--- product_id: 516997904 title: "M20521 Toilet Cistern Bottom Side Fill Valve Adjustable Telescopic Urinal Flush Valves Parts M13-17 (3/8\") Plastic & Brass" brand: "ibergrif" price: "€ 25.50" currency: EUR in_stock: true reviews_count: 5 category: "Ibergrif" url: https://www.desertcart.it/products/516997904-m20521-toilet-cistern-bottom-side-fill-valve-adjustable-telescopic-urinal store_origin: IT region: Italy --- # Adjustable height for perfect fit Dual installation: bottom or side fill Durable brass & ABS, 100,000+ cycles M20521 Toilet Cistern Bottom Side Fill Valve Adjustable Telescopic Urinal Flush Valves Parts M13-17 (3/8") Plastic & Brass **Brand:** ibergrif **Price:** € 25.50 **Availability:** ✅ In Stock ## Summary > 🚽 Upgrade your flush game with Ibergrif’s sleek, silent, and smart valve! ## Quick Answers - **What is this?** M20521 Toilet Cistern Bottom Side Fill Valve Adjustable Telescopic Urinal Flush Valves Parts M13-17 (3/8") Plastic & Brass by ibergrif - **How much does it cost?** € 25.50 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.it](https://www.desertcart.it/products/516997904-m20521-toilet-cistern-bottom-side-fill-valve-adjustable-telescopic-urinal) ## Best For - ibergrif enthusiasts ## Why This Product - Trusted ibergrif brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Built to Last:** Premium ABS body paired with a brass hex nut guarantees rugged durability and over 100,000 reliable flush cycles. - • **Clean Water Flow:** Integrated filter net blocks impurities, protecting your system and ensuring smooth, quiet operation. - • **Effortless Setup:** Complete kit with water pipe and clear instructions makes installation so simple, anyone can do it—no plumber needed. - • **Versatile Installation:** Supports both bottom and side fill valve setups, perfect for one-piece or two-piece toilets—flexibility that fits your space. - • **Tailored Fit, Every Time:** Adjustable telescopic design ensures compatibility with most dual flush toilets, eliminating guesswork. ## Overview The Ibergrif M20521 Toilet Cistern Bottom Side Fill Valve is a premium, adjustable float valve designed for dual flush toilets. Crafted from durable ABS plastic and brass, it supports both bottom and side fill installations, ensuring broad compatibility. Featuring an integrated filter for cleaner water and a lifespan exceeding 100,000 flush cycles, it combines longevity with easy DIY installation, making it a top choice for modern, efficient bathroom upgrades. ## Description IBERGRIF is becoming one of the famous manufacturers and suppliers of sanitary ware and lightings in Spain; All product ranges offer a new design from your kitchen and bathroom, to outdoor; The minimalist is incorporated into exceptional beauty and reliability, innovative design. We always strive to helping customers live an exquisite life. Review: En effet, l'installation est très simple. Comme il y a beaucoup de calcaire chez nous, plutôt que d'acheter des produits onéreux et pas toujours efficaces, je préfère remplacer le matériel plus souvent. J'ai opté cette fois pour cette marque espagnole pas très chère. Le robinet est facile à installer, très efficace et surtout très silencieux. Il prend peu de place et le changement du sens d'alimentation est très simple. Ne pas oublier de brancher le tuyau souple avant d'ouvrir l'eau sinon c'est la douche assurée. Le système de réglage du flotteur n'est pas courant mais très efficace. Pour une installation et un résultat optimal, faut bien lire le mode d'emploi uniquement en Anglais. Il est possible d'obtenir le mode d'emploi en français via un code QR. Je reprendrai cette marque la prochaine fois. Review: Dobrej jakości spłuczka ## Features - Two Installation Way: Compared to trational cistern fill valve, we can support bottom or side fill vlave, suitable for one-piece toilet or two-piece toilet. - Adjustable Height: Equipped with the main body latch, can adjust the water lavel, compatible with most dual flush toilet systems. - Effective Clean: The inlet adopts the filter net to effectively filter the impurities in the water. - Premium Material: Made of premium ABS material, rugged and durable, hexagon fastening nut made of brass material, the life has increased to 100,000 times. - Easy Installation: Package include 1*toilet cistern fill valve 1* Water pipe 1*Instruction Sheet, Girls can also install it easily. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0BKSQ5VN1 | | ASIN | B0BKSQ5VN1 | | Best Sellers Rank | #43,356 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #30 in Toilet Water Tanks | | Brand Name | Ibergrif | | Connector Type | Slip | | Country of Publication | Spain | | Country of origin | Spain | | Customer Reviews | 4.3 4.3 out of 5 stars (2,905) | | Customer reviews | 4.3 4.3 out of 5 stars (2,905) | | Date First Available | 8 March 2023 | | Exterior Finish | Brass | | Included Components | 1*toilet cistern fill valve 1* Water pipe 1*Instruction Sheet | | Inlet Connection Size | 0.38 Millimeters | | Inlet Connection Type | Barb | | Item Dimensions | 28.5 x 13.3 x 6.9 centimeters | | Item Type Name | toilet cistern fill valve | | Item model number | M20521 | | Manufacturer | Ibergrif Griferias SL | | Manufacturer | Ibergrif Griferias SL | | Manufacturer Part Number | M20521 | | Material Type | Brass Acrylonitrile Butadi Plastic | | Maximum Pressure | 16 Bars | | Model Number | M20521 | | Number of Pieces | 1 | | Number of Ports | 1 | | Outlet Connection Size | 0.5 Inches | | Outlet Connection Type | Barb | | Product Dimensions | 28.5 x 13.3 x 6.9 cm; 350 g | | Set Name | Multi Color | | Size | 13.3 cm x 28.5 cm x 6.9 cm | | Specification Met | CE, ISI | | Thread Size | M12 x 1,75 und G3/8 Zoll | | Thread Type | Metric | | Unit Count | 1 Count | | Valve Type | Float Valve | ## Product Details - **Brand:** Ibergrif - **Exterior finish:** Brass - **Inlet connection size:** 0.38 Millimeters - **Item dimensions L x W x H:** 28.5 x 13.3 x 6.9 centimeters - **Material:** Brass Acrylonitrile Butadi Plastic ## Images ![M20521 Toilet Cistern Bottom Side Fill Valve Adjustable Telescopic Urinal Flush Valves Parts M13-17 (3/8") Plastic & Brass - Image 1](https://m.media-amazon.com/images/I/61pN3q+ulsL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by D***E on 16 February 2026* En effet, l'installation est très simple. Comme il y a beaucoup de calcaire chez nous, plutôt que d'acheter des produits onéreux et pas toujours efficaces, je préfère remplacer le matériel plus souvent. J'ai opté cette fois pour cette marque espagnole pas très chère. Le robinet est facile à installer, très efficace et surtout très silencieux. Il prend peu de place et le changement du sens d'alimentation est très simple. Ne pas oublier de brancher le tuyau souple avant d'ouvrir l'eau sinon c'est la douche assurée. Le système de réglage du flotteur n'est pas courant mais très efficace. Pour une installation et un résultat optimal, faut bien lire le mode d'emploi uniquement en Anglais. Il est possible d'obtenir le mode d'emploi en français via un code QR. Je reprendrai cette marque la prochaine fois. ### ⭐⭐⭐⭐⭐ Review *by T***L on 18 July 2025* Dobrej jakości spłuczka ### ⭐⭐⭐⭐⭐ Review *by D***X on 2 December 2025* Gerade eingebaut. Das Ventil macht einen filigranen Eindruck. Etwas Vorsicht ist geboten. Ich brauchte den Einlauf von unten. Für meinen Cersanit Spülkasten ist die Dichtung etwas klein. Die Füllmenge lässt sich einfach einstellen, die Füllmenge könnte für meinen Kasten höher sein. Das liegt aber an der Höhe des Spülkasten. Das Einlaufgeräusche ist leiser als bein alten Ventil. Haltbarkeit wird sich zeigen. ## Frequently Bought Together - Ibergrif M20521 Toilet Cistern Bottom Side Fill Valve Adjustable Telescopic Urinal Flush Valves Parts M13-17 (3/8") Plastic & Brass Multi Color - Close Coupling Kit for WC Toilet Pan Cistern Doughnut Fixings Plate Donut - SPARES2GO Toilet Cistern Seal Kit 100mm M6 Bolt Through 1.5" Rubber Dome 2" Foam Washer Set --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.it/products/516997904-m20521-toilet-cistern-bottom-side-fill-valve-adjustable-telescopic-urinal](https://www.desertcart.it/products/516997904-m20521-toilet-cistern-bottom-side-fill-valve-adjustable-telescopic-urinal) --- *Product available on Desertcart Italy* *Store origin: IT* *Last updated: 2026-05-11*