--- product_id: 517476916 title: "Ibergrif M20521 Toilet Cistern Inlet Valve G3/8 Inch – Bottom or Side Entry" brand: "ibergrif" price: "123.88 DT" currency: TND in_stock: true reviews_count: 13 category: "Ibergrif" url: https://www.desertcart.tn/products/517476916-ibergrif-m20521-toilet-cistern-inlet-valve-g3-8-inch-bottom store_origin: TN region: Tunisia --- # Dual bottom or side inlet installation G3/8 inch (16mm) precision fit 100,000-cycle durable brass nut Ibergrif M20521 Toilet Cistern Inlet Valve G3/8 Inch – Bottom or Side Entry **Brand:** ibergrif **Price:** 123.88 DT **Availability:** ✅ In Stock ## Summary > 🚽 Upgrade your flush game with Ibergrif’s precision-engineered inlet valve! ## Quick Answers - **What is this?** Ibergrif M20521 Toilet Cistern Inlet Valve G3/8 Inch – Bottom or Side Entry by ibergrif - **How much does it cost?** 123.88 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/517476916-ibergrif-m20521-toilet-cistern-inlet-valve-g3-8-inch-bottom) ## 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 rugged brass fastening nut delivers unmatched durability and longevity. - • **Adjustable Water Level:** Easily fine-tune the float valve height for optimal dual flush performance—custom comfort guaranteed. - • **Impurity-Filtering Inlet:** Integrated filter net keeps your water clean and your system clog-free—maintenance made effortless. - • **Precision G3/8 Inch Interface:** Ensures seamless compatibility with modern plumbing setups—know before you buy! - • **Versatile Installation Options:** Supports both bottom and side entry for integrated or two-piece toilets—flexibility that fits your space. ## Overview The Ibergrif M20521 Toilet Cistern Inlet Valve features a precise G3/8 inch (16mm) connection, compatible with most dual flush toilets. Its unique design supports both bottom and side entry installation, making it adaptable for integrated or two-piece toilet systems. Crafted from durable ABS with a brass fastening nut rated for 100,000 cycles, it promises long-lasting performance. The valve includes an adjustable float latch for water level control and a built-in filter to prevent impurities, ensuring efficient and reliable operation. ## Description Shop Ibergrif M20521 Toilet Cistern Inlet Valve G3/8 Inch – Bottom or Side Entry | Float Valve For Toilet Cistern, Brass Nut Connection, Check Inlet Size Before Purchase(16mm). Free delivery on eligible orders of £20 or more. Review: Does the job. - Slightly fiddly getting it just right but very effective, quiet and adjustable. Well designed and can work around awkward cisterns. Review: Good service - Good product ## Features - Special note: The interface size of this product is G3/8 inches (16mm in diameter), not G1/2 inches. Please make sure the interface is compatible before purchasing. - Two installation methods: Compared with traditional water tank inlet valves, we can support bottom or side inlet valves, suitable for integrated or two-piece toilets. - 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. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0BKSQ5VN1 | | Best Sellers Rank | 31,514 in DIY & Tools ( See Top 100 in DIY & Tools ) 15 in Toilet Tanks | | Brand | Ibergrif | | Connector Type | Slip | | Country of Origin | España | | Customer Reviews | 4.1 out of 5 stars 3,305 Reviews | | Exterior Finish | Brass | | Exterior finish | Brass | | Included Components | 1*toilet cistern fill valve 1* Water pipe 1*Instruction Sheet | | Inlet Connection Size | 0.38 Inches | | Inlet Connection Type | Tip solder at | | Inlet connection size | 0.38 Inches | | Inlet connection type | Tip solder at | | Item Dimensions | 24.5 x 12.2 x 6.3 centimetres | | Item Highlight | Float Valve For Toilet Cistern, Brass Nut Connection, Check Inlet Size Before Purchase(16mm) | | Item Type Name | toilet cistern fill valve | | Item dimensions L x W x H | 24.5 x 12.2 x 6.3 centimetres | | Manufacturer | Ibergrif Griferias SL | | Material | Acrylonitrile Butadiene Styrene (ABS) | | Maximum Pressure | 16 Bars | | Model Number | M20521 | | Number of Items | 1 | | Number of Packs | 1 | | Number of Pieces | 1 | | Number of Ports | 1 | | Outlet Connection Size | 0.38 Inches | | Outlet Connection Type | G Connector | | Part Number | M20521 | | Set Name | Multi Color | | Size | 13.3 cm x 28.5 cm x 6.9 cm | | Specification Met | CE, ISI | | Thread Size | M13-17 | | Thread Type | Metric, Pipe | | Unit Count | 1.0 count | | Valve Type | Float Valve | ## Product Details - **Brand:** Ibergrif - **Exterior finish:** Brass - **Inlet connection size:** 0.38 Inches - **Inlet connection type:** Tip solder at - **Item dimensions L x W x H:** 24.5 x 12.2 x 6.3 centimetres - **Material:** Acrylonitrile Butadiene Styrene (ABS) - **Maximum operating pressure:** 16 Bars - **Number of ports:** 1 - **Outlet connection size:** 0.38 Inches - **Outlet connection type:** G Connector ## Images ![Ibergrif M20521 Toilet Cistern Inlet Valve G3/8 Inch – Bottom or Side Entry - Image 1](https://m.media-amazon.com/images/I/61pN3q+ulsL.jpg) ## Available Options This product comes in different **Style** options. ## Questions & Answers **Q: Is this suitable for high pressure?** A: we have a high pressure water in our house and seems to work fine. **Q: How long is the cable length?** A: I didn't measure it but probably about 15cm. Long enough to reach standard systern fitting. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Does the job. *by 6***0 on 10 April 2026* Slightly fiddly getting it just right but very effective, quiet and adjustable. Well designed and can work around awkward cisterns. ### ⭐⭐⭐⭐⭐ Good service *by M***S on 13 March 2026* Good product ### ⭐⭐⭐⭐ Good quality *by R***E on 9 July 2023* Didn't fit my old existent system, but seems to be good quality ## 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.tn/products/517476916-ibergrif-m20521-toilet-cistern-inlet-valve-g3-8-inch-bottom](https://www.desertcart.tn/products/517476916-ibergrif-m20521-toilet-cistern-inlet-valve-g3-8-inch-bottom) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-10-08*