11 Best Replacement Toilet Fill Valves In 2024, With Reviews

Written by Sakshi John
Edited by Wedetso Chirhah
Fact-checked by Pratibha Bagdy
Last Updated on
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If your car needs an engine to run, your toilet needs a toilet fill valve to function. It can be terrible if your toilet tank does not refill itself. Hence, test out the best toilet fill valve to avoid putting yourself in unpleasant circumstances.

Although small in size, it has a crucial role in the functioning of a toilet tank. A leaky or overflowing cistern indicates it is time to change the fill valve. Although there is no shortage of fill valves in the market, choosing the right fill valve is crucial.

Read on to know more about the various types of time-tested toilet fill valves and pick the right product from this comprehensive list.

Types Of Toilet Fill Valves

  • Ballcock toilet fill valves

The ballcock fill valve is one of the oldest types of toilet fill valves. This vintage-style fill valve consists of a ball and rod design. The ball or balloon is made up of either plastic or thin metal and goes up and down depending upon the water level inside the cistern. As soon as the ball is pushed upwards, indicating that the toilet tank is full, the fill valve stops taking in water. While these work well, they are large, heavy, and based on old technology.

  • Float cup toilet fill valves

This is an improvement in design over the tried and tested old-fashioned ball and rod fill valve. It is designed to fit numerous types of gravity-flush toilets that are floor-mounted. These float cup-type flush valves are a replacement for ballcock fill valves. Instead of a heavy, large ball, this system incorporates a float cup that drops along with a drop in the water level. As soon as the water level in the tank lowers, the float cup drops, signaling the fill valve to refill the water in the tank. As the water level rises to the predetermined shutoff level, the float cup also rises and signals the fill valve to shut the supply of water.

  • Pressure-activated and anti-siphon fill valves

This style of fill valve is quite different from both the ballcock and float cup designs. While it looks quite similar to gravity-fed fill valves, it deviates from them, in that it doesn’t have a cup or balloon to control the filling of water in the toilet tank. These fill valves are generally small in size and sit at the bottom of the tank. However, once spoilt, they need to be replaced. Anti-siphon valves are pressure-activated fill valves that have been tested to prevent water from being sucked back into the water supply when there is low water pressure.

  • Dual-flush fill mechanics

These fill valves are quite similar to standard fill valves with the main difference being that they come with a switch that allows dual operation. In simple terms, these fill valves have a switch that allows one to alternate between a full flush and a half flush. This is beneficial in saving water during situations that may not require a full flush. Do bear in mind that standard toilets with a single flush will not support dual flush fill valves.

Since you’ve taken the time to orient yourself with the different types of fill valves, it’s time that you have a look at our list of the 11 best toilet fill valves.

11 Best Toilet Fill Valves

1. Best Quick Installation:Korky 528 QuietFill Toilet Fill Valve


The new and improved technology implemented by Korky replaces old and low-flow toilet fill valves that not only take time to fill but are also worn down and ineffective. This universal toilet fill valve is made of plastic and has been designed to easily fit both 1 and 2-piece water closets. It is a quick solution to leaky and running cisterns and also fills large cisterns in no time. Owing to its user-friendly design and accessories included for setup, this fill valve has emerged as a popular choice among consumers. The company has slapped a 5-year warranty on this product. Have a look at this video to learn more about this quiet fill valve.

Material: ‎Plastic | Color: ‎Black | Product Dimensions: ‎4 x 2.25 x 7.75 inches | Item Weight: ‎8.8 ounces


  • Quiet operation
  • Easy installation
  • Universal design
  • An innovative twist-lock adjustment


  • It may not be suitable for use where the water is extremely cold.

Our Reviewer's Experience

"With this toilet valve, float and water height adjustments no longer feel like a hassle. Its installation was also tool-free and the noise levels have also been negligible. Overall, its been a significant upgrade from my outdated valve."

protip_icon Did you know?
You can use this fill valve in large and compact toilet tanks with improvised technology without worrying about ballock technology.

Why We Think It's Worth Buying

The product has received 6,090 positive Amazon reviews from its users, stating its numerous benefits.

2. Best Adjustable Height:Kohler Silent Fill Toilet Valve Kit

Kohler Silent Fill Toilet Valve Kit

This toilet flush valve with genuine Kohler parts is designed for smooth operation. It fits all Kohler class 5 toilet and is crafted from hard plastic. You can now replace your old fill valve with an OEM Kohler part to ensure optimal performance. The cap comes in 5 smart colors like black, silver, white, red, and blue. It is important to keep in mind the shank color and model number while purchasing the fill valve. The silent fill feature allows the cistern to fill without any noise. To avoid scratches on the well-designed, superior-quality plastic, use soft material or sponge to clean the surface. This toilet fill valve kit comes with a fill hose, valves, inserts, and assembly hardware. Here is an informative video that tells you more about the product.

Material: ‎Plastic | Color: ‎Black | Product Dimensions: ‎11.75 x 3.75 x 3 inches | Item Weight: ‎8.8 ounces


  • Adjustable height
  • Easy-install fill valve
  • Water-saving
  • Quick filling
  • Ideal for standard toilets


  • Might get clogged with sediments

My Personal Experience

"I have always been a fan of Kohler’s products, and this valve is no different. While I would have liked the instructions to be more comprehensive, the installation was quick. It instantly solved the running toilet issue and has been working great."

3. Best Universal Fill Valve:Toto Adjustable Toilet Fill Valve

The TOTO assembly fill valve boasts a robust exterior that is made from high-quality plastic. It has a cutting ring inlet connection and a G-connector for an outlet connection. With its adjustable height and compact layout, it fits many toilet tanks. The height of the fill valve can be set between 7.75 inches and 13.5 inches in any TOTO cistern. This tried-and-tested toilet valve replacement set includes a cone washer with a nut, refill tube, clamp, and valve. For more information about the product, click this video.

Material: ‎Plastic | Color: ‎Unfinish | Product Dimensions: ‎10.25 x 4 x 2.25 inches | Item Weight: ‎5.3 ounces


  • DIY installation
  • Flexible height
  • Universal design
  • Standard inlet connection


  • May not refill the tank very quickly

Our Reviewer's Experience

"While a tad louder during tank refills, this valve solved my toilet’s slow-fill issue without professional help. Besides, the included adapters and adjustable water tank height were quite handy in making installation a breeze. Overall, it has been a decent upgrade from my old valve."

Korky 528 QuietFill Toilet Fill Valve
Best Quick Installation
Kohler Silent Fill Toilet Valve Kit
Best Adjustable Height
TOTO Adjustable Toilet Fill Valve
Best Universal Fill Valve
Material ‎Plastic ‎Plastic ‎Plastic
Color ‎Black ‎Black ‎Unfinish
Dimensions ‎4 x 2.25 x 7.75 inches ‎11.75 x 3.75 x 3 inches ‎10.25 x 4 x 2.25 inches
Weight ‎8.8 ounces ‎8.8 ounces ‎5.3 ounces

4. Best Single Flush:Danco 80816 Toilet Tank Fill Valve

Restoration of a leaky or old toilet tank is made easy with the Danco toilet repair kit. The toilet fill valve kit consists of a flapper with an adapter, float with a rod, ballcock with refill tube, and spring to install new life into your old cistern. The total height of the brass rod once threaded through the fill valve and float sums to 11.75 inches. The toilet flapper is designed to fit 2-inch toilet flush valves. The overall height of the fill valve is 8.5 inches. This reliable product is available for purchase in 2 shades of white.

Material: ‎Plastic, Rubber | Color: ‎White | Product Dimensions: ‎4 x 7.4 x 13 inches | Item Weight: ‎11.7 ounces


  • Durable fill valve with plastic design
  • Universal fit
  • Single-flush application
  • Easy installation


  • The float rod might be too long for some toilet tank

Our Reviewer's Experience

"Installing this valve required extensive reading of the instructional manual but the process was pretty quick. Moreover, even after being in use for a few months, the valve has been serving its purpose well."

Why We Think It's Worth Buying

Almost 3,178 happy users have mentioned the value and quality of this product.

5. Best With Twist-Lock Adjustment: Korky 528MP QuietFill Platinum Fill Valve

Korky 528MP QuietFill Platinum Fill Valve Image: Korky
Now 17% Off

The Korky toilet valve is designed to replace ballcocks and worn-down valves for various one-piece and two-piece toilets. The universal toilet fill valve has a twist-lock adjustment that makes it easy to install and ensures your water closet runs smoothly. This valve is also adjustable from 7.75 inches to 13.5 inches to fit most toilets. The set comes complete with a refill tube, a metal refill tube clip, a mounting nut, a cone washer, a refill adjuster, a coupling nut, and a tamper-proof key.

Material: ‎Plastic | Color: ‎Black | Product Dimensions: ‎3.25 x 5.5 x 14 inches | Item Weight: ‎8 ounces


  • Universal fit
  • Fixes leaking and slow-refilling toilets
  • Refill adjuster delivers an accurate amount of water
  • Includes installation instructions


  • May be a bit noisy

Our Reviewer's Experience

"This valve has not only improved the water refill rate but its adjustable water fill restrictor has also helped me reduce my water bills. It's a bit noisier than my older one but the overall functionality has also been better. Hence, I would recommend it."

6. Best Quick Refill:Next By Danco HC660 Toilet Flush Valve

Constructed with superior-quality acetal and polypropylene, Next by Danco is an advanced toilet fill valve kit with an adjustable height of 11 to 13.8 inches. A built-in mini-valve to adjust water levels and an audible alert to notify a leak in the cistern ensure that no water is wasted. As per reviews, this self-cleaning fill valve is equipped with powerful jets that stir up dirt on the tank bed, allowing it to be flushed while keeping the cistern clean. Repairing a tank with this adjustable toilet valve is made easy thanks to its float lock that shuts off the water inside the tank.

Material: ‎Acetal, Polypropylene | Color: ‎Blue White | Item Weight: ‎12.8 ounces


  • Quick refill
  • Automatic tank cleaning
  • Tool-free installation
  • Full flush efficiency


  • It may get a little noisy.

Our Reviewer's Experience

"This valve significantly sped up the toilet refill process, and its durable build has withstood the test of time. It is slightly noisy but features such as a hose for preventing sediment buildup and the self-cleaning design have made it my preferred option."

Why We Think It's Worth Buying

With 1,796 positive reviews on Amazon, this product has become a bestseller.

protip_icon Quick tip
Clean the clogs regularly and remove grime and mineral build-up to increase the water pressure. Further, block any leakages that cause water wastage.

7. Best Lightweight:American Standard Fluid Fill Valve

American Standard Fluid Fill Valve Image: American Standard

This well-crafted fill valve by American Standard is made of hard plastic that will stand the test of time. The fill valve is relatively lightweight and compact. Owing to its 10-inch height, it will easily fit in small as well as large-sized cisterns. It is designed to refill water in your cistern as quickly as possible without resulting in any leaks. The company bundles with the unit all necessary accessories like the shank washer, refill tube, coupling washer, coupling nuts, refill tube, and refill clips.

Material: ‎Plastic | Color: ‎Black | Product Dimensions: ‎3 x 3 x 10 inches | Item Weight: ‎0.16 ounces


  • Fits most toilets
  • Quick installation
  • High water refill rate
  • Adjustable design


  • It may get clogged if there is high mineral content in the water.

Our Reviewer's Experience

"This toilet valve has effectively resolved slow-fill and leakage issues. I am also pleased with the detailed instructions, which made the installation a straightforward DIY project. Just remember to remove any debris to ensure optimal functioning."

8. Best Minimal Noise:Fluidmaster 400H-002 High-Performance Fill Valve

This trusted fill valve by Fluidmaster is a work of sheer brilliance. The fill valve is built from plastic and designed to operate efficiently and effectively while producing minimum noise. The company has ingeniously designed the fill valve with a quick height adjustment between 9 and 14 inches. This makes it easy to fit in almost all cisterns. This fill valve is a perfect replacement for noisy, old, or leaky fill valves. Included with the fill valve are the required accessories for installation and a step-by-step instructional manual. The company provides a 7-year warranty of its Fluidmaster 400H-002 model.

Material: ‎Plastic | Color: ‎Multicolor | Product Dimensions: ‎3.35 x 4.33 x 13.19 inches | Item Weight: ‎9.6 ounces


  • Adjustable water level dials
  • 2x greater bowl refill
  • Powerful flush
  • Universal design


  • Some may find that the quality of the rubber washer is not up to the mark.

Our Reviewer's Experience

"As someone replacing the valve for the first time, the precise installation instructions were much appreciated. While getting the tank level just right required some effort, the overall functioning of the valve has been seamless."

protip_icon Do remember
A universal fill valve is suitable for all types of flush tanks. However, to ensure the right fit, you can measure the size of the flush valve.

9. Best Easy-To-Install: WDI Technology Lowe’s AquaSource Original Fill Valve

WDI Technology Lowe’s AquaSource Original Fill Valve Image: Wdi Technology Co Ltd

AquaSource Original toilet fill valve by Lowe’s is a good fit for most AquaSource toilet models and can be installed without needing adjustments. The set includes a fixed-height fill valve, cone washer, refill tube, and coupling nut. This single flush valve is easy to install, and it comes with phenomenal build quality that can withstand sediment and debris, offering long-lasting usage.

Item Weight: ‎6.7 ounces


  • Easy and quick installation
  • Includes installation instructions
  • Operates quietly
  • Fixes leaky toilets


  • Filling tube could be a bit short

My Personal Experience

"Although snug fitting, this valve has been handy for keeping my toilet’s water pressure in check. Its operation is also noiseless, and its user-friendly design makes adjusting the water pressure hassle-free."

10. Best Water-Saving: R&T A1320 Toilet Fill Valve

R&T’s high-performance water-saving flush valve by R&T helps fix running, leaking, and low-slow toilets. It offers a quick and quiet tank filling and delivers the correct amount of water to the tank. This saves water, ensures accurate performance, and decreases your water bill. Its quick-locking nut allows easy installation and a secure seal without any tools. You can also adjust the float height and level after installation.

Item Weight: ‎12 ounces


  • Adjustable height between 9.2 inches and 13 inches
  • Universal fit
  • Easy and convenient to operate
  • Anti-siphon valve prevents sucking sewage back
  • Durable and corrosion-resistant material


  • Directions may be a bit difficult to understand

My Personal Experience

"Installing it required additional tools, but the practical design and quiet refill have been impressive. There has also been a noticeable difference in my toilet's overall functionality since I installed this valve. Hence, it gets my approval."

11. Best Space-Saving:Plumb Pak Anti-Siphon Toilet Valve

Plumb Pak Anti-Siphon Toilet Valve

*The prices provided in this article are based on the latest available information. However, they may vary due to changes in pricing by the seller and/or promotional offers.

The flush valve by Plumb Pak is designed to fit standard 2-piece toilets. Its compact size makes an ideal replacement for inefficient fill valves that are using outdated technology like ballcocks. The plastic shell is connected to the water inlet pipe to allow for continuous and seamless water flow into the cistern. While this may not have all the bells and whistles like other fill valves, it is easy to install, use, and maintain

Material: ‎Plastic | Product Dimensions: ‎13.8 x 15.58 x 18.55 inches | Item Weight: ‎4.8 ounces


  • Space-saving layout
  • Low-maintenance fill valve
  • Gravity controlled
  • Water level control knob
  • Quiet operation


  • The flush pressure might be a little less.

Our Reviewer's Experience

"This fill valve was pretty easy to install—no tools, just a straightforward setup. It is much quieter than my previous one, and the adjustability for water levels is a helpful plus.However, I recommend checking your toilet's size to ensure the correct fit."

Now that you’ve had a look at our list of the 11 best fill valves, it’s time to determine the type of fill valve needed for the toilet tank and look for a compatible one. Lucky for you, we’ve outlined some of the main considerations to bear in mind when choosing a toilet fill valve.

How To Choose The Best Toilet Fill Valve?

  • Type and model

The kind of fill valve that you will need will be determined by the toilet tank you have. Replacing your fill valve includes identifying the old one to know which type of fill valve to purchase. While there are different types of flush valves to choose from, you might be limited by your toilet tank. So, do check carefully before purchasing a toilet fill tube/valve.

  • Material

While plastic might not always be as durable as metal, when it comes to a flush valve, it is the better choice. Plastic fill valves are more durable than their metal counterparts because they are not subject to rust and corrosion. Corrosion of metal fill valves often leads to leaks and malfunction, so it’s best to choose corrosion-resistant fill valves.

  • Noise level

There is a considerable amount of noise while emptying and refilling the toilet tank and that can be quite annoying. If noise bothers you to the extent and gets on your nerves, it is advisable to purchase a fill valve that provides quiet operation.

  • Fill and flush rate

While it may seem like the only factor to consider would be how fast it fills and flush, it isn’t so. The fill valve of the toilet tank depends on the inlet through which the water passes. The inlet of the toilet flush valve should be able to handle the water pressure that the fill valve supports for the valve to be most effective. The flush rate of the fill valve is directly related to the toilet’s flush cycle. You must choose one that matches the flush cycle of your toilet. Most older toilets support a 2-inch flush valve, while most modern ones require a 3 or 4-inch flush valve.

  • Other features

Features to look out for include whether the flush valve has an adjustable height, water-saving capabilities, and ease of installation. Having a height-adjustable fill valve ensures that you will eliminate the size of your cistern as a restriction. You can also look for fill valves with adjustable flappers and tool-free installation to avoid the need for a plumber and the ability to switch between half and full flush to save water.

Frequently Asked Questions

1. Can a toilet fill valve be repaired?

The answer to this lies in the model of the fill valve used in the toilet tank. Certain brands like Fluidmaster allow for quick replacement by replacing the seal inside the unit. However, other brands may not be so repair-friendly. If the toilet flush valve cannot be repaired, the only option left would be to replace the entire unit.

2. How do I clean a toilet flush valve?

Fill valves often get clogged with debris and sediments. Thankfully, cleaning them is easy. Once the cap of the fill valve is removed, carefully inspect for debris that might be stuck in and around the body of the fill valve. Use an inverted mug over the opened fill valve and turn on the water supply. This will force the water to circulate through the body of the fill valve and release the debris or sediments. Repeat this process at least twice to clean the fill valve.

3. How long do toilet fill valves last?

The longevity of a toilet fill valve depends on its material and how often you use it. Plastic toilet fill valves are more durable and last longer than the metal ones. Typically, a well-used toilet fill valve will last up to five years.

4. How high should a toilet fill valve be?

Buying a toilet fill valve with an adjustable height is an ideal choice. However, in any situation, the critical level mark (CL) of the toilet fill valve should be one inch above the top of the overflow pipe.

5. How do I know if my fill valve is bad?

The first sign that your fill valve has gone bad is an ineffective flush and certain strange sounds coming out of it because of the unusually high amount of water inflow from the toilet fill valve and water outflow from the flush valve.

6. Is there a way to adjust the fill speed on a toilet?

To adjust the fill speed of your toilet, you can buy a toilet fill valve with an adjustable speed, or you can adjust it by bending the float rod upwards to increase the water filling speed and downwards to decrease its speed in the case of ballcock toilet fill valves.

Why Trust MomJunction?

We have compiled this list of the best toilet fill valves while keeping your quality parameters and needs in mind. Numerous websites and product reviews have been analyzed to ensure you are introduced to high-efficiency toilet fill valves for smoothly functioning toilets. This article provides the necessary details about their features and a buying guide to help you choose the right one.

The Bottom Line

A toilet valve is an integral part of any toilet system that releases the water from the toilet tank into the toilet bowl. If this function isn’t performed efficiently, you can wake up to a flooded toilet sink and bathroom. Hence, to avoid such mess, it is recommended that you purchase the best replacement toilet fill valves, such as the user-friendly Korky 528 QuietFill Toilet Fill Valve, the height-adjustable Kohler Silent Fill Toilet Valve Kit, or the innovative Fluidmaster 400H-002 High-Performance Fill Valve. Moreover, ensure that it is made of durable materials and is rust and corrosion-resistant. Also, identify the type and model so it fits your toilet system effortlessly and comes with additional features like half and full flush and more for easy use.

Infographic: How To Replace Toilet Fill Valves?

The toilet fill valve is a crucial component that regulates water flow to refill the tank after flushing. Replacing the fill valve may be necessary if you encounter problems such as an incomplete filling, strange noises, or corrosion. The infographic explains how to replace the fill valve easily and accurately.

Steps Involved In Replacing A Toilet Fill Valve (infographic)

Illustration: The Bridal Box Design Team

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Pratibha holds a master's degree in English from Madras University and has qualified UGC-NET. A bookworm from a young age, she devours books and digital humanities to nourish her writing projects. Pratibha began her writing career in 2018 and has experience writing formal, informal, and technical content.

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