Best Dual Flush Valves of 2025

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Dual flush valves are innovative plumbing solutions that help to conserve water in the bathroom. These valves are designed to replace traditional flush mechanisms and allow users to choose between a small or large flush depending on their needs. This dual functionality ensures that only the necessary amount of water is used each time, resulting in significant water savings over time. Dual flush valves are easy to install and compatible with most toilet models, making them a cost-effective and environmentally friendly choice for any homeowner or business.
At a Glance: Our Top Picks
Top 10 Dual Flush Valves
Fluidmaster PRO550UK Dual Flush Valve - Adjustable
The Fluidmaster PRO550UK Valve is designed to fit both 1 1/2″ and 2″ flush outlets, making it versatile for various installations. With a cable length of 350mm, it offers ease of access during setup. The water-saving adjustable flush volumes allow you to conserve water by selecting full or reduced flushes according to your needs. Additionally, the dual flush button can be mounted on the top, front, or side, providing flexible installation options that suit your bathroom design.
Roca Dual Flush Cistern Valve D2D for Screw-in Rods
The Roca Dual Flush Valve is designed with convenience in mind. Its 2-inch spout allows for effective performance and efficient water use. You will appreciate the excluded push button, which can be purchased separately to suit your specific requirements. The valve features new accents in the threaded rods, adding a modern touch to your installation. It's also incredibly easy to change; you can simply twist out and remove the valve, making maintenance hassle-free.
Housler® Adjustable Dual Flush Cistern Valve
The Housler® Flush Valve offers universal compatibility, fitting most 2" bottom outlet close-coupled toilet cisterns. This makes it an ideal replacement for outdated flush systems, particularly in ceramic WC tanks. With adjustable flush volume settings of 4/2L or 6/3L, you can easily manage water usage while ensuring effective flushing. The standard 38mm push button is designed for top-mounted installation, making it a convenient choice for most cisterns. Additionally, the push-button rods can be trimmed for a precise fit, ensuring optimal function in your toilet.
Derwent Macdee Kayla Dual Flush Valve
The Kayla Flush Valve offers an easy fit solution for water-saving flush systems. With adjustable settings for both full and part flush, you can customise your water use according to your needs, helping to conserve water. The adjustable overflow feature makes it suitable for new installations and retrofits, ensuring versatility for various setups. Additionally, it comes with a stylish chrome finish dual flush button and spacer bezel, enhancing the look of your bathroom while providing functional benefits.
Roca AH0004800R Dual Flush Cistern Valve Bundle
The Roca Dual Flush Valve is designed for easy installation, ensuring that you can quickly upgrade your toilet system without hassle. It is compatible with most Roca toilets, making it a versatile choice for many households. The D2D dual flush feature allows you to choose between 6 and 3 litres per flush, helping you save water and reduce your utility bills. Additionally, it comes with an extra diaphragm washer seal for added convenience, ensuring a tight seal and preventing potential leaks.
CENPEK 25cm Toilet Flush Valve Replacement Kit
The CENPEK Toilet Flush Valve is designed for toilets with a 65mm-75mm tank hole diameter and a height of 26cm-29cm. This product is easy to install, making it a convenient option for your toilet repair needs. It features dual flush capabilities, allowing you to choose between a quick flush or a full flush, which can help save water. Additionally, it is compatible with most toilets, ensuring versatility in your home. Just be aware that it is not suitable for Glacier Bay models.
Thomas Dudley Niagara Dual Flush Valve 316723
The Thomas Dudley Dual Flush Valve is designed for use with Thomas Dudley’s vantage, manifold, and duo dual flush buttons, ensuring compatibility and ease of installation. Made from durable plastic and rubber, it offers longevity and reliability in performance. This valve is part of the urinal flush vales category, making it a suitable choice for various settings. By utilising this valve, you enhance water efficiency, which can lead to reduced water bills and a more environmentally friendly home.
Ideal Standard SV01967 Dual Flush Valve Seal and Clip
The Ideal Standard Flush Valve Seal is designed for most Ideal Standard flush valves, ensuring compatibility and ease of use. It comes with a base sealing washer and a securing clip, which help to create a reliable seal and prevent leaks. With its good quality construction, you can trust this product to enhance the performance of your toilet. Additionally, the design may vary in colour, offering a subtle touch to your bathroom fixtures.
Fluidmaster 3-Inch Dual Flush Valve Replacement
The Fluidmaster Dual Flush Valve is designed to restore the original performance of your Glacier Bay or other dual flush toilets. Its easy installation means you can quickly enhance your toilet’s functionality. This valve fits various 2-piece toilets, providing superior flushing power for both solids and liquids. You can also adjust the full or half flush settings to save water while ensuring your toilet flushes effectively, making it a practical choice for any household.
Housler® Adjustable Dual Flush Toilet Valve
The Housler® Flush Valve offers a universal fit for most close-coupled WC cisterns, ensuring compatibility with 1.5" and 2" bottom outlets. You can adjust the flush volume between full and half, which helps you save water without sacrificing performance. The standard 38mm push button fits most cistern lids, making it easy for you to operate. With a step-by-step fitting guide included, installation is straightforward, allowing you to upgrade your toilet system quickly and efficiently.
During our dual flush valve research, we found 116 dual flush valve products and shortlisted 10 quality products. We collected and analyzed 41,329 customer reviews through our big data system to write the dual flush valves list. We found that most customers choose dual flush valves with an average price of £22.15.
The dual flush valves are available for purchase. We have researched hundreds of brands and picked the top brands of dual flush valves, including Fluidmaster, Roca, HOUSLER, Wirquin, PLUMB IQ. The seller of top 1 product has received honest feedback from 311 consumers with an average rating of 4.9.

Mohammed Clark is an architect and a contractor. His architectural skills are not limited to designing the plan for structures alone, but it extends to aesthetics and home décor. Before establishing his firm, he worked under a construction firm for eight years. Mohammed has gathered enough experience from his time practicing as a professional architect and now has vast knowledge in home designs and aesthetics.