The part that is actually running, not the whole cistern · review
A side-entry fill valve that states its thread, its inlet position and a ten-year warranty — plus a dirt filter and an anti-hammer feature.
The bottom line The clearest fitting information in the hub — thread and position both stated — with a filter and a ten-year warranty behind it. Side entry only.
A side-entry float valve with a 3/8 in inlet, two seals, a dirt filter, an anti-water-hammer system, a step-by-step guide and a stated ten-year warranty.
3/8 in. The thread. Nothing else in this hub states it.
Horizontal entry. The position. A side-entry valve on a bottom-entry cistern is not a difficult fit — it is an impossible one. This listing tells you which it is before you order, which is what the rest of the shelf leaves you to discover.
A dirt filter catches the grit that comes down after any work on the mains, and grit is what makes a fill valve run on and a cistern trickle forever.
An anti-hammer system closes the valve progressively. In an older building with rigid pipework, the bang after a flush is usually the fill valve slamming shut, and this is the fix.
A long warranty on a component most people treat as a consumable. Whether it is ever claimed matters less than what it says about how long the maker expects the diaphragm to last.
On sale from 17 € to 20 € on the German, French, Italian and Spanish Amazon stores at the time of checking.
Also on sale on the British Amazon store, in the local currency: the range above is measured on the euro stores only.
Listed but with no offer on the American Amazon store — the reference exists there and nobody is currently selling it.
Prices and availability are what Keepa reported on the date this page was updated; both move.
Prices quoted in this text were read on 5 September 2026. The live price is at the top of the page.
| Valve type | Float valve for cistern filling — stated |
|---|---|
| Cistern opening diameter | Not stated by the maker |
| Adjustable height range | Not stated by the maker |
| Inlet connection | 3/8 in, with two matching seals supplied — stated |
| Inlet position | Horizontal — side entry, stated |
| Stated flush volumes | Not stated by the maker |
| Amazon reference | B088P8BWTG (same reference on 6 Amazon marketplaces) |
| EAN | 3760312570109 |
Look at where the flexible hose meets the cistern. If it arrives at the side wall of the cistern, this valve fits. If it comes up through the bottom, it does not — and this listing is unusually clear about which it is.
It is the bang in the pipes when a valve shuts suddenly, and cistern fill valves are a common cause. A valve designed to close progressively stops the noise and reduces the stress on your joints. In an old building with rigid pipework it is worth having.
Cistern set · TECE F10 fill valve, works 0.5–10 bar · armoured 3/8 in hose to 2019 · TECE A2 outlet valve for 13 cm cisterns · NOT for Uni 750
A three-part TECE service kit that publishes an operating pressure range and states, twice, exactly which cisterns it does not suit.
Best for: A concealed TECE cistern being serviced properly, where opening the wall twice is not an option.
≈ 94 €
Fill valve · Geberit Type 380 · for surface cistern no. 240.700 · side entry 3/8 in · fill height set by turning the spindle · noise group I, DIN 4109
The manufacturer's own valve for one specific Geberit cistern — which is either exactly right for you or completely wrong, and the listing says which.
Best for: A Geberit surface cistern number 240.700, where a genuine part is worth paying for.
≈ $36 / £29 / 30 €
Fill valve · universal · telescopic outlet tube · stepless adjustment · stated quiet and fast filling
A sixteen-euro universal fill valve with a telescopic tube and stepless height adjustment — and a listing consisting of five hashtags.
Best for: A quick, cheap replacement in a common surface-mounted cistern, by someone who can see what they are replacing.
≈ £15 / 16 €
