What the maker puts in writing
- “This hose includes industry standard M22 threaded hose connections, and can be used with pressure washers up to 3300 PSI; Use it as a replacement or, with the included adapter, as an extension to your existing hose”
- “equipped with standard M22 threaded connections with a dual o-ring design to fit almost any gas or electric pressure washer including these Simpson models – 60763, 60551, 61016, 61083, 61118”
- “The MorFlex series pressure washer hose is built for water temperatures up to 140 degrees Fahrenheit”
- “MorFlex technology results in a highly flexible and kink resistant water hose; the lightweight polyester braid makes for easy handling, and the polyurethane outer jacket is non-marring and abrasion-resistant”
- “4-inch bend protectors at each end of the hose extend the life of the accessory; polyurethane outer jacket wipes clean easily”
- Description: “fittings with dual o-ring design to fit both 14mm (0.55 in) and 15mm (0.59 in) connections and includes a 14/15mm threaded hose connector… 90 Day limited accessory”
- Reference 40224 · Catalog: 998 g (35.2 oz)
It fits both M22 sizes, and that is the whole review
M22-14mm and M22-15mm share a thread and differ in the diameter of the inner nipple the seal rides on. A 14mm hose on a 15mm outlet threads up and then leaks, or seals and lets go under pressure.
It is the single commonest mistake in this category, and five of the six hoses on this shelf can be bought wrong.
“threaded fittings with dual o-ring design to fit both 14mm and 15mm connections and includes a 14/15mm threaded hose connector.”
Two o-rings at different diameters: whichever nipple arrives, one of them seals against it. And the connector in the box covers the case where the thread itself needs translating.
Set that against what the rest of the shelf has to say about its own limits:
RainBello — “Will not work with AR Blue Clean, Sun Joe & other electric pressure washers with M22-15mm twist connect fittings”
YAMATIC 25 FT — rules out 3/4” garden hose thread, 3/8” quick-connect, and “certain Karcher, Stanley, Husky models”
YAMATIC 50 FT — “not direct fit for M22-15mm… Sunjoe, AR Blue Clean, Karcher, Stanly”
LULUW — “M22 14mm” once, in the title, while bullet three claims “most brands of cleaning machines on the market”
Flexzilla, at $53.92 — “M22 Fittings” with no size, and a warning that its own range ships “with M22 or Integrated Quick Connect fittings on select hoses”
If you do not know which outlet your machine has, this is the hose to buy. It is the only one here where that question does not arise.
And it names machines positively as well as negatively: “almost any gas or electric pressure washer including these Simpson models – 60763, 60551, 61016, 61083, 61118.”
Four-inch bend protectors, which is where hoses actually fail
“4-inch bend protectors at each end of the hose extend the life of the accessory.”
All six hoses here claim kink resistance, and all six have it along their length. But a hose does not usually fail in the middle.
It fails at the fitting. That is where it goes from rigid metal to flexible tube in a few millimeters, and that transition flexes every single time you move the gun or drag the machine. Over a season the braid breaks down at one line, and the hose either takes a permanent kink there or bursts there.
A bend protector is a tapered sleeve that spreads the bend across four inches instead of letting it happen at a point. It is a small plastic part, and it is the difference between a hose that lasts five seasons and one that lasts two.
Only one other hose on this shelf has the hardware: the Flexzilla, with an “Integrated non-kink bend restrictor”. The RainBello, both YAMATIC hoses and the LULUW rely on the material staying flexible — which is a real property and addresses the wrong part.
Polyester braid under a polyurethane jacket
“the lightweight polyester braid makes for easy handling, and the polyurethane outer jacket is non-marring and abrasion-resistant.”
Three layers, each doing one job, and the listing gets the division right.
The braid takes the pressure. Polyester resists the hoop stress so the tube does not balloon. The RainBello uses the same principle — “high-strength braided polyester”.
The polyurethane takes the abrasion, and it is the better jacket material on this shelf. Polyurethane is tougher than PVC against dragging over concrete, and it stays more supple.
And “non-marring” is the detail worth noticing. A hose being dragged across a painted car door, a cedar deck or a tiled patio leaves black marks if the jacket is a soft carbon-loaded rubber. Polyurethane does not transfer. Nothing else on this shelf makes that claim, and on a tool whose whole job is washing surfaces you care about, it is a sensible thing to have thought about.
“Wipes clean easily” is the same property stated the other way round.
The materials across the shelf: polyester braid + polyurethane here · hybrid rubber + braided polyester on the RainBello · flexible hybrid polymer on the Flexzilla · PVC on the LULUW and the YAMATIC 50 FT · nothing named on the YAMATIC 25 FT.
Replacement or extension, which doubles what you are buying
“Use it as a replacement or, with the included adapter, as an extension to your existing hose.”
A pressure hose has a female fitting at each end, because the machine outlet and the gun inlet are both male. Two hoses therefore cannot be joined without a male-to-male coupler — and that is what the connector in this box is.
What that buys in practice: your machine came with twenty or twenty-five feet; you keep it, and add this for fifty feet of reach when you need it, dropping back to the short hose for a car.
Which is better than owning a fifty-footer, because a longer hose costs pressure. Friction loss rises in proportion to length, and at a 1/4 inch inner diameter — all six of these are 1/4 inch — the water moves fast and the loss per foot is not trivial. Fifty feet loses roughly twice what twenty-five does, and the shortfall shows at the nozzle.
The honest alternative on this shelf is the YAMATIC 50 FT at $32.99, which is blunt about making the opposite choice: “[Hose Only, No Adapters]… no adapter kit, spray gun, wand, 3/8 inch quick-connect plug, or separate coupler is included.”
Fifty feet always, or twenty-five and fifty as you choose.
A hundred and forty degrees, with the word cold in the title
“built for water temperatures up to 140 degrees Fahrenheit”, and the title says “Cold Water Use”.
That is the category ceiling, and four of six here publish it in some form: this, the LULUW (“140 ℉/60 ℃”, a conversion that is exact), the Flexzilla (“scorching 140 degrees F heat”, “Optimized for cold water use”), and the YAMATIC 25 FT (“cold water only”, without a number). The RainBello and the YAMATIC 50 FT publish nothing.
What it rules out: hot-water contractor machines, which run above 180 °F, and — this is the one people try — anything from a steam cleaner. The steam shelf on this site runs between 212 and 293 °F, with saturated steam at 4 bar near 291 °F.
Same ceiling as the lance shelf, where the Xiny Tool and the Simpson wand both publish 140 °F and the wand adds “only for cold water use”. Consistent across both Simpson accessories, which is what you would hope for.
Nine hundred and ninety-eight grams, and why it is the heaviest here
998 g for 25 feet — 39.9 g a foot, the heaviest per foot on this shelf. The LULUW is 862 g, or 34.5 g a foot; the two 50-footers both carry 1633 g at the catalog, which is 32.7 g a foot.
Which sits oddly beside “lightweight polyester braid” — until you account for what is on the ends.
Two four-inch bend protectors. Dual o-ring fittings, which are larger assemblies than single-seal ones. And a 14/15mm connector in the box, which the catalog weight may well include.
So the extra mass is the hardware that makes this the hose you cannot buy wrong. It is a fair trade, and at twenty-five feet five grams a foot is about four ounces across the whole hose — not something you will feel.
Ninety days, and a part number that matches
“90 Day limited accessory.” The only warranty term on this shelf. Everything else offers service instead: both YAMATIC listings promise “technical support”, the Flexzilla offers origin — “Proudly Made in the USA with domestic and imported components” — and the RainBello and LULUW publish nothing.
Ninety days on a hose covers what can be wrong with it from the factory: a bad crimp, a flaw in the braid, a leaking seal. Those show up in the first few uses or not at all, so the term is the right length for what it covers.
And the reference matches the title. Catalog 40224, title “Simpson Cleaning 40224”. Worth saying, because the Simpson wand on the neighboring lance shelf does not manage it: its title ends 80479 and its catalog reference is 80150.
What is not published
No burst pressure, where the LULUW publishes 9000 against 3600 working and the YAMATIC 50 FT publishes 8700 against 3200. Those two bursts are within 3.4 per cent of each other while the working figures differ by 12.5, which shows the headline PSI is a choice of safety factor — and without a burst figure there is nothing to check here.
No fitting material. Both YAMATIC hoses and the LULUW specify brass; the RainBello specifies aluminum and sells it as a feature. This specifies only “industry standard M22” and the dual o-ring design.
No cold rating, where the Flexzilla claims “brutal subzero” flexibility. “Highly flexible” here is unqualified by temperature.
No coil-memory claim, which both YAMATIC hoses make explicitly and the Flexzilla makes twice.
No adapter thread specification beyond “14/15mm”, so it is not clear whether the included connector is male-to-male, which is what joining two hoses requires.
And no inner-diameter figure in the bullets — it is in the title, “(1/4 Inch)”, and the description heading says “Inner Diameter” with no value after it.
Availability
Read on the day this page was built: $26 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.
