Sprinklers
Fmalra FM-HST-01
The only sprinkler here that publishes its reach at two different pressures — 7.3 to 9.8 m, and up to 15 m.
Two pressures, two answers
At 2.8 bar: a diameter of 7.3 to 9.8 metres.
At 4.1 bar: up to 15 metres.
No other sprinkler on this shelf publishes this, and it is the most useful
thing on the whole family page.
A 45 % increase in pressure gives something close to a doubling of the
diameter, which means a quadrupling of the wetted area. Pressure is not a
modifier on a sprinkler’s specification; it very nearly is the specification.
Three sprinklers here quote an area with no pressure attached at all.
Read next to these two lines, those figures are best cases from a good supply,
and a garden at the end of a long thin hose will not see them.
Two others do state a pressure, and one states 8 bar — which is a
laboratory number rather than a garden one.
This listing is the reason to be sceptical of all of them, and it earns that by
being the only one that showed its working.
Diameter, not radius — and why that matters here
The listing says diameter, explicitly.
That word is doing real work on this shelf, because two other sprinklers here
quote a distance and an area that only reconcile if one of them means radius
and the other means diameter.
A 15-metre diameter is a circle of about 177 m².
A 15-metre radius is a circle of about 707 m².
Four times the lawn, from the same number. This listing says which it means,
and it is the smaller one.
45 degrees or 15 degrees
The arms adjust between two useful settings and the listing describes both
correctly.
45° lifts the water and spreads it: a wider circle at shorter reach, better
even coverage, and much more affected by wind and by evaporation on a hot
afternoon.
15° throws flat and far: more reach into a narrow band, useful for a strip
along a fence or a bed, and it will soak anything standing in its way at knee
height.
The listing calls these fast and slow modes, which is a reasonable shorthand —
a flatter jet covers ground more quickly and less evenly.
The thread, which is the thing to check
The listing names a US-standard thread and then says it fits all common
garden hoses via the supplied quick connector.
Those two statements are not quite the same claim.
US garden hose thread (GHT) is not the same as the BSP threads used on European
taps and fittings, and the bridge here is the quick connector in the box. That
connector is what makes it work, and it means the sprinkler is committed to
whatever standard the connector is.
Nothing published says which standard that is. The practical answer is to plan
on the supplied connector being the only one that fits, and to keep it.
ABS, named
Impact-resistant, weather-resistant ABS.
For a thing that lives on a lawn and gets stepped on, mown around and left out
in frost, a named engineering plastic is a better answer than “durable
material”, which is what most of this shelf offers.
Availability
From 15 € to 18 €, that being the spread across the German, French, Italian and Spanish Amazon stores on the day of the survey.
Beyond the euro zone, the British Amazon store prices it in its own currency, which the spread above sets aside.
Nothing came back from the American Amazon store at all; the buy button there runs a search rather than opening an empty page.
Taken from Keepa on the day this page was last revised; stock and prices move without notice.
Prices quoted in this text were read on 26 September 2026. The live price is at the top of the page.
