---
product_id: 517476916
title: "Ibergrif M20521 Toilet Cistern Bottom Side Fill Valve Adjustable Telescopic Urinal Flush Valves Parts M13-17 (3/8\") Plastic & Brass Multi Color"
brand: "ibergrif"
price: "R565"
currency: ZAR
in_stock: true
reviews_count: 13
category: "Ibergrif"
url: https://www.desertcart.co.za/products/517476916-ibergrif-m20521-toilet-cistern-bottom-side-fill-valve-adjustable-telescopic
store_origin: ZA
region: South Africa
---

# Dual installation: bottom or side fill Adjustable height for perfect fit Durable brass & ABS, 100,000+ cycles Ibergrif M20521 Toilet Cistern Bottom Side Fill Valve Adjustable Telescopic Urinal Flush Valves Parts M13-17 (3/8") Plastic & Brass Multi Color

**Brand:** ibergrif
**Price:** R565
**Availability:** ✅ In Stock

## Summary

> 🚽 Upgrade your flush game with precision and durability!

## Quick Answers

- **What is this?** Ibergrif M20521 Toilet Cistern Bottom Side Fill Valve Adjustable Telescopic Urinal Flush Valves Parts M13-17 (3/8") Plastic & Brass Multi Color by ibergrif
- **How much does it cost?** R565 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/517476916-ibergrif-m20521-toilet-cistern-bottom-side-fill-valve-adjustable-telescopic)

## 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 brass hex nut guarantees rugged durability and over 100,000 flush cycles.
- • **Clean Water Flow:** Integrated filter net effectively blocks impurities, protecting your system and enhancing performance.
- • **DIY-Friendly Setup:** Complete kit with water pipe and clear instructions makes installation effortless—even for first-timers.
- • **Versatile Installation:** Supports both bottom and side fill valve setups, perfect for one-piece or two-piece toilets.
- • **Tailored Fit, Every Time:** Adjustable telescopic valve height ensures seamless compatibility with most dual flush toilets.

## Overview

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 over 100,000 flush cycles with an integrated filter to ensure clean water flow. Easy to install with included accessories, it fits most dual flush toilets, making it a reliable upgrade for efficient and quiet flushing.

## Description

Shop Ibergrif M20521 Toilet Cistern Bottom Side Fill Valve Adjustable Telescopic Urinal Flush Valves Parts M13-17 (3/8") Plastic & Brass Multi Color. Free delivery on eligible orders of £20 or more.

Review: 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.
Review: 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.

## 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 |
| Batteries Required? | No |
| Best Sellers Rank | 19,203 in DIY & Tools ( See Top 100 in DIY & Tools ) 10 in Toilet Tanks |
| Certification | CE, ISI |
| Colour | Multi Color |
| Customer Reviews | 4.3 4.3 out of 5 stars (5,395) |
| 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 |

## Product Details

- **Brand:** Ibergrif
- **Exterior finish:** Brass
- **Inlet connection type:** Tip solder at
- **Item dimensions L x W x H:** 28.5 x 13.3 x 6.9 centimetres
- **Material:** Acrylonitrile Butadi, Brass, Plastic
- **Maximum operating pressure:** 16 Bars
- **Number of ports:** 1
- **Outlet connection size:** 0.5 Inches
- **Outlet connection type:** Barb
- **Specification met:** CE, ISI

## Images

![Ibergrif M20521 Toilet Cistern Bottom Side Fill Valve Adjustable Telescopic Urinal Flush Valves Parts M13-17 (3/8") Plastic & Brass Multi Color - Image 1](https://m.media-amazon.com/images/I/61pN3q+ulsL.jpg)

## 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

### ⭐⭐⭐⭐⭐ Great product & easy to fit!
*by A***3 on 25 December 2025*

Fantastic replacement, easy to fit & better than the one that it replaced, job was all done & complete in about 30mins.

### ⭐⭐⭐⭐⭐ Perfect replacement for Irish toilet
*by C***N on 23 December 2024*

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.

### ⭐⭐⭐⭐ European fitting.
*by A***R on 6 August 2024*

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.

## Frequently Bought Together

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*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-03-09*