKU | PRWDSLJT800A |
| Engine | 418cc, 10HP diesel |
| Starting | Electric with recoil backup |
| Fuel tank | 4.5L |
| Pump | Triplex with brass head |
| Continuous pressure | 3600 PSI |
| Maximum pressure | 4000 PSI |
| Water flow | 17L/min / 4.5GPM |
| High-pressure connection | 3/8-inch brass quick connector |
| Current detailed hose specification | 15m steel-braided high-pressure hose |
| Spray tips | 0°, 15°, 25°, 40° and soap nozzle |
| Water inlet hose | 3m supplied |
| Chemical siphon hose | 1.5m supplied |
| Wheels | Four-wheel frame with 10-inch no-flat tyres |
| Dimensions | Approximately 65 × 100 × 90cm |
| Product weight | Approximately 106kg |
3600 PSI Continuous vs 4000 PSI Maximum
The earlier DX800 draft treated 3600 PSI as the maximum pressure. Current specifications provide a clearer distinction:
- Continuous pressure: 3600 PSI
- Maximum pressure: 4000 PSI
This distinction matters when comparing pressure washers. A short-duration or maximum figure should not be compared directly with another machine’s continuous operating pressure.
The DX800 also has a published water flow of 17L/min, which is an important part of its overall cleaning capability.
There Is a Hose-Length Discrepancy
The current Edisons detailed specification and “in the box” list both state that the DX800 is supplied with a 15m steel-braided high-pressure hose.
However, the current product-page title contains a reference to a 20m hose.
Diesel Does Not Automatically Mean Better
The DX800 may make sense where diesel power, high water flow and independence from mains electricity are genuinely useful.
That does not mean diesel is automatically the best pressure-washer power source.
Compared with smaller electric machines, the DX800 introduces:
- 106kg machine weight
- diesel fuel storage and handling
- engine-oil and filter maintenance
- engine noise
- hot exhaust
- carbon-monoxide hazards
- greater storage requirements
For normal car washing or occasional domestic cleaning, a smaller machine may be much easier to store, move and control.
Engine Oil Must Be Added Before First Use
The manual also advises that the electric-start battery may arrive with some charge but should be charged before use.
Follow the manual supplied with the actual machine for oil specification, servicing intervals and battery procedures.
Carbon Monoxide: Outdoor Operation Only
The DX800 manual contains strong carbon-monoxide warnings.
The diesel engine should be operated in a well-ventilated outdoor location where exhaust gases can disperse.
Do not run it inside a:
- garage
- shed
- workshop
- warehouse
- carport or other enclosed/partly enclosed space where exhaust can accumulate
Opening doors or windows does not make indoor engine operation safe.
The manual also says to consider prevailing wind and air movement and keep exhaust away from building openings.
It specifies approximately 1.5m clearance around the machine, including overhead.
High-Pressure Injection Is a Medical Emergency
High-pressure water can penetrate skin and inject water, contamination or chemical material into underlying tissue.
The DX800 manual specifically warns that the pressure can cause serious injury or amputation.
WorkSafe Victoria also identifies skin penetration, injected contamination, flying debris and uncontrolled hoses or nozzles as major high-pressure-water-jetting hazards.
- Never point the lance towards a person or animal.
- Never test a high-pressure leak with your hand.
- Keep hands away from the nozzle and high-pressure stream.
- Inspect hoses and couplings before use.
- Only use hoses and accessories rated for the machine’s maximum pressure.
- Depressurise the system before disconnecting hoses or performing maintenance.
Surface Damage: Start Conservatively
A machine capable of 4000 PSI maximum pressure can damage unsuitable surfaces very quickly.
Risk depends on more than the machine’s pressure setting. It also depends on:
- nozzle angle
- distance from the surface
- water flow
- surface condition
- paint or coating condition
- material strength
Potentially vulnerable surfaces include:
- vehicle paint and trim
- soft timber
- weathered mortar
- painted surfaces
- rubber seals
- electrical components
- radiator and condenser fins
Start with the least aggressive suitable nozzle and greater distance, then test a small inconspicuous area before moving closer.
Never Pressure-Wash Asbestos Cement
If there is any possibility that an older roof, wall, fence or other cement-sheet product contains asbestos, identify the material and obtain appropriate advice before cleaning it.
Electric vs Petrol vs Diesel
| Consideration | Electric | Petrol | Diesel |
|---|---|---|---|
| Mains electricity | Required | Not required | Not required |
| Engine exhaust | None | Yes | Yes |
| Engine servicing | No combustion engine | Required | Required |
| Typical portability | Usually easier for smaller models | Varies greatly by model | DX800 specifically weighs 106kg |
| Good reason to choose | Convenience where mains power is available | Mobile outdoor work without mains electricity | Sites where diesel operation and DX800-level flow/output are useful |
Who Might Consider the DX800?
Potentially a good fit
- farm and rural machinery cleaning
- larger outdoor equipment
- worksites already using diesel equipment
- large paved or hard-surface cleaning tasks
- users needing 17L/min published flow
- jobs where mains electricity is unavailable
Consider a smaller model if
- you mainly wash cars or motorcycles
- you need easy one-person loading and unloading
- storage space is limited
- you want minimal servicing
- you intend to operate equipment inside a building
- your water supply cannot comfortably support 17L/min demand
DX800 Supplied Equipment
The current detailed supplier listing includes:
- DX800 pressure washer
- 15m steel-braided high-pressure hose
- stainless-steel lance
- 0° nozzle
- 15° nozzle
- 25° nozzle
- 40° nozzle
- soap nozzle
- 3m water inlet hose
- 1.5m chemical siphon hose
Some assembly is required.
Questions to Ask Before Buying the DX800
- Do I genuinely need 17L/min water flow?
- Can my water supply reliably provide the required flow?
- Will I use it outdoors with safe exhaust clearance?
- Can I safely move and store a 106kg machine?
- Do I need 3600 PSI continuous pressure?
- Are the surfaces I clean suitable for this pressure and flow?
- Is the supplied hose 15m or 20m? Confirm because current page elements conflict.
- Am I prepared for diesel-engine and pump maintenance?
- Are replacement hoses, nozzles and pump components available?
Frequently Asked DX800 Questions
What is the DX800’s continuous pressure?
Current detailed specifications list 3600 PSI continuous pressure.
What is its maximum pressure?
Current specifications list 4000 PSI maximum pressure.
What is the water flow?
The published flow rate is 17L/min, or approximately 4.5GPM.
What engine does it use?
It uses a 418cc 10HP diesel engine.
How much diesel does it hold?
The current specification lists a 4.5L fuel tank.
Is it electric start?
Yes. It has electric starting with recoil backup.
How heavy is the DX800?
Approximately 106kg.
How long is the hose?
The current detailed specification and supplied-equipment list state 15m. However, the current Edisons page title refers to 20m, so buyers should confirm the supplied hose at purchase.
Can the DX800 be operated inside a workshop?
No. The diesel engine produces carbon monoxide. The manufacturer’s manual requires outdoor operation where exhaust gases can safely disperse.
Can it be used on asbestos cement?
No. High-pressure water cleaning must not be used on asbestos-cement products.
Has Firebusters tested the DX800?
No. Firebusters has not personally tested or operated the DX800.
Final Assessment
The DX800 broadens this JET-USA comparison by adding a substantially larger diesel-powered machine.
Its useful specifications are not simply the word “commercial” or the biggest pressure number. The important figures are 3600 PSI continuous pressure, 4000 PSI maximum pressure and 17L/min water flow.
Its 418cc diesel engine, brass-head triplex pump, four-wheel chassis and 106kg weight put it in a very different category from the compact electric RX models.
Our recommendation: consider the DX800 where its high water flow, diesel power and outdoor mobility genuinely match the work. For normal household cleaning, vehicles or occasional use, one of the smaller JET-USA models is likely to be easier to control, move, store and maintain.
Research Sources
-
Edisons – JET-USA DX800 product specifications
-
JET-USA DX800 Diesel High Pressure Cleaner – User Manual
-
WorkSafe Victoria – High-pressure water jetting
-
Asbestos Victoria – Sealing, painting, coating and cleaning asbestos-cement products
Research checked September 2026. Specifications, supplied accessories and availability can change. Always check the current manufacturer and supplier information before purchase.
