Best Toilet Flush Valves of 2026

Harry Stack Avatar
Harry Stack
Last Updated: Jan 24, 2026

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Toilet flush valves are essential components of any toilet system. They are responsible for controlling the flow of water from the tank into the bowl, allowing for efficient flushing of waste. Flush valves come in different types, including manual and automatic, and are made from various materials such as plastic, brass, and stainless steel. Some models also feature adjustable water volume and flushing power, allowing users to optimize their water usage and reduce their environmental impact. Overall, toilet flush valves play a crucial role in ensuring the proper functioning and sanitation of any toilet system.

At a Glance: Our Top Picks

Fluidmaster 400H-002 Universal Toilet Fill Valve Cover #TOP 1
Fluidmaster 400H-002 Universal Toilet Fill Valve
ftb score rating icon 9.9
Kohler Genuine Part GP1083167 Silent Fill Valve Kit Cover #TOP 2
Kohler Genuine Part GP1083167 Silent Fill Valve Kit
ftb score rating icon 9.8
Korky 528MP QuietFILL Platinum Fill Valve Cover #TOP 3
Korky 528MP QuietFILL Platinum Fill Valve
ftb score rating icon 9.6

Top 10 Toilet Flush Valves

#TOP 1

Fluidmaster 400H-002 Universal Toilet Fill Valve

400H-002-P10
Multicolor
1- Pack
Fluidmaster 400H-002 Universal Toilet Fill Valve Cover
Fluidmaster 400H-002 Performax Universal Toilet Fill Valve High Performance Tank and Bowl Water Control, 1-Pack, Multicolor

Fix noisy or slow filling fill valves with the quietest and most powerful toilet fill valve. It is easy to install with step-by-step instructions included, and has a universal fit for most toilet models and brands. The tank and bowl water level adjustment dials help to customize the perfect flush and save water.

What We Like
Easy installation
Clear instructions
Adjustable and versatile
Quiet operation
Sturdy build quality
What We Don't Like
Occasional valve noise
Rare shutoff issue
#TOP 2

Kohler Genuine Part GP1083167 Silent Fill Valve Kit

GP1083167
Black
12.5" x 3.5" x 3"
Kohler Genuine Part GP1083167 Silent Fill Valve Kit Cover
Kohler Genuine Part Gp1083167 Silent Fill Valve Kit For All Kohler Class Five Toilets,12.5" x 3.5" x 3"

The Kohler Genuine Part GP1083167 Silent Fill Valve Kit is a manual valve type that provides a quiet filling experience. With multiple fill rate inserts, it optimizes performance while conserving water. It is adjustable to accommodate any height and is designed for Kohler Class Five toilets. To ensure the correct part, confirm the shank color, and use this part for black shanks and GP1138930 for grey shanks. With its easy installation process, you can quickly upgrade your toilet's flushing system.

What We Like
Easy installation
High quality build
OEM compatibility
Stops leaks immediately
Cost effective
What We Don't Like
Lack of fill tube documentation
Plastic threads compatibility (rare case)
#TOP 3

Korky 528MP QuietFILL Platinum Fill Valve

528MP
Black
Korky 528MP QuietFILL Platinum Fill Valve Cover
Korky QuietFILL Platinum Toilet Fill Valve - Universal Fits 99% of Toilets - Easy Height Adjust for Fast Install, 528MP

The Korky 528MP QuietFILL Platinum Fill Valve is a universal replacement for ballcocks and worn-down valves to keep your toilet running smoothly. It is easy to install with its twist-lock adjustment, and adjustable from 7.75'' to 13.5''. The package includes a fill valve, refill tube, metal refill tube clip, mounting nut, cone washer, refill adjuster, coupling nut, tamper-proof key, and instructions. Korky's toilet repair parts are universal and specific to both older and modern toilet models, and made from long-lasting chlorazone red rubber.

What We Like
Easy installation process
Clear instructions
Quiet operation
Adjustable height feature
Good price value
What We Don't Like
Fit issues in some toilets
Occasionally slower fill speed
#TOP 4

Kohler Genuine Part Toilet Canister Flush Valve Kit

1083980
Black
Kohler Genuine Part Toilet Canister Flush Valve Kit Cover
Kohler Genuine Part 1083980 3" Toilet Canister Flush Valve Kit, 5 x 5 x 10-7/8 inches

The Kohler Genuine Part 1083980 3" Toilet Canister Flush Valve Kit is a plastic-made, canister flush valve kit that comes with a 3 inches outlet and is compatible with Kohler Cimarron 1.6gpf tank model number K 4634 only. The kit is a complete assembly with a tank to bowl gasket and inlet diameter of 0.5 inches. To ensure the compatibility of the product, users must look inside the back wall of the toilet tank to identify the tank model number.

What We Like
Perfect fit for Kohler toilets
Easy installation process
Stops toilet running issues
Improved flush performance
Good value for money
What We Don't Like
Occasional missing gasket seal
Challenging installation for some models
#TOP 5

Kohler Silent Fill Toilet Fill Valve Kit

GP1138930
Colors may vary
12.5" x 3.5" x 3"
Kohler Silent Fill Toilet Fill Valve Kit Cover
KOHLER Silent Fill Toilet Valve Kit, Genuine Part GP1138930, Adjustable with Multiple Fill-Rate Inserts

The Kohler Silent Fill Toilet Fill Valve Kit is a genuine part that fills your tank quietly and provides a gracious experience. It comes with multiple fill-rate inserts that optimize performance and conserve water. The kit is adjustable to accommodate any height and is compatible with various Kohler toilets. Just confirm the shank color to determine the correct part.

What We Like
Easy installation process
Long-lasting durability
Simple water level adjustment
Quiet operation
Fits older toilet models
What We Don't Like
Not completely silent
Fill hose clip design
#TOP 6

TOTO Adjustable Fill Valve Assembly

TS999A
Blue
80 cubic inches
TOTO Adjustable Fill Valve Assembly Cover
TOTO Adjustable Replacement Fill Valve Assembly for Toilet Tanks

The TOTO Adjustable Fill Valve is designed to fit all TOTO toilet tanks, making it easy for you to find the right part without hassle. It helps restore your toilet tank to its best working condition, ensuring efficient flushing and water use. The package comes complete with everything you need, including the valve, refill tube with clamp, cone washer, and nut, so you won’t have to buy extra parts. Plus, it features a standard 7/8 inch inlet connection, which makes installation straightforward and compatible with most setups. This fill valve offers a simple way to keep your toilet running smoothly and reliably.

What We Like
Easy installation
High quality material
Clear instructions
Quiet operation
Perfect fit for Toto toilets
What We Don't Like
Tank-end gasket may leak
Replacement diaphragm not sold separately
#TOP 7

Fluidmaster Toilet Fill Valve for Glacier Bay and Niagara Toilets

703A
No Finish
1 Pack
Fluidmaster Toilet Fill Valve for Glacier Bay and Niagara Toilets Cover
Fluidmaster 703AP4 Specialty Toilet Fill Valve for Glacier Bay and Niagara Conservation Flapperless Toilets

Fluidmaster's 703AP4 Specialty Toilet Fill Valve is a direct replacement for your Glacier Bay and Niagara Flapperless Toilets, restoring and optimizing your toilet's performance to factory level. The fill valve's easy-to-install feature and DIY solution makes it an effective replacement part for common toilet fill problems. With its high-quality build, Fluidmaster's Specialty Toilet Fill Valve increases your toilet's refill speed, replacing your old or inefficient fill valves.

What We Like
Easy installation
Good price
Reliable performance
Quick shipping
Fits various toilet models
What We Don't Like
Possible mineral buildup over time
May need yearly replacement
#TOP 8

Kohler Flush Valve Kit

K-1188998
No Finish
Pack of 1
Kohler Flush Valve Kit Cover
KOHLER GENUINE PART 1188998 2" Toilet Canister Flush Valve Kit

The Kohler Flush Valve Kit is a genuine part designed to optimize the flush performance of your toilet. It features a 3" canister with a 2" outlet, which harnesses the force of gravity to ensure a powerful flush. This kit is compatible with Kohler Cimarron tank models K-4418 and K-4369, and it comes with a complete assembly including a tank-to-bowl gasket. By using this Kohler Flush Valve Kit, you can enjoy a reliable and efficient flush every time. Say goodbye to clogs and weak flushes, and keep your toilet running smoothly with this high-quality kit from Kohler.

What We Like
Perfect OEM fit
Smooth, leak-free operation
Easy installation process
Good value
What We Don't Like
May require tank removal
Occasional shipping or packaging issues
#TOP 9

KOHLER GP1229656 Canister Repair Kit

KOHLER
Black
No Size
KOHLER GP1229656 Canister Repair Kit Cover
KOHLER GENUINE PART GP1229656 Canister Repair Kit, For single flush canister toilets, Includes cap, center guide and chain

The KOHLER Canister Repair Kit is designed specifically for single flush canister toilets, making it easy for you to maintain your KOHLER toilet’s performance. This kit includes essential parts like a cap, center guide, and chain, which help ensure smooth flushing operation and reliable function. When you choose this repair kit, you’re getting genuine KOHLER components, giving you confidence in quality and compatibility. Using authentic parts helps protect your KOHLER toilet from issues caused by inferior replacements, saving you time and hassle. For best results, it’s recommended to also replace the seal with part number GP1059291, ensuring a complete and effective repair.

What We Like
Quick installation
Perfect fit for Kohler toilets
No special tools needed
Clear YouTube guidance
Restores proper flushing
What We Don't Like
Poor written instructions
Plastic parts may wear

houpeoro 3-Inch Dual Flush Valve Replacement Kit

houpeoro
HP0025-26
Black and Gray
3 Inch
houpeoro 3-Inch Dual Flush Valve Replacement Kit Cover
3-Inch Dual Flush Valve Replacement Kit for 2-Piece Toilets, Universal Toilet Flusher Replacement Kit with Gasket, Compatible with Glacier Bay, Kohler, American Standard, and Toto

The houpeoro Dual Flush Valve is a versatile replacement kit designed to fit most 3-inch two-piece toilets, including popular brands like Glacier Bay, Kohler, and American Standard. This kit offers dual flush options, allowing you to choose between a powerful full flush for solids and a water-saving half flush for liquids, helping you reduce water bills. It also restores your toilet's performance by fixing leaks, improving flush strength, and stabilizing the tank. Installation is straightforward and flexible, with adjustable valve and overflow pipe heights to ensure a perfect fit for your toilet tank. This makes upgrading or repairing your toilet simple and efficient.

What We Like
Good quality ABS material
Easy installation process
Clear step-by-step instructions
Universal compatibility with brands
Durable tank-to-bowl gasket
What We Don't Like
Does not include fill valve
Buying Guide Image

The Right Toilet Flush Valves for You

Introduction

Picking the right toilet flush valve for your bathroom can be a daunting task. With so many options on the market, it can be hard to know which one will be the best fit for your home. In this article, we will provide some useful tips to help you make an informed decision.

Types of Toilet Flush Valves

Before we dive into the specifics of choosing a toilet flush valve, it's important to understand the different types that are available. There are two main categories of toilet flush valves: manual and automatic.

Manual flush valves are the most common type. They are typically operated by a lever or button on the side of the toilet, and they allow the user to control the amount of water that is released into the toilet bowl.

Automatic flush valves, on the other hand, are activated by a sensor. When the user approaches the toilet, the sensor detects their presence and automatically releases a predetermined amount of water into the bowl. These types of flush valves are more expensive than manual ones, but they offer the convenience of hands-free operation.

Factors to Consider

When choosing a toilet flush valve, there are several factors you should consider. First and foremost, you need to make sure that the valve is compatible with your toilet. Different toilet models require different types of flush valves, so be sure to check the manufacturer's specifications before making a purchase.

Another important factor to consider is the water efficiency of the flush valve. Most toilets use a lot of water, so choosing a flush valve that is designed to conserve water can help reduce your utility bills and reduce your environmental impact.

You should also think about the size of the flush valve. In general, larger flush valves can handle more waste and will require fewer flushes to keep the toilet clean. However, larger flush valves can also be more expensive, so it's important to find a balance between cost and performance.

Finally, consider the durability of the flush valve. A high-quality flush valve will last longer and require fewer repairs over time, so it's worth investing in a product that is built to last.

Conclusion

In conclusion, choosing the right toilet flush valve is an important decision that can have a big impact on your bathroom. By considering the factors outlined in this article, you can make an informed decision and pick a flush valve that will meet your needs and provide years of reliable performance.

Frequently Asked Questions (FAQs)

1. How do I know what toilet flush valve I need?

To determine the size of the toilet flush valve you need, you can visually inspect the opening in the tank. If it is about the size of a baseball or orange, you need a 2-inch flapper. If it is about the size of a softball or grapefruit, you need a 3-inch flapper. This will ensure the proper fit and functioning of the flush valve.

2. What are the different types of toilet flush valves?

Toilet flush valves come in various types, including standard, 3-inch, 4-inch, tower-style (also known as canister-style), and dual flush valves. Each type has its own design and features, catering to different toilet models and requirements. It is important to choose the right type of flush valve that is compatible with your toilet for optimal performance.

3. Are toilet flush valves universal?

While there are different types of toilet flush valves available, most flush valves are interchangeable. The compatibility of a flush valve depends on the size of the flush hole in the toilet tank, which is determined by the porcelain manufacturer. It is important to ensure the proper sizing and compatibility for a successful replacement.

4. What is the life expectancy of a toilet flush valve?

The lifespan of toilet flush valves can vary depending on factors such as part quality, frequency of use, temperature changes, and maintenance. On average, toilet seals and valves can last anywhere from 5 to 10 years. Regular inspection and maintenance can help identify any issues and extend the life of the flush valve.

5. How often do you need to replace a flush valve?

The flush valve in a toilet typically lasts around 6-7 years, while the fill valve may last 4-5 years. However, it is important to note that the parts in a toilet may need replacement periodically, while the actual bowl remains in place. Regular maintenance and inspection can help determine when it is necessary to replace the flush valve.

6. Do I have a 2 inch or 3 inch flush valve?

To identify the size of your flush valve, you can look at the size of the drain opening at the bottom of the toilet tank. If the opening is approximately the size of an orange or baseball, you need a 2-inch flush valve. If it is more like the size of a grapefruit or softball, you require a jumbo 3-inch flush valve.

Editor's Notes

During our toilet flush valve research, we found 24 toilet flush valve products and shortlisted 10 quality products. We collected and analyzed 209,178 customer reviews through our big data system to write the toilet flush valves list. We found that most customers choose toilet flush valves with an average price of $20.32.

The toilet flush valves are available for purchase. We have researched hundreds of brands and picked the top brands of toilet flush valves, including Fluidmaster, Kohler, Korky, TOTO, houpeoro. The seller of top 1 product has received honest feedback from 384 consumers with an average rating of 4.7.

Written by
Harry Stack Avatar

Harry Stack owns a small hardware store, his career landed him a depth of knowledge in categories such as tools, equipment, machinery and hardware. In his spare time, he usually repairs furniture, safes and appliances, and he knows how to make simple repairs to plumbing or electrical fixtures. His hobbies also include woodworking and fishing.

Toilet Flush Valves Comparison Table

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#TOP10
Brand Fluidmaster Kohler Korky Kohler Kohler TOTO Fluidmaster Kohler Kohler houpeoro
Material Plastic, Rubber Plastic Plastic, Rubber Plastic Metal, Plastic Metal Plastic Metal Plastic Acrylonitrile Butadiene Styrene (ABS)
Item dimensions L x W x H 3.35 x 4.33 x 13.19 inches 11.75 x 3.75 x 3 inches 3.25 x 5.5 x 14 inches 10.8 x 3.5 x 3.5 inches 13 x 3.5 x 3 inches 4 x 2 x 10 inches 2.38 x 2.38 x 8.38 inches 3.25 x 3.25 x 10.87 inches 10 x 3.85 x 1.4 inches 11 x 3 x 3 inches
Outlet Connection Type Compression NPT NPT Barb Fill Flange Barb Barb Threaded Compression
Inlet Connection Type Fill Female Iron Pipe Fill Barb Fill 7/8 inch Barb Barb Direct -
Outlet Connection Size 0.75 Inches 1.5 Inches 0.88 Inches 3 Inches 0.88 Inches - 0.75 Inches 2 Inches 3.85 Inches 3 Inches
Exterior Finish Black brushed Plastic Plastic White - Plastic - Plastic ABS
Inlet Connection Size 0.75 Inches 1 Inches 0.88 Inches 3 Inches 0.88 Inches - 0.75 Inches 3 Inches - 3 Inches
Number of Ports 2 - 2 2 2 1 - 2 - 2
Global Trade Identification Number - 00650531688415 - 00650531618245 - - 00039961371348 00885612120458 00885612339225 -
FTB Score
ftb score rating icon 9.9
ftb score rating icon 9.8
ftb score rating icon 9.6
ftb score rating icon 9.4
ftb score rating icon 9.4
ftb score rating icon 9.4
ftb score rating icon 9.3
ftb score rating icon 9.3
ftb score rating icon 9.3
ftb score rating icon 9.3
Where to Buy