Best Dual Flush Valves of 2025

Mohammed Clark Avatar
Mohammed Clark
Last Updated: 9 Feb 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

Fluidmaster PRO550UK Dual Flush Valve - Adjustable Cover #TOP 1
Fluidmaster PRO550UK Dual Flush Valve - Adjustable
ftb score rating icon 9.9
Roca Dual Flush Cistern Valve D2D for Screw-in Rods Cover #TOP 2
Roca Dual Flush Cistern Valve D2D for Screw-in Rods
ftb score rating icon 9.8
Housler® Adjustable Dual Flush Cistern Valve Cover #TOP 3
Housler® Adjustable Dual Flush Cistern Valve
ftb score rating icon 9.6

Top 10 Dual Flush Valves

#TOP 1

Fluidmaster PRO550UK Dual Flush Valve - Adjustable

550073
White
Fluidmaster PRO550UK Dual Flush Valve - Adjustable Cover
Fluidmaster PRO550UK Top/Side/Front Mounted Dual Flush Valve - White

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.

What We Like
Versatile outlet compatibility
Adjustable flush volumes
Flexible button installation
Easy to install
#TOP 2

Roca Dual Flush Cistern Valve D2D for Screw-in Rods

Roca
AH0004800R
Roca Dual Flush Cistern Valve D2D for Screw-in Rods Cover
Roca dual flush cistern valve, only D2D for screw-in rods by Roca, AH0004800R

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.

What We Like
Easy to install and remove
Modern threaded rod design
Effective water usage
Push button sold separately
#TOP 3

Housler® Adjustable Dual Flush Cistern Valve

202F
White and Blue
Housler® Adjustable Dual Flush Cistern Valve Cover
Housler® Dual Flush Toilet Cistern Valve, Universal 2" Bottom Outlet Flush System with Push Button, Toilet Flush System Replacement for Close Coupled Ceramic WC, Adjustable Flush Volume & Water-Saving

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.

What We Like
Universal compatibility
Adjustable flush volume
Standard push button size
Customisable fit for installation
#TOP 4

Derwent Macdee Kayla Dual Flush Valve

DVA0100
Multi-colour
Derwent Macdee Kayla Dual Flush Valve Cover
Derwent Macdee DVA0100 Kayla Cable Operated Dual Flush Valve and Button

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.

What We Like
Water-saving design
Customisable flush settings
Versatile for retrofits
Stylish chrome finish
#TOP 5

Roca AH0004800R Dual Flush Cistern Valve Bundle

PLUMB IQ
AH0004800R
White
Roca AH0004800R Dual Flush Cistern Valve Bundle Cover
Roca AH0004800R D2D Dual Flush Cistern Valve with Extra Diaphragm Washer Seal AH0007100R 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.

What We Like
Easy installation
Water-saving dual flush
Compatible with most Roca toilets
Includes extra washer seal
#TOP 6

CENPEK 25cm Toilet Flush Valve Replacement Kit

CPB-007
CENPEK 25cm Toilet Flush Valve Replacement Kit Cover
CENPEK White 25cm Height Toilet Flush Valves Replacement Valve Kit Assembly for One Piece Dual Flush Drain Valve Repair

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.

What We Like
Easy to install
Dual flush capabilities
Compatible with most toilets
Water-saving option
Convenient for repairs
#TOP 7

Thomas Dudley Niagara Dual Flush Valve 316723

316723
Multi-colour
Thomas Dudley Niagara Dual Flush Valve 316723 Cover
Thomas Dudley Niagara Pneumatic Dual Flush Valve 316723, Multi-Colour

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.

What We Like
Compatible with specific flush buttons
Durable plastic and rubber materials
Promotes water efficiency
Easy installation
#TOP 8

Ideal Standard SV01967 Dual Flush Valve Seal and Clip

SV01967
No Finish
Ideal Standard SV01967 Dual Flush Valve Seal and Clip Cover
Ideal Standard SV01967 Dual Flush Valve Seal & Clip, No Finish

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.

What We Like
Compatible with Ideal Standard valves
Includes sealing washer and clip
High-quality construction
Prevents leaks effectively
#TOP 9

Fluidmaster 3-Inch Dual Flush Valve Replacement

3-0V-001
Black
Fluidmaster 3-Inch Dual Flush Valve Replacement Cover
3-Inch Dual Flush Valve Replacment

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.

What We Like
Restores factory performance
Easy to install
Fits various 2-piece toilets
Superior flushing power
Water-saving adjustments available
#TOP 10

Housler® Adjustable Dual Flush Toilet Valve

NB202+NC203
White and Blue
Housler® Adjustable Dual Flush Toilet Valve Cover
Housler® Dual Flush Toilet Cistern Valve, Universal 1.5" & 2" Bottom Outlet Adaptor, Flush Valve with Push Button, Toilet Flush System Replacement for Close-Coupled WC, Adjustable Flush & Water-Saving

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.

What We Like
Universal fit for most toilets
Water-saving adjustable flush
Easy installation with guide
Durable and high-quality materials
Standard push button size
Buying Guide Image
Editor's Notes

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.

Written by
Mohammed Clark Avatar

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.