No socket, no limit · review
Honda GX200 and a triplex pump at 3300 PSI, whatever the title says.
Where this ends up A Honda GX200 and a triplex plunger pump — the two things that separate a professional machine from a homeowner one. Its title says three thousand five hundred PSI and its own bullets say three thousand three hundred.
Title: 3500 PSI. Bullet: 3300 PSI. Description: 3300 PSI.
The figure appears once as 3500 and twice as 3300, and the two that agree are the ones inside the listing — in the bullet that names the pump, and in the description that names the output.
What settles it is the machine next to it on the shelf. The Simpson PS3228 at $659 — nineteen dollars more — publishes 3300 PSI / 2.5 GPM in its title, its bullets and its description, with:
the same Honda GX200 · the same AAA triplex plunger pump · the same integrated unloader and thermal relief · the same 25 foot Morflex hose · the same 10 inch pneumatic tires · the same threaded M22 connection · the same five tips and 16 inch wand · the same 21 × 24 × 34 inch dimensions
Weights: 74 lb here, 77 lb there.
These are the same machine, and the cheaper one’s title claims two hundred PSI it does not have.
Worth knowing what exists because of claims like that: the PowerSmart at $259.99 is the only listing on this shelf with PWMA performance certification, which means its PSI and GPM were measured by somebody other than the manufacturer. Nobody else here claims it.
This is the real division across these eleven listings, and it follows price exactly.
Axial cam — the three Westinghouse machines and the DeWalt. Driven straight off the engine crankshaft, few parts, cheap, and described by Westinghouse as “maintenance-free” — which means sealed and unserviceable. When the seals go the pump is replaced. Service life is typically in the low hundreds of hours.
Triplex plunger — the five Simpsons. Three pistons driven off a crankshaft of its own, running at lower speed and lower temperature, with replaceable seals. Rated in the thousands of hours.
And this listing publishes both protections that go with it:
An integrated unloader diverts flow back at the pump when you release the trigger, instead of letting pressure build against a closed gun.
Thermal relief dumps water before recirculation heats it enough to destroy the seals.
Both matter for one reason: the commonest way any of these pumps dies is being left running with the trigger off while you move a hose. The three Westinghouse machines publish neither; the DeWalt publishes thermal relief alone.
So roughly twice the price of a Westinghouse buys a pump built to be used weekly rather than three times a summer.
The pump is also described as “designed for a long service life” rather than maintenance-free — which, on a pump whose seals can be changed, is the more honest phrase.
“Premium Honda GX200 engine starts easily and includes low-oil shutdown.”
The engines on this shelf:
Honda GX200 — this, the PS3228, the Aluminum Series 3600 Honda GX270 — the PS60869 Honda GX390 — the ALH4240 Simpson CRX 420cc — the CRX 4400 at $899.99, Simpson’s own Westinghouse 212cc OHV — three machines DeWalt 208cc · PowerSmart 212cc OHV
A GX200 is the most widely serviced small engine in the world. A carburettor, a recoil spring or a gasket set is available anywhere, and anybody who services mowers knows it inside out. On a machine you intend to keep ten years, that is worth more than a few horsepower.
Low-oil shutdown cuts the ignition before the engine seizes — the realistic failure on a machine used a few times a year after months in a garage. Published here, on the four Honda Simpsons and on the DeWalt at $429. Absent from the three Westinghouse listings, the PowerSmart, and the $899.99 CRX.
3300 × 2.5 = 8250. The industry measure is PSI × GPM, and no listing here publishes it.
Simpson CRX 4400 — 17,600 · Simpson ALH4240 — 16,800 · Simpson PS60869 — 14,000 · PowerSmart — 9500 · Simpson Aluminum 3600 — 9000 · Westinghouse WPX3400 — 8840 · this and PS3228 — 8250 · Westinghouse WPX3200 — 8000 · DeWalt — 7920 · Westinghouse WPX3000 — 6900
So the Westinghouse WPX3400 at $349 does more work per minute than this at $639.99, and the PowerSmart at $259.99 does considerably more with certified figures.
That is the honest shape of this shelf: output is cheap and durability is not. What the extra three hundred dollars buys is a pump that can be rebuilt, an engine anyone can service, and two valves protecting both.
Pressure cuts, flow rinses. At 2.5 GPM this matches the WPX3200, the PowerSmart and three other Simpsons on flow.
“The Simpson Morflex series 25’ high-pressure hose resists kinks and abrasion; Non-marring polyurethane jacket helps protect finished surfaces.”
The non-marring jacket is the detail worth noticing. Twenty-five feet of high-pressure hose gets dragged across whatever you are cleaning, and a rubber hose leaves black streaks on painted siding, decking and paving — which you then have to clean off.
A polyurethane jacket does not.
Three Simpson listings publish it. No Westinghouse, DeWalt or PowerSmart listing does.
Twenty-five feet is the short end of the shelf: the PowerSmart and Aluminum Series 3600 give 35 feet, the three big Simpsons 50.
And the bore is published on the PS3228 as “5/16-inch x 25-foot”, which is the companion figure — a longer hose needs a wider bore because pressure is lost to friction, which is why the 50-foot Monster hoses are 3/8 inch.
Threaded M22 at the pump and hose is the standard domestic fitting, and it is what lets you add a surface cleaner or a foam cannon later. Only the Westinghouse WPX3400 on this shelf actually says what M22 lets you buy.
0°, 15°, 25°, 40° and soap, with a rear-load M22 gun and a 16 inch wand.
Nine of eleven listings here supply five tips; the Westinghouse WPX3000 supplies four, dropping the 15°.
The listing describes the set as covering “tasks from stripping paint to car cleaning”, which is accurate and is also the warning nobody gives.
Stripping paint is the 0° and 15° job. A 0° tip at 3300 PSI is a pencil jet with no fan at all: it will cut flesh, carve visible grooves in decking in a single pass, and drive mortar out of brickwork. No listing on this shelf cautions about it, and all eleven include one.
Use the 25° for almost everything, the 40° on anything painted or wooden, and keep the 0° for concrete you do not care about.
10 inch premium pneumatic tires, “roll smoothly over gravel, grass, and curbs” — the phrase all five Simpson listings share.
The three Westinghouse machines use 12 inch never-flat solid wheels instead: they cannot puncture and never need air, but they skid on gravel and transmit every bump.
At 74 lb — and the catalog’s 33,021 g (1164.8 oz) agrees, at 72.8 lb — air is the right choice.
Welded steel, powder-coated, which is the construction on three of the five Simpsons here. The two Aluminum Series models use “aircraft grade aluminum” and are not lighter: the 3600 PSI Aluminum weighs 78 lb against this machine’s 74 and the PS3228’s 77.
21 × 24 × 34 inches published, which four listings on this shelf omit entirely.
No warranty. The three Westinghouse machines publish “3-Year Limited Service, Labor, and Parts Coverage with Nationwide Customer Service and Support Network”. All five Simpsons, the DeWalt and the PowerSmart publish nothing.
Which is the counter-argument to everything above: the machines with the serviceable pump come with no promise, and the machines with the sealed pump come with three years.
No soap tank or detergent route. Two Westinghouse machines publish a “Half Gallon Onboard Soap Tank”, the third a “detergent siphon hose”, the PowerSmart an onboard tank. This publishes a soap nozzle and nothing about where the soap comes from.
No PWMA certification, which only the PowerSmart claims.
No fuel tank capacity, which all three Westinghouse listings publish.
No hose bore, which its near-twin the PS3228 does publish.
And not for sale in California, which applies to all five Simpsons on this shelf — the PowerSmart is the only listing here stating no state restriction at all.
Read on the day this page was built: $640 at the American Amazon shop.
Read from Keepa on the day this page was last revised; stock and price both move without notice.
Prices quoted in this text were read on 2026-10-04. The live price is at the top of the page.
| Pressure | 3300 PSI per the bullets and the description — the TITLE says 3500, see the FAQ |
|---|---|
| Flow | 2.5 GPM |
| Pump | AAA triplex plunger with an integrated unloader and thermal relief |
| Engine | Honda GX200 with low-oil shutdown |
| Hose | 25 foot Morflex, kink and abrasion-resistant, non-marring polyurethane jacket |
| Connection | Threaded M22 at the pump and hose |
| Tires | 10 inch premium pneumatic |
| Frame | Welded steel, powder-coated |
| Weight | 74 lb per the bullet, 33,021 g (1164.8 oz) per the catalog — they agree |
| Dimensions | 21 × 24 × 34 inches, published |
| Nozzles | Five quick-connect tips plus a rear-load M22 gun and 16 inch wand |
| Compliance | 49-state — not for sale in California |
| Warranty | Not published |
| Amazon reference | B07TW9X28H |
| EAN | 0879399003752 |
Three thousand three hundred, and the listing says so twice. The title reads "Simpson PowerShot 3500 PSI Gas Pressure Washer, 2.5 GPM". The bullet reads "3300 PSI 2.5 GPM AAA triplex pump with an integrated unloader and thermal relief". The description reads "Delivering 3300 PSI at 2.5 GPM". So the figure appears once as 3500 and twice as 3300, and the two that agree are the ones inside the listing. What settles it is the PS3228 at $659 on this same shelf — nineteen dollars more — which publishes 3300 PSI / 2.5 GPM in its title, its bullets and its description, with the same Honda GX200, the same AAA triplex pump, the same 25 foot Morflex hose, the same 10 inch pneumatic tires and the same M22 connection. The two machines weigh 74 lb and 77 lb. They are the same specification, and the cheaper one’s title claims 200 PSI it does not have. For context on this shelf, the PowerSmart at $259.99 is the only listing whose figures are PWMA performance certified — independently verified — which exists precisely because of claims like this one.
It can be repaired and it runs cooler, and that is the real division on this shelf. Five Simpsons publish a triplex plunger pump; the three Westinghouse machines and the DeWalt publish an axial cam. An axial cam pump is driven straight off the crankshaft, has few parts, and is described by Westinghouse as "maintenance-free" — which means sealed and unserviceable. Service life is typically in the low hundreds of hours. A triplex plunger pump drives three pistons off a crankshaft of its own, runs at lower speed and lower temperature, has replaceable seals, and is rated in the thousands of hours. This one adds two protections: an "integrated unloader", which diverts flow at the pump when you release the trigger, and thermal relief, which dumps water before recirculation cooks the seals. Both matter because the commonest way any of these pumps dies is being left running with the trigger off. The three Westinghouse machines publish neither. So the Simpsons cost roughly twice as much and are built to be used weekly rather than three times a summer.
Starting and parts, and three machines on this shelf make the same choice. This publishes a "Premium Honda GX200 engine starts easily and includes low-oil shutdown", as do the PS3228 at $659 and the Aluminum Series 3600 at $729.99. The PS60869 uses a Honda GX270 and the ALH4240 a Honda GX390. The Simpson CRX 4400 at $899.99 uses Simpson’s own CRX 420cc instead. The house-brand engines are the Westinghouse 212cc OHV on three machines, the DeWalt 208cc, and the PowerSmart 212cc OHV. What a GX200 buys: it is the most widely serviced small engine in the world, so a carburettor, a recoil spring or a set of gaskets is available anywhere, and anyone who services mowers knows it. Low-oil shutdown cuts the ignition before the engine seizes, which on a machine used a few times a year after months in a garage is the realistic failure. It is published here, on the four Honda Simpsons and on the DeWalt at $429 — and not on the three Westinghouse listings, the PowerSmart, or the $899.99 CRX.
cleaning machines from the same category, at nearby prices. Only what all of them publish is shown: a column with holes compares nothing.
| Model | Price | Pump | Engine | Hose | Tires |
|---|---|---|---|---|---|
| Simpson PS61002-S | $640 | AAA triplex plunger with an integrated unloader and thermal relief | Honda GX200 with low-oil shutdown | 25 foot Morflex, kink and abrasion-resistant, non-marring polyurethane jacket | 10 inch premium pneumatic |
| SIMPSON PS3228 | $660 | Maintenance-free AAA triplex plunger with an integrated unloader and thermal relief | Honda GX200 with low-oil shutdown | 5/16 inch by 25 foot Morflex — the bore is published, which its twin omits | 10 inch premium pneumatic |
| Simpson 60689 | $730 | AAA triplex plunger with an integrated unloader, thermal relief and PowerBoost | Honda GX200 with low-oil shutdown | 35 feet, Morflex 5/16 inch, non-marring and abrasion-resistant | 10 inch premium pneumatic |
| Simpson PS60869 | $830 | AAA industrial triplex plunger with thermal relief, direct drive | Honda GX270 — a real Honda, where the dearer CRX uses a house engine | 3/8 inch by 50 foot Monster, kink and abrasion-resistant | 13 inch premium pneumatic |
Details checked on October 4, 2026.
Someone who wants the pump and engine to outlast the warranty they are not getting
Amazon reports what buyers took in the month before this page was last checked: at least 200.
The figure is a floor, rounded by Amazon, and read through Keepa — it says what buyers picked, not what a maker claims.
Specifications: the manufacturer sheet for cleaning machines and the matching Amazon product page. Prices and availability: Keepa. Every figure on this page names its source.
2,200 PSI (≈ 152 bar) · 2.3 GPM · single-cylinder air-cooled
The most modest petrol machine here, and the only one listed on all six Amazon stores.
Best for: Large gardens and outbuildings without power, where 150 bar is plenty
170–190 bar · 3,400 rpm · axial cam pump · self-priming
A modest pressure range honestly stated, on an axial pump — the entry to petrol here.
Best for: Occasional work away from a socket — a smallholding, a boat yard, a second property
234 bar working · 590 l/h · 5.9 hp four-stroke · 9 m (30 ft) hose
The only machine on this site that publishes a working pressure and a flow rate together.
Best for: Farmyards, contractors and large properties without power at the far end
