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The 7 Best Toilet Fill & Flush Valve Reviews (2024)

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By David Mason

Toilets and bathrooms are where we use and need water the most. Before replacing your toilet flush valves, you must do proper research because there are valve types you can save and contribute to the environment by balancing your water expenditure.

Toilets are a requirement in daily life. You may want to replace the toilet bowl in your bathroom for a long time. You may complain that the tank is leaking and rusting. In long-term use, siphons can wear and leak. However, a quality valve can eliminate the leaking problem for a long time.

The new generation flush valves make your job so easy that you can find whatever features you want.

We have listed the best flush and fill valves to determine which universal toilet repair kit suits you and purchase quickly.

#1 Best Overall

Fluidmaster 400AH PerforMAX Universal High-Performance Toilet Fill Valve

Best Overall
Fluidmaster 400AH PerforMAX Universal High Performance Toilet Fill Valve, Easy Install
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The Fluidmaster 400AH PerforMAX Toilet Fill Valve is best for homeowners seeking to enhance their toilet’s efficiency with a fast-filling, water-conserving, and easily installable solution.

Toilet and bathroom designs are essential for comfort and cleanliness. The most exquisite details can tell stories that frustrate and bring you happiness. Toilet fill valves are another fine detail. Depending on your country, you may have waterline systems in different structures. Fluidmaster 400 AH Performax is a universal toilet fill valve at the top of our list.

Whether you are a new generation or a standard model toilet, Fluidmaster features PerforMAX technology. For those who do not know the meaning, it means technology that ensures enough water in the toilet bowl to get a proper wash. This feature provides two times more powerful filling than other valves in its segment. Knowing that if you need the washing tank more than once, it will be a feature that will increase your comfort. It is best compatible with 1.28 HET and 1.6 GPF toilets, including dual flush, and you can use it with 3.5 GPF before 1994. You can adjust the height of the valve body according to the particular model you use.

So, how much water do you waste in more than one fast use in this robust filling?

The good news is that this valve has a cylinder that saves water. You can protect water, one of our most valuable future-generation resources. Of course, your wallet is also included in the savings!

Another critical feature for valves in contact with water is how long they will not leak. The slightest leakage will cause abrasions in your bathrooms and toilets. The Fluidmaster 400 AH comes with a 7-year durability warranty that will relieve your worries about repairing it. When you see the valve and use it carefully, you can be convinced it will last longer than this process.

Thanks to the three steps you will follow, you can efficiently complete the setup. These steps are initial adjustment height, installation, and adjustment according to your tank. Now ready for use! Fluidmaster 400AH is a valve that can save time, money, and water in your toilet.


  • Fast Refill Rate: Offers up to 2X greater refill rate than standard models, reducing wait time between flushes.
  • Universal Fit: It is adjustable from 10 to 15 inches, making it compatible with various toilet sizes and designs.
  • Water Efficiency: An adjustable roller clamp allows for control over the water level in the bowl, helping to save water and reduce utility bills.
  • Easy Installation: It is designed for quick installation, often requiring no professional assistance and minimal tools.


  • Noise Level: While it claims to be quiet, some users may find the noise level during refilling noticeable, especially in more peaceful environments.
  • Maintenance in Hard Water: Users in areas with hard water may need to perform maintenance and cleaning more frequently due to mineral deposits affecting performance.
  • Cost: While offering superior performance, it is priced higher than some basic models, which might be a consideration for budget-conscious individuals.

#2 Runner-Up


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The TOTO Adjustable Replacement Fill Valve is best for homeowners seeking a reliable, adjustable, and easy-to-install fill valve compatible with all TOTO toilet models to enhance performance and efficiency.

TOTO is coming for those who want to replace worn, damaged, or old drain valves. It is for conscious users who care about their environment and want to invest in the future!

TOTO is an environmentally friendly rinsing valve that reduces pollution and features EcoPower with Hydrotect technology. This fill valve easily adjusts to different toilet bowl sizes and controls the filling volume, which helps reduce water flow and loss.

Savings are among our first criteria for valve options. Another feature that we think you will be interested in is self-producing Hydropower technology. It means not using extra force so that you can save.

You can flush again in less than a minute after a single flush. Users who do not want factors such as rusting, leaking, and microbes have an American standard 7/8 inch inlet pipe for the water connection, wholly made of plastic.

This valve, which is more compatible with TOTO toilet tanks, recommends working with toilet systems suitable for its structure so that you can benefit from it. Otherwise, you may not get the performance you expect.

Do not mislead the lightweight design to stand firmly against the water because the valve does not take up space and can be fixed after the connection adjustment.

As a result, the one-year warranty option may be below your expectations. Still, this type of valve will become available for long-term use when you maintain regular maintenance and checks.


  • Brand Reliability: TOTO is well-known for its quality and durability, lending trust and assurance to the longevity of its products, including this fill valve.
  • Improved Toilet Performance: After installing this valve, users typically report a noticeable improvement in their toilet’s flushing and refilling efficiency.
  • Adjustability: The adjustable water flow rate and height allow customization according to different needs and toilet specifications.


  • Plastic Construction: While durable, the plastic build may not feel as robust as some might expect, and care must be taken not to over-tighten or force components during installation.
  • Adjustment Sensitivity: The fill valve’s performance is highly dependent on correct adjustment, and users might need to experiment with settings to get the ideal water flow, which can be time-consuming or frustrating.

#3 Budget Pick

Korky 528 Toilet Fill Valve

Korky 528 Toilet Fill Valve, Universal, Black(Packaging May Vary)
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The Korky 528 Toilet Fill Valve is best for homeowners seeking an affordable and universally compatible solution for quickly resolving common toilet refill issues with an easy installation process.

Korky 528 has a structure that complies with all underground storage tank valve regulation standards. This valve aims to control and reduce water consumption and will tarnish slow-filling tanks. If you have a toilet in your bathroom next to your shower cabin, your water pipes may be in everyday use. You can find specially produced shower valves for these areas.

It may be the most annoying step in the equipment subject to installation. If you do not have the ability, you can wrap things up and cause your house to flood after long hours. But the Korky 528 is a memorizing type of valve. If your tank is not very old and you do not need to replace it, you can easily install and use the valve—a versatile and flexible valve with an adjustable range from 7 to 13 inches.

Korky already offers a 5-year warranty if you do not have an unusual hobby to change your toilet from head to toe each month. All parts are manufactured at the Wisconsin plant in the USA, which is renowned for producing durable products. The package, which we think you will like to pack carefully, includes valves, wings, sensors, filling tubes, clips, nuts, a cone washer, and a user manual. So you do not have to pay extra for the accessories you need. Savings always raise the standard!

Another feature that draws our attention is that it does not use ballcocks, which always causes your valve tank problems. You can easily set up and adjust, thanks to the twisted lock system.


  • Universal Fit: Works with a wide range of toilets.
  • Ease of Installation: User-friendly, especially for those with basic DIY skills.
  • Quiet Operation: Noticeably quieter than many old valves.
  • Adjustability: Fits various tank heights smoothly.
  • Cost-Effective: Reasonably priced for its features.


  • Installation Time: It might take longer than advertised, especially in non-ideal conditions.
  • Compatibility Issues: Transitioning from another brand or old hardware might present challenges.

#4 Best Performance

American Standard 3280.040-0070A 4-Inch Flush Valve

American Standard 3280.040-0070A 4-Inch Flush Valve Assembly for Champion One Piece Toilets, Black
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The American Standard 4-inch Flush Valve is best for individuals looking to upgrade the efficiency and performance of compatible American Standard Champion ONE-PIECE toilets with a reliable, water-conserving solution.

The American Standard 4-inch Flush Valve has garnered attention for its promise of enhanced performance and compatibility with specific toilet models.

As a critical first step, I confirmed the compatibility of this flush valve with my American Standard Champion ONE-PIECE toilet. It’s a relief that the product targets specific models (2034014 and 2004314, among others), reducing the guesswork often involved in such replacements. I began the installation process with tools and an instructional video from American Standard’s website.

The valve’s plastic construction with a chrome finish exudes a modern, sleek look. Replacing the original, more cumbersome valve with this elegant model was a visual upgrade. The product felt solid and well-designed, a testament to American Standard’s reputation for quality plumbing fixtures.

Upon installation, the flush valve’s performance was immediately noticeable. The flush was more powerful and efficient, significantly reducing the water used per flush – a boon for the environment and my water bill. However, during the installation, I noticed the proximity of the overflow/bowl fill tube to the float, a design choice that might lead to wear or jamming over time. This is a point of concern for long-term durability, which users should monitor.

Compared to other flush valves I’ve tested, this American Standard model stands out for its targeted compatibility and efficiency. While some valves offer broader compatibility, the precise fit for specific models here reduces the likelihood of leaks or mismatches often seen with universal parts.


  • Efficient Flushing: The valve provides a powerful and efficient flush, reducing water usage and improving overall performance.
  • Quality Construction: It is made of durable plastic with a chrome finish, offering a sleek and modern appearance alongside robust build quality.
  • Ease of Installation: While it requires some DIY skills, the installation is manageable and aided by an instructional video on the American Standard website.
  • Customer Support: American Standard provides helpful customer service and a reassuring warranty, providing a positive overall user experience.


  • Design Concerns: The proximity of the overflow/bowl fill tube to the float may lead to future wear or jamming, requiring monitoring and potentially additional maintenance.
  • Leakage Potential: Some users have reported needing additional sealant or facing challenges with leaks, particularly in areas with hard water, indicating that installation might need extra care and attention.

#5 Best Flush Valve

Kohler Genuine Part 1083980 3″ Toilet Canister Flush Valve Kit

Kohler Genuine Part 1083980 3" Toilet Canister Flush Valve Kit, 10.8 L x 3.5 W x 3.5 H inches
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The Kohler Genuine Part Canister Flush Valve Kit is best for homeowners seeking a reliable, easy-to-install, genuine replacement for their Kohler toilets, aiming to enhance flushing efficiency and longevity.

Ranked fifth place on our list, Kohler Canister is the flush valve with the top three seals for those looking for savings and long-term use. This valve, one of the original parts that we believe will make you happy regarding reliability and performance, helps you get a fast and clean result with a single flush.

This completely plastic flush valve kit features a three-inch box valve and a three-inch water outlet, which are compatible with all Cimarron toilets. If your old fill valve is starting to expire, replacing it with this new fill valve will be helpful. According to the details specified by its users, you can use it safely for at least ten years, and after ten years, you will be searching for spare parts.

A sense of convenience/difficulty divides its users into two in terms of installation. While most users argue that the guide is not enough for the building, other users say that the installation is relatively easy and it is a trick to follow the steps. When we examine the flush valve, we can say the building is accessible. Of course, this is all about your skills.

The Kohler Canister Flush Valve weighs 4.83 pounds and is 6x3x3 inches. This structural feature ensures the water balance in the tank, and you can prevent water waste. It can hide the remaining water while draining as much water as you need. As you can imagine, this evokes savings.


  • Ease of Installation: The valve kit is user-friendly, allowing even those with minimal plumbing experience to install it without needing professional help.
  • Genuine Kohler Quality: As an OEM part, it’s designed to fit perfectly and function as intended, maintaining the toilet’s original efficiency and extending its lifespan.
  • Effective Performance: Users typically report a significant improvement in flush power and efficiency, along with a quieter flush, which enhances the toilet’s overall functionality.
  • Comprehensive Kit: The package arrives fully assembled and includes all necessary components, such as gaskets, ensuring a complete solution without additional parts.


  • Risk of Compatibility Issues: Misidentifying your toilet model can lead to purchasing the wrong part, resulting in inadequate flush volume or fit issues. This emphasizes the need for careful verification before purchase.
  • Initial Cost Consideration: While generally cost-effective in the long run, the upfront cost of genuine parts might be higher than generic alternatives, which could be a consideration for some budget-conscious individuals.

#6 Best Silent

Kohler Genuine Part Gp1083167 Silent Fill Valve Kit

Kohler Genuine Part Gp1083167 Silent Fill Valve Kit For All Kohler Class Five Toilets,12.5" x 3.5" x 3"
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The Kohler Genuine Part Gp1083167 Silent Fill Valve Kit is best for homeowners seeking a quieter and reliable toilet fill valve designed explicitly for Kohler toilets, prioritizing brand compatibility and a more serene bathroom environment.

Have you ever felt caught in a big hurricane with the sound created after you flushed? Or do you think a skyscraper collapsed? There is no one that this noise in the siphon will not disturb, especially when everyone is asleep. Let us introduce you to the best quietest toilet fill valve that cares about your privacy: Kohler Genuine!

A silent valve can be the feature that most users are looking for. So, in our in-depth research, all roads lead us to Kohler. Kohler’s engineers provided silent tank filling with a unique system developed to meet users’ demands. When you press the siphon, you do not hear any sound, and your tank is already full. Fast tank filling is also crucial for a clean toilet seat.

This best silent valve kit has separate inserts to balance the water and money-saving ratio. Thanks to these tips, you can adjust the right amount of water according to your needs with infinite adjustment options. Remember, small savings are tiny but practical steps for your sign needs.

When we examine its structure, we see it is made of plastic. It weighs only 9.6 ounces. Thus, it prevents water from rising to the surface by creating weight in the tank and pressing the siphon repeatedly due to insufficient water. Continuous use of water can cause the valves to fail and leak. However, Kohler’s original parts are under warranty. Thus, you can protect your toilet seat and valve for many years.

Most users are worried about the installation. As a result, equipment may not be of common interest to all of us. But setting up Kohler is pretty simple. You do not need to remove the entire tank to install the valve. You have witnessed that male users, especially, make it a matter of pride to get professional help in repair and repair. Many can fail, but this valve kit can make them feel like superheroes.


  • Silent Fill Feature: The valve effectively reduces noise during the tank refilling process, offering a quieter and more pleasant bathroom experience.
  • Quality Assurance: As a genuine Kohler part, it promises to maintain original product performance and promote longevity, ensuring compatibility and reliability for Kohler toilets.
  • Adjustability: The valve accommodates different tank heights, providing versatility and a more customized fit for various toilet models.
  • Water Conservation: Multiple fill rate inserts are included, allowing users to optimize performance and conserve water according to their needs and preferences.


  • Complex Installation: The installation process can be confusing and challenging due to poorly detailed instructions, particularly for those less experienced with DIY projects.
  • Missing Components: The absence of a new fill tube in the package can be disappointing and inconvenient, requiring users to reuse old parts or purchase additional components.

#7 Best Water-Efficient

HYR460 Hydroright HyrdroRight Universal Water-Saving Toilet Repair Kit

The Danco HYR460 Hydroright Universal Water-Saving Toilet Repair Kit is best for environmentally conscious homeowners who want to upgrade their standard toilets to more water-efficient systems without extensive plumbing modifications.

The Danco HYR460 Hydroright Universal Water-Saving Toilet Repair Kit with Dual Flush Valve was a promising tool for bathroom upgrades. In this review, I’ll share my experience installing and using the Danco HYR460, highlighting its features, benefits, and areas for improvement.

The Danco HYR460 is designed to convert standard toilets into water-efficient dual-flush systems. It’s a part of the green home trend, promising to reduce water bills and contribute to a more sustainable environment. The kit includes a HYR271 Dual Flush Converter and an HC630 HydroClean fill valve.

Unboxing: The product comes well packaged with all necessary components, including a detailed manual. The parts are primarily plastic with a silicone finish, which I found durable yet lightweight.

Installation Process: I approached the installation with a DIY spirit, equipped with basic plumbing knowledge. The instructions are comprehensive, but I found that a careful and patient approach is necessary to avoid missteps. Installation requires no tools and is supposed to be a drop-in replacement for your existing toilet system. However, the process is a bit more complex than advertised, incredibly correctly aligning the dual flush converter. The snapping sounds during installation might be unnerving for those unfamiliar with DIY plumbing work, though I assure you it’s normal.

Efficiency: Once installed, the dual flush system works as promised. The quick flush for liquids and paper reduces water usage, and the full flush effectively handles solids. The option to adjust the amount of water per flush is a thoughtful feature, allowing customization for different needs.

Leak Detection: The kit’s ability to detect leaks is a standout feature. Knowing that the system helps maintain itself is reassuring, signaling any potential water wastage.

Durability: The product has held up well over several months of use. The silicone seal is resistant to chemicals and doesn’t warp, ensuring a long-lasting fit.

Noise: The flush is noticeably quieter than my old system, which is a slight but appreciated improvement.

Savings: My water bill has been reduced, affirming the product’s efficiency claim. The investment feels justified and aligns with my aim of a cost-effective, environmentally friendly home.

Compatibility: The kit is not universally compatible. It’s crucial to check your toilet’s specifications against the product’s requirements before purchasing. I’ve heard from friends that it doesn’t fit some newer or non-standard toilets, which can be a significant inconvenience.

Aesthetic: The external design is functional but not exceptionally stylish. The flush buttons are prominent and might not suit every bathroom’s aesthetic.

The Danco HYR460 is a commendable product for anyone upgrading their toilet to a more water-efficient system. Its performance, once installed, meets the expectations set by its water-saving claims. The initial installation might be challenging for some, but the benefits of post-installation make it worthwhile. As with any home improvement product, compatibility and aesthetics are subjective and should be considered before purchase. My experience has been positive, and I appreciate the reduced water usage and utility bills. The Danco HYR460 offers a practical and effective solution for environmentally and budget-conscious homeowners.


  • Water Efficiency: Its dual flush system significantly reduces water usage. It offers both a quick flush for liquids and a full flush for solids, contributing to environmental sustainability and lower water bills.
  • Leak Detection: The ability to detect leaks ensures the toilet operates efficiently and helps prevent water wastage, potentially saving costs and enhancing its environmental benefits.
  • Adjustability: Users can calibrate the water needed for each flush, allowing for customization based on specific needs and preferences, enhancing the user experience and efficiency.


  • Compatibility Issues: It is not universally compatible with all toilets, particularly newer or non-standard models. Users must check their toilet specifications against the product’s requirements, which may limit its applicability.
  • Aesthetic Intrusiveness: The design and size of the flush buttons may not seamlessly integrate into every bathroom’s decor, potentially impacting the overall aesthetic appeal.

Toilet Valve Buying Guide

The most appropriate installation and a professional toilet system should provide the optimum benefit. Choosing a toilet flush valve is difficult among all the options and thousands of different toilet structures. We have prepared a guide to eliminate all the factors that challenge your decision-making process.

Top Toilet Fill and Flush Valve Models

Toilet Valve Types

1. Toilet Flush Valve Types

The flush valves are the parts inside the toilet tank that carry water to the tank. Depending on the toilet design, different sizes of toilet flush valves are available, ranging from 2 to 4 inches. The most important criterion here is to know the valve you have. Harmonizing the parts you mount on your valve offers better washing options.
You can choose from different types of toilet flush systems and mechanisms.

a. Types of toilet flush systems: The facilities provided by toilet washing systems are pretty high. Although today’s water consumption causes controversy, built-in toilets, unlike waterproof or composting toilets, send tank contents directly from the discharge pipe to the sewer or septic system. You can install the system with many options that will change according to your choice. – Tank Fill Valve Flush System, Flapper-Flush Valve Flush System, Washdown Toilet, Pressure-Assisted Flush System, Gravity Flush System, Double Cyclone Flush System, Dual Flush System, etc.

b. Toilet flush mechanism: Thirst, seen as the biggest problem in the future, caused the need for water-saving. Today, many toilet manufacturers offer products in mechanisms that will give maximum results in a single siphon and reduce water consumption. Some of these mechanisms are programmed to activate the water to clean the wastewater, some to use the waterless, and some to use no extra water. – Standard Toilet Tanks, Tankless Toilets, Dual Flush, etc.

2. Toilet Fill Valve Types

The fill valve is part of the water filling the tank, which opens the water flow while the washing cycle drains the tank and shuts off the water supply after the tank is filled to the proper level. So you can achieve water-saving and fast flow power at the same time. Some of the fill valve types you can use in your home are  Float-less Type Fill Valve Plunger / Piston Type Fill Valve, Diaphragm Type Fill Valve (brass body), Float Cup Type Fill Valve, Diaphragm Type Fill Valve (plastic body), etc.

How to Replace Toilet Flush Valve

The drain valve in the middle of the toilet tank includes the overflow pipe, the tank’s water inlet hole when the toilet is washed, and the rubber tank ball or hook that covers the spot when the tank is full. Keeping the water in the tank is impossible without a broken flush valve. So your leak problem will occur. In such a problem, you need to change the wing. If you do not know what to change, you can change your flush valve with Roger Wakefield:

How To Replace Toilet Fill Valve

The fill valve is the valve that controls the flow of water into the toilet tank. These valves on the left side of your toilet tank connect to the supply pipe, working for a shut-off valve with a tail extending from the bottom of your tank. This section is commonly referred to as ballcock. Toilet fill valves may wear out over time due to continuous use and begin to give you replacement signals. These signals may include reduced water in the tank, leakage, and weakening of the flow power. If you don’t know how to replace your fill valve, Home Repair Tutor can help you:

Frequently Asked Questions

What is a Toilet Fill Valve?

A toilet fill valve is a valve mechanism located inside the toilet tank, typically on the left side. Its primary function is automatically refilling the tank with fresh water from the supply line after a flush.

What is a Toilet Flush Valve?

A toilet flush valve is a self-closing valve designed to release a large volume of water when activated to flush the toilet bowl. It is typically located inside the toilet tank or the body of a urinal.

How often should I replace my toilet fill valve?

It’s generally recommended to replace toilet fill valves every five years or so, even if they seem to be working fine. The internal components can degrade over time, leading to leaks, inefficient flushing, and other issues.

How do I adjust the water level on my new fill valve?

Most fill valves have an adjustment screw or clip that moves the float cup or shaft up/down to set the tank water level. Refer to the manufacturer’s instructions, but generally, turning the screw clockwise raises the water level.

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David Mason is a home improvement expert with over ten years of hands-on experience improving homes. David provides a wealth of practical, real-world insights on home improvement projects. His expertise spans home renovation, including kitchen and bath remodels, flooring, roofing, landscaping, room additions, plumbing, electrical work, and more.

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