Quietest Toilet Fill Valve 2024: Reviews and Buying Guide

Quietest Toilet Fill Valve

Many homeowners do not give much thought to certain things such as the toilet fill valve.

The valve is found in the toilet tank and is used to allow the tank to fill to the correct level.

It does this by letting water flow into the tank after a flush, detecting the level and stopping the flow once the water gets to a certain level.

Toilet fill valves are available in different designs and variations. This makes it difficult to settle for one.

Choosing the right valve is important because the wrong valve could end up costing you so much more in terms of replacement costs and water bills, and sanity in the case of a noisy one.

We have come up with a list of a number of things that you need to know before purchasing a toilet fill valve.

To help make the decision easier for you, we have included our top 5 picks of the best quiet toilet fill valves. Be sure to check them out.




Fluidmaster Toilet Fill Valve

  • Comes with a flapper repair kit
  • Leak-preventing design
  • For tanks >3.5 gallons per flush

Kohler GP1138930 Universal Fill Valve Kit

  • Silent Fill technology
  • Multiple fill rate to conserve water
  • Adjustable and adaptable

American Standard Universal Fill Valve

  • Fast refill rate
  • Includes coupling nuts, a lock, a refill tube, and a washer
  • Handle volumes of up to 7 gallons

Korky 528 QuietFill Universal Toilet Fill Valve

  • Fast refill and silent
  • Adjusts from 7.75'' to 13.5''
  • Made in America

TOTO TSU99 A.X Universal Fill Valve

  • Ecofriendly and self-cleaning
  • Adjustable flow rate and height
  • Best for TOTO toilet tanks
Quietest Toilet Fill Valve

Quietest Toilet Fill Valves 2021

If you are looking for a fix for the noisy and running toilet in your house, then this kit could be the solution to your problem.

The kit comes with the iconic 400A toilet fill valve from Fluidmaster, which is considered to be one of the most popular valves in the world. The valve comes with an anti-siphon design that prevents any water leaks from the tank.

Included in the kit as well is a sturdy frame flapper. With this, you can align the tank.

The flapper helps to achieve a consistent and powerful flush every single time. It is also quite reliable and is made of corrosion-resistant materials.

The valve is available for use in tanks that hold 3.5 gallons per flush or even larger. The solid frame build makes the kit more durable and you won’t have to keep replacing the valve every so often.

A bonus advantage for this kit is that it is quite easy to install and use.

Within 10 minutes, you can have the valve installed and ready to use. It also comes with a 7-year warranty which is frankly a bonus point on its part.

The Kohler Valve kit is a favorite for many, especially because it is an adjustable valve and is made to be adaptable to all types of toilets.

 Just like the Fluidmaster valve above, Kohler is a long-trusted brand and its valves are well known for their durability and effective performance.

The valve is fully adjustable and so is the fluid flow. This makes the system more efficient when it comes to saving water and hence reduce energy bills.

To accommodate standard cleaning requirements, the length of the valve can be adjusted to up to around 13 inches.

Because it is mainly made of high duty plastics, the Kohler valve tends to be more durable than its counterparts.

The refill rate on this valve is quite impressive. Within 40 seconds, the tank can be completely full with significantly less noise made.

This rate is quite high as compared to other valves which makes the waiting time much shorter.

The kit does not come with an instruction’s manual. However, all you need is a few minutes to figure out what goes where and you will have the valve installed in a short while.

Although this kit is a bit pricier than the others on the list, its efficiency makes it worth the price.

The kit comes with a couple of accessories for your toilet tank.

The kit includes a Fluidmaster 400A fill valve, coupling nuts, a lock, a refill tube, and a washer as well.

The valve comes with an anti-siphon feature that helps to reduce leaks as well as prevent contamination. The height can be adjusted to 14 inches to fit the specifications of your toilet.

Unlike standard toilet fill valves, this valve offers a quiet and fast refill. The refill rate is about two times as much as that of other models making the waiting time short.

We especially love the fact that the valve is universal. It is made to fit most of the American Standard toilets and because all the accessories are adjustable, you can get it to fit your toilet tank perfectly.

Given that the valve can handle volumes of up to 7 gallons, it really is the best one out there.

The kit also includes installation instructions that should help you set up the valve in a matter of minutes.

Korky 528T comes with newer and more efficient technology, making it one of the best fill valves there are.

The valve is made to specifically tackle three common toilet fill valves; slow refill, noise and water leaks. It is able to refill the tank at a fast rate and does so while being incredibly silent.

One of the best things about this valve is that the installation is very easy and straightforward. 

Thanks to the twist-lock mechanism that the valve uses, no tools are needed during the installation process.

It is also quite impressive how the valve can handle large volumes of water. This feature makes it possible for you to replace the valve while the tank is still intact.

The Korky 528T has a universal design and is fit to work on most types of toilets given that it is easily adjustable.

The valve also comes with a strainer that traps any sediments in the water. This makes the valve more durable.

While the performance on this valve kit is quite commendable, it is mainly considered a selfish design. This is because it was designed with the TOTO flush tank models in mind and will not work for other brands. 

However, if your toilet tank is compatible, this valve is quite an asset to have.

It comes with some cool features such as the EcoPower and the Hydrotect that make it eco-friendly.

EcoPower feature offers better hygiene and a hands-off experience while the Hydrotect feature offers self-cleaning and hence great anti-microbial protection.

While it is made for two-piece toilets, it can also be used on one-piece tanks thanks to the adjustment features.

When used on a two-piece toilet, the valve gives you the option of adjusting both the height and the flow rate as well.

To save on electricity, the valve uses the power that is generated from the moving water.

For efficiency, the valve aerates the flow of the water and also has a built-in sensor that prevents the water from running once the tank is full.

The valve comes in three different styles so you can choose one that suits your needs.

These styles are traditional, transitional and contemporary. A manual is included in the kit to make installation easier.

What to consider when buying a Quiet Toilet Fill Valve?

When looking for a toilet fill valve to buy, there are a number of things that you need to consider. Here are a few tips to have in mind before purchasing a valve.

  • Measure the diameter of the hole in the tank that will receive the valve. It is recommended that this diameter is between 16-50 mm.
  • Measure the depth of the tank by using a tape measure
  • Although the standard diameter for the outflow hole is 60 mm, it is advisable that you measure this as well.
  • Determine whether the valve is located underneath the tank or on the side. 

Now that you know what you need to do before purchasing a toilet fill valve, how do you choose the best?

The available valves differ in both size and price. Here are some of the things that you need to check before settling for a particular valve.


Newer models of toilet valves are much quieter. When purchasing a toilet fill valve, be sure to check the decibel levels.

A noisy valve can be a distraction especially if the toilet is located near the living room.


Given that the toilet valves are available in different sizes, it is possible that you may buy a valve that is not compatible with the system in your toilet.

For this reason, it is important that you take the measurements of the valve hole beforehand.

Refill rate

If the refill rate of the toilet valve is high, it means that you will only wait a short while for the tank to fill up.

Leak-proof seal

Consider getting a toilet fill valve that will allow you to save on the amount of water that you use.

Be sure that the seal on the valve is leak-proof. You can even incorporate some other water-saving features such as a leak detection system and adjustable water volume.

Guide for Replacing the Toilet Fill Valve

Once you have the purchased the valve, you are going to need to replace it. So, how do you go about changing the valve?

Here are some tips to help you with that.

1. Drain the tank

You obviously cannot replace the valve with the tank full of water. Drain the water in the tank and use a sponge to dry it off.

To remove the valve, remove the gasket and loosen the nut underneath. Proceed to clean the sides and remove any debris present.

2. Replace the valve

Take note of how the old valve was placed as your new one will go in the same way.

Direct the valve through the hole and tighten it enough. Tightening too much may end up breaking the tank.

Be sure to check the height of the tube. Allow for at least one inch below the hole where the lever is mounted.

Replace the rubber gasket and use screws to hold it in position. Ensure the screws are tight so as to provide a perfect seal and avoid any leaks.

3. Test for leaks

Once you have successfully installed the valve, flush the toilet a couple of times to ensure that there are no leaks.

In case of any, check all the connections and tighten them.

On the Quietest Toilet Fill Valve

Toilet fill valves come in a variety of sizes and types. This makes it difficult to settle for one when you are in the market.

Although all the fill valves in our list are quite efficient, the Kohler Universal Fill Valve Kit stood out for us. This is mainly because of the fact that it is adjustable and is known to fit in most toilets regardless of the type.

It also comes with impressive water-saving features and its durability is also quite commendable. We especially love that it is quite affordable given its efficiency and high performance. 

If you are looking for a toilet fill valve replacement, we suggest that you start by looking at the ones featured in this list.

You are sure to find something that works for you and you will not regret it.

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