Best Toilet Fill Valve and Flush Valve: In Depth Reviews and Buying Guide

If you are here, it means you most likely have a toilet valve problem. It is pretty common because the valves are the first to go. We use the toilet several times a day, which can put a lot of stress on the filling valves. This requires them to be top quality in order to withstand the daily attrition and, unfortunately, not all of them are. I have placed this review just for you so that you can find the best toilet fill valve options without any hassle.

In addition:

  • How to choose the best one?
  • What are the benefits?
  • How to replace and clean it?

Without further ado, let’s jump right in!


Best Toilet Fill Valve in 2020 Reviews

1. Fluidmaster 400CRP14 – Toilet Fill Valve and Flapper KitToilet Fill Valve and Flapper Kit

Thanks to its highly innovative design and proficiency, the Fluid 400CRP14 Toilet Fill Valve is perfect for your bathroom. It has been made to cover the most common toilet problems with extreme effectiveness.

Its universal design is made to accommodate all toilet sizes and it is very easy to install and use. This valve can be easily adjusted between 9” and 14”, covering most of the toilet requirements.

At the same time, the flapper is even compatible with 2″ flush valves, making for a complete installation kit. Aside from its top-notch design and durability, the Fluidmaster can be installed in less than ten minutes.

It will solve and prevent leaky flappers and broken or cracked fill valves for a long time after installment. It is because of the solid, corrosion resistant frame and the high-quality material used in its construction. The optimized performance and the quality of the design make for one impressive toilet kit.

With a reputation that spreads over 90 countries, the Fluidmaster, combined with the 2” toilet flapper repair kit, make for one impressive option. It will keep your toilet functioning in peak condition for longer and will quickly solve and prevent any problems that may arrive.


2. Fluidmaster 400AH – High Performance Toilet Fill ValveHigh Performance Toilet Fill Valve

This Fluidmaster is probably one of the most powerful fill valves currently available. The PerforMAX design makes it incredibly easy to install, it fits most of the toilet models available and it has an adjustable height, between 10” and 15”.

The same PerforMAX technology is used to pump the refill rate to 2 times greater, which saves time and, ultimately, money. It comes with an adjustable roller-clamp to control the water volume and it is superior to any outdated, noisy filling valves you might have. It is all about effectiveness and innovation and Fluidmaster 400AH nails them both.

And the fact that it is incredibly silent is probably one of its greatest assets. This great toilet tool is the finest fill valve for high pressure flushing that keeps the sound to a minimum. It is, by all standards, among the most effective toilet fill valves money can buy.

It delivers high-volume water filling, it is robust and solid and it is compatible with most of the best toilet flushing system. As long as you avoid excessive toilet bowl filling, the PerforMAX technology guarantees for an optimum efficiency. Fluidmaster 400AH is the king of its kind and for good reasons.


3. Kohler GP1083167 – Genuine Fill Valve Kit Genuine Fill Valve Kit

Another universal fill valve is offered to us by Kohler, one of the largest manufacturers in the world. The Kohler Genuine Part GP1083167 Fill Valve Kit is made for all types of toilets.

Fully adjustable and genuinely innovative, the Kohler fill valve looks and feels original and effective. It allows for a full refill of the toilet tank in less than 40 seconds and it is extremely easy to install. The overall impression of this fill valve is pristine.

Its simplicity is only matched by its durability, as Kohler is mostly defined by longevity above everything else. The fact that it cuts down on water usage, while significantly lowering the filling time is what makes this piece a must-have for your personal toilet.

This is the absolute best toilet fill valve from Kohler, combining the material durability with the innovative and efficiency-oriented design. Kohler Genuine Part fill valve definitely lives up to the expectations.


4. Korky 528T – Replacement Fill Valve Replacement Fill Valve

Just as the name suggests, Korky 528T fill valve has been originally designed to completely replace Power Gravity Toilets, as well as the G-Max technology. And it certainly succeeded in doing so. Korky is one of the best fill valve options for hard water.

It requires no tools for installation, it is extremely user friendly and highly effective. It comes with twist-lock mechanisms that make the installation process that much easier and it comes with all the necessary parts at once.

It is designed for most types of toilets and it manages to take things to a new level. Slow-refilling toilet valves are now a thing of the past, as the new addition to the bunch takes things up a notch.

Aside from delivering higher volumes of water, Korky is also incredibly silent, compared to its older counterparts. The solid construction material only adds to the general impression and the design is simple and elegant. Korky 528T fill valve is one of the best additions to everyone’s bathrooms.

A must-have tool to increase your toilet’s efficiency by tenfold.


5. Next by Danco Hydro Clean HC660 – Water Saving Toilet Fill Valve Water Saving Toilet Fill Valve

The HC660 HydroClean Tube is the ultimate toilet fill valve. It represents the epitome of innovation and efficiency, as it takes things to a level rarely seen with other brands.

This piece contains a mini-valve to detect and react to even the tiniest water leaks automatically. On top of that, you can easily adjust it to deliver the amount of water you need with each flush. A water-saving mechanism highly valued among users.

HydroClean can be adjusted to heights between 11” and 13.8” and it can be installed very easily. It is also extremely useful in cleaning the tank regularly, in order to accommodate the standard cleaning requirements.

It refills a lot quicker than other similar fill valves, which reduces the waiting time considerably, it is less loud and overall more effective than previous versions.

It is robust, resistant and it does its job perfectly.


Best Toilet Flush Valve 2020 Reviews

1. Fluidmaster – Flush Valve Kit Flush Valve Kit

Good quality flush valves are pretty much essential for your toilets in order to get longer service life. Fluidmaster flush valve is made to fulfill that purpose.

The kit includes an adjustable flapper with microban, optimized for all types of toilets. The installation process is fairly easy, which means you don’t have to be an expert in the field. Fluidmaster can replace any 2” flush valve and it is its quality that will ultimately get to you.

The piece comes with a solid frame, a sleek design and an overall amazing profile. It can save you a lot of money since it stops any leaks from day one. One you must have.


2. Pfister 9740420 – Pressure Balanced Valve Pressure Balanced Valve

The pressured cartridge valve from Pfister is not only the best, but also one of the most innovative. And the innovative part refers both to its look and to its functionality. The Pfister 9740420 is a Pfister trademark piece, with an amazing display of useful features.

It is compatible with the VB8 and JV8 rough in valves and it comes with a ceramic disc for advanced outcomes. The build-up is solid and the visual design is quite satisfying, giving the impression of quality and attention to details.

There are few toilet flush valves that are more optimized and effective than the Pfister pressure valve cartridge and for good reasons. For outstanding quality and durability, this is what you need.


3. Kohler 87998 – Genuine Part Flush Valve Genuine Part Flush Valve

Kohler 87998 is one solid flush valve, coming with the toilet flush flapper you can get, all in the same kit. Its universal compatibility makes it highly desirable among consumers and that is not the only reason.

The material used is well finished and solid, defining class A quality with every aspect of it. Its longevity and quality of construction are Kohler trademark features that grow bigger by the day. Kohler 87998 is a small unit that can successfully meet all the toilet requirements.

If what you are looking for is top quality for affordable prices, then this is the way to go. Nothing beats Kohler in that regard. In the end, it all comes down to making the best choice.


4. American Standard 047107-0070A  – Flush Valve AssemblyFlush Valve Assembly

I always rely on American Standard flush valve because it is manufactured with high quality materials. Besides its robust built this flush valve is also very efficient that saves you water in the long run.

If there is anything that matters when it comes to flush valves, then that is quality. Quality makes for everything and this flush valve doesn’t lack it. The hard composition is only matched by its superior performance, making for one of the best piece money can buy.

Being engineered and constructed by professionals, American Standard  lives up to some of the highest standards in the industry. No matter how you’d look at it, it is worth every penny.


5. American Standard 7381.125#400.0070A – Universal Flush ValveUniversal Flush Valve

This is another top-notch kit, embodying the best the industry has to offer. The optimized design and the thorough build make for quite an impressive piece. The American standard fill valve is one to take things to the next level.

It has the water control feature in place and it comes with a coupling washer and a refill tube, along with its clip in the package. Being universal, the American Standard fill valve fits almost all toilet requirements.

Add to all these pros the fact that the material is high-quality, made to last and you should quickly get the bigger picture. This piece has no minuses to talk about which, in and of itself, is quite impressive. Definitely worth it.

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Buying Guide of Toilet Fill Valves

There are, overall, 3 problems you have to deal with, as a toilet owner:

  • Leaky valves, causing unnecessary water consumption
  • Loud water filling
  • Low water volume being pumped through the valves

Each of these problems can lead to quite a few problems, including a larger money drain. Another important aspect could be the fact of poor valve design. Since these are mobile parts, it is crucial for them to be constructed from solid, quality material.

What can you do to avoid and overcome these problems? Simply put – Look for upgrades. There are always better versions of filling valves you can find, but it is important to know the criteria by which to choose them. And the most important are:

  • Material durability
  • Quiet water filling system
  • Innovative features
  • Water saving mechanism
  • Faster water filling rate
  • Leak proof seal construction

With these features available, you will know for sure your fill valve is exactly what you need.


How Does a Toilet Flush Valve Work?

If you think most people have no idea how a toilet flush valve works, you got it just right. The problem with toilets is that they don’t usually break. I know, the word “problem” may seem a bit weird in this context, but hear me out.

If your toilet never breaks, you will never going to have to fix it. This means you will have no idea how it functions. And having somewhat of a grasp regarding its functionality is crucial. Because, eventually, your toilet valve will break too.

The flush-and-refill mechanism is an easy to understand concept:

  • The toilet tank is capable of holding around 2 gallons of water
  • The flush valve is put in place to hold and release that water when needed
  • Once the tank has been emptied, the flush valve moves back into its initial position, sealing the drain again
  • The filler valve is a second security mechanism, making sure the tank doesn’t overflow and floods the bathroom
  • The filler valve functions based on the filler float that, when reaching a certain height thanks to water level increasing, causes the filler valve to seal the drain

Pretty straightforward, right?


How to Fix a Toilet Flush Valve

But what can you do when replacing isn’t necessary? The flush valve can malfunction for a wide variety of reasons, including breakage or corrosion. Both of which require replacing the piece.

However, in some cases, something else might be at play. The valve can fail to close completely because of the dirt accumulating around the drain over time. When that happens, the best thing to do is to simply clean it thoroughly. This can be achieved by following several simple steps:

  • Empty the tank completely and dry it using a sponge or a rug
  • Remove the drain valve flapper
  • Clean the valve seat of any debris or accumulating dirt
  • Replace or add a sealant ring onto the drain seat
  • Put everything back together and test the mechanism for leakage and efficiency

Obviously, this fix only works when the problem with your flush valve is not major. If it is, all you can do is to replace it completely. Fortunately for you, dirt is the most common leakage or clogging problem, which means cleaning the valve works great.


What are the Benefits of Best Toilet Fill Valve

The main issue here is that most people won’t even realize the importance of good toilet fill valves. Since they don’t usually spend too much time in the bathroom, it won’t hit them until problems start appearing. In reality, having an optimum, high-quality toilet valve can make all the difference in the world.

The best toilet fill valve will deliver the following benefits:

  • Put an end to toilet leakage problems
  • Good quality toilet fill valve eliminates water wastage
  • Allow you to adjust its height and water volume being used
  • Quieter than its alternatives
  • Fills your tank faster

Simply by keeping these in mind and you can definitely see the pluses. And, since not all toilet valves come with the same features, these will also serve as a guide on how to find the best one for you. The most advanced models will even come with built-in sensors, letting you know of any water leaks present.

It is not a matter of “Should I get one?”, but one of “Which should I buy?”


How to Replace the Toilet Fill Valve

Replacing a toilet fill valve is not that difficult like you thought before. There are in fact a few step by step tasks to follow. And if you can follow these perfectly you will be able to replace the fill valve by your own.

  • Shutting off the water by turning the valve clockwise and removing the lid from the tank
  • Drain the water completely
  • Remove the fill valve by loosening the lock nut, located beneath the tank, that keeps it in place
  • Prepare the new one, including attaching the rubber washer and adjusting the height according to your needs
  • Insert it in position and lock it with the help of the embedded mechanism
  • Attach the refill tube to the overflow pipe and the water supply tube to the tank
  • Test the fill valve and verify it for any potential leaks

An easy-to-follow guideline that will help you get the job done fast and on-point. All you need is a bit of patience and an equal amount of know-how and you are good to go.


How to Clean the Toilet Fill Valve

How to Clean the Toilet Fill Valve

You probably didn’t think it is that important to keep your toilet valve clean and in peak condition, right? Just as with everybody else, this is one aspect you have most likely ignored. Until now.

In reality, maintaining your toilet fill valve in top shape is essential if you want to expand its lifetime. It doesn’t matter whether you own a state of the art piece if you ignore cleaning it from time to time.

And you can do that in several easy steps:

  • Shut off the water and empty the tank completely
  • Open the tank and verify the valve (use vinegar to eliminate calcium and mineral build-up or simply cleanse with abundant water if that’s not necessary)
  • Clean the valve washer and eliminate any debris that may be inside
  • Put everything back together and refill the tank

It is ideal to resort to this procedure regularly, no matter how good or new your toilet valve is. Even some of the more modern and advanced toilet valve models can sometimes accumulate debris and mineral deposits that will impend their functioning.

Even once or twice a year is often enough to keep your valves in mint condition and maintain your toilet’s functionality for longer.


Final Verdict

The best toilet fill valve is not just a beautiful-sounding mythical item. It can be found as long as you know what you are looking for. You need to pay attention to details like manufacturer, material composition, features, innovation and quality.

With these in mind, finding the one that suits your needs is just a matter of time. Is it worth it to spend time searching for the right piece? It sure does, because the result will translate into increased comfort and money saving.

What I have provided you with here is the biggest, most revealing items in the field, that will cover all your needs with a minimum of effort. Give them a try and you won’t regret it.

Amy is passionate about all things 'Home'. When she is not busy with her website and writing you may catch her taking ice cream with her kids.

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