A tank, a media bed, and a valve with six or seven positions · review
The listing that names the distinction this whole site is built around: water flow 3 500 l/h, system flow 2 000 l/h — what the pump moves and what actually passes the filter, published side by side.
The bottom line The most honest flow statement on this shelf, from the maker with the fewest other figures. Water flow against system flow is precisely the distinction that makes every other listing here readable — and once you have seen it, the eight single numbers beside it look like what they are. The four-position valve and the excluded fittings are the price of that clarity.
A Krystal Clear sand filter pump with an RCD, stating a water flow of 3 500 l/h and a system flow of 2 000 l/h, running at 220–240 V. A four-function valve, an integrated 24-hour automatic timer with a display for setting the run time, a sand container and a motor the maker describes as powerful.
Hydro aeration technology is stated to give better circulation and clearer water. Compatibility is listed by pool model and size. The piston valve and the 32 mm outlet connections are stated as not included.
Water flow 3 500 l/h. System flow 2 000 l/h.
This is the distinction the whole of this site’s page on flow at zero head exists to explain, published in one line by a manufacturer.
The first number is what the pump moves. The second is what passes the assembly with a filter in it. They differ by nearly half, and every listing on this shelf that publishes a single figure is publishing the first one.
Rather than a volume, Intex publishes the pools this fits: rectangular frame 220, 260, 300 and 450 cm; Easy Set 183 to 457 cm; round metal frame 305 to 457 cm; Prisma frame round and rectangular.
It is a narrower statement than a litre range and a far more directly usable one — either your pool is on the list or it is not.
The piston valve and the 32 mm outlet connections.
Those are the parts that connect the pump to the pool, and they are published as excluded. The page adds them back rather than leaving them in a note at the end of a listing.
The French and Italian Amazon stores sat between 120 € and 125 € at the single check this page is built on.
The German, British and Spanish Amazon catalogues hold the reference with no seller standing behind it.
The American Amazon store gave back nothing, so the buy button there lands on a search instead of a blank page.
These figures are what Keepa gave back the day this page was last written. Stock and prices shift without warning.
Prices quoted in this text were read on 21 September 2026. The live price is at the top of the page.
| Flow rate | Water flow 3 500 l/h; system flow 2 000 l/h |
|---|---|
| Turnover against volume | Not published as a turnover — compatibility is stated by pool model and size instead |
| Tank diameter | Not published — a sand container is stated |
| Media charge | Not published as a weight |
| Media type | Sand |
| Valve positions | Four |
| Pump power | Not published in watts — 220–240 V stated |
| Timer | Integrated 24-hour automatic timer with a display for setting run time |
| Hose size | 32 mm outlet connections, stated as not included, along with the piston valve |
| Amazon reference | B09M5S8BXB (one reference across 5 Amazon marketplaces) |
| EAN | 6941057421872 |
Water flow is what the pump moves; system flow is what passes through the whole assembly with the filter in it. The second is always lower and is the figure that describes what the pool gets. Intex is the only maker in this family to name both in those terms.
The listing names them: rectangular frame 220/260/300/450 cm, Easy Set 183/244/305/366/396/457 cm, round metal frame 305/366/427/457 cm, Prisma frame round 305/366/427/457 cm and rectangular. A compatibility list rather than a volume is unusual and is more directly usable.
The piston valve and the 32 mm outlet connections, both stated. On a system sold as a pump for named pools, those are the parts that join it to one — and the page adds them back to what the system costs to put into service.
An Intex pool from the published compatibility list, where the fittings are already to hand
A reference exists on these Amazon stores: France, Germany, Italy, Spain, United Kingdom. Listed is not the same as in stock — availability changes daily.
Details checked on September 21, 2026.
Specifications: manufacturer sheet and Amazon product page. Prices and availability: Keepa. No product on this site has been physically tested.
10 200 l/h, 400 W, 20 l tank, 60–65 dB(A)/m
The only filter system on this shelf that publishes a noise level with a distance — 60 to 65 dB(A) at one metre — alongside 10 200 l/h from a 400 W pump and 800 g of filter balls.
Best for: A system sited near a terrace, where the decibel figure is the deciding one
6 056 l/h pump, 4 920 l/h through-flow, 38.5 cm tank, 36 kg sand
The listing that states its media requirement in full — 36 kg of #20 quartz sand or 1 000 g of filter balls, neither included — alongside two flow figures, a 38.5 cm tank and both hoses in the box.
Best for: A first sand system, where knowing exactly what else to order is worth more than a headline flow
9 000 l/h, 7.5 m head, 250 W, 7-way, 32/38 adapter
A 250 W system publishing both ends of its curve — 9 000 l/h and a maximum head of 7.5 m — with a seven-position valve, a pressure gauge, IPX5 and adapters for both hose sizes.
Best for: A mid-sized pool where knowing the head before ordering matters
