








🚽 Upgrade your flush game with precision and durability!
The Ibergrif M20521 Toilet Cistern Fill Valve is a versatile, adjustable, and durable plumbing component designed for both bottom and side fill installations. Crafted from premium ABS plastic and brass, it offers a long-lasting solution compatible with most dual flush toilets. Featuring an impurity filter and easy DIY installation, it ensures efficient, clean, and quiet flushing performance, making it a top choice for modern bathroom upgrades.









| ASIN | B0BKSQ5VN1 |
| Batteries Required? | No |
| Best Sellers Rank | 17,381 in DIY & Tools ( See Top 100 in DIY & Tools ) 7 in Toilet Tanks |
| Certification | CE, ISI |
| Colour | Multi Color |
| Customer Reviews | 4.4 4.4 out of 5 stars (5,390) |
| Date First Available | 6 Mar. 2023 |
| Included Components | 1*toilet cistern fill valve 1* Water pipe 1*Instruction Sheet |
| Item Package Quantity | 1 |
| Item Weight | 350 g |
| Item model number | M20521 |
| Manufacturer | Ibergrif Griferias SL |
| Material | Acrylonitrile Butadi, Brass, Plastic |
| Maximum Pressure | 16 Bars |
| Part Number | M20521 |
| Product Dimensions | 28.5 x 13.3 x 6.9 cm; 350 g |
| Size | 13.3 cm x 28.5 cm x 6.9 cm |
| Style | Bottom/Side Entry Fill Valve |
A**3
Great product & easy to fit!
Fantastic replacement, easy to fit & better than the one that it replaced, job was all done & complete in about 30mins.
C**N
Perfect replacement for Irish toilet
Absolute fantastic product the ibergrif M20521 for the price and allowed a first time DIY attempt at plumbing to go wonderfully. Very easy to install. Build quality is better than the one I replaced as its copper and not only plastic (see photo of old grey one installed in new build 2017). No leakage even though I used no epoxy and just hand tightened the parts together. Only thing that was also needed was a reducing bush to take the larger size water pipe down to the G3/8 size of this fill valve (see photo). Bought for a euro in Screwfix. Fits perfectly and fills up much quicker than before. Noise level is standard and as it fills quicker it gets quiet quicker too! I've now bought 2 more to keep as spares for the other toilets in the house.
A**R
European fitting.
I have a standard Irish toilet and I wanted to get a push button system instead of a lever (young kids, struggling to use it). Saw this at a great price and said I'd try it. It arrived the next day (I have Prime) and I went about installing it. All was going well until I came to the coupling plate (the silver bit that connects the cistern to the toilet) because this kit does not include the plate, and the one that is used on standard Irish toilets is too small. I COULD NOT get a plate to fit over the new fitting in any local plumbing supplier (as it is a EURO size) so I had to improve and make the hole on the old one a bit bigger with the help of the hacksaw. Once I got this sorted, it was a breeze. It works really well but perhaps the button push is a tad on the hard side to push. All in all, it's good but be aware of the dreaded coupling problem.
J**R
cheap and well made works fine
cheap and worked perfectly . used these on two different toilets. can pay a lot more for the same thing elsewhere
A**R
Excellent Replacement for Old 2.25" Flush Valves
The bad news: it's not a 2" version despite the description - so don't buy the 2" close-coupling kit that is "Frequently Bought" with this - it doesn't fit. The great news: this is a modern drop-in replacement for the older Ideal Standard 2.25" (58mm) valves. That is exactly what I was looking for but it doesn't come up in a search for 2.25" flush valves! It's much shorter too than the old 12" (30cm) one, at about 20cm high, so there's plenty of room above it for the modern dual-flush button assembly that comes with it (which can also be side-mounted). Seals well and there's plenty of scope to adjust fill level and residual water level - if you really want to. Instructions in (good) English and Chinese.
S**W
Didn’t fit
Couldn’t get a fitting to fit this to my toiket
M**S
Excellent
Excellent product, very easy to fit and does its job. Clear, easy to follow instructions as to how to fit it included.
R**Y
Better avaiable
Poor qaulity and desgin
X**X
Très bien fonctionne parfaitement
C**N
top very easy to install working very well
R**F
Genial durchdachtes Bauteil. Einfache Montage, super Funktionalität. 👍👌
V**Y
Bon produit, facile à installer Le mécanisme fait très bien son travail. Installation simple et rapide, tout est bien expliqué. Les deux boutons fonctionnent parfaitement, et l’ajustement se fait facilement selon le réservoir. Très bon rapport qualité/prix, rien à redire.
C**O
seppur economico, il rubinetto con galleggiante della Ibergrif è ben fatto, versatile e davvero universale grazie alle 3 possibilità di regolazione: altezza del fusto, altezza del galleggiante e calibrazione del rubinetto. Il sistema per spostare l'attacco 3/8 in ottone in alto lateralmente o in basso è ben congeniato e sicuro. Il funzionamento è molto preciso. Altrettanto valido il meccanismo di scarico che fa coppia con il rubinetto. Presenta due regolazioni molto utili per determinare con precisione i volumi di acqua dello scarico completo e dello scarico parziale. Li ho montati su una vecchia cassetta monoblocco Ideal Standard ELLISSE, il montaggio è risultato semplice e veloce, il rubinetto ha permesso di essere regolato in altezza facilmente, il tasto di scarico è risultato pienamente compatibile con il buco sul coperchio di ceramica. Soddisfatto!
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