Whispering Flush With 7 Of the Best Toilet Fill Valve Reviews

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What is the first thing you need to learn when you first move into a home? Is it what day the bins get collected? Is it where the electricity meter is? Finding out as much as you can about the home you live in as quickly as possible is really important. It can not only save you from making errors but can help ease you into feeling settled. 

So how much have you learned about your new toilet so far? Have you worked out how much water it consumes per flush? Have you found out where the water inlet off switch is? Have you found out that it hasn’t been maintained for years, and now you need the best toilet fill valve reviews to help you out?! Don’t worry. We are here to help you learn more about your toilet and how to get the best toilet valve. 

In this article, we’re going to review the following toilet fill valves:

Table of Contents

How Old Is Your Existing Toilet? 

How old is your existing toilet? Maybe you have bought a new home, and you know that the toilet is merely weeks old. Maybe you have no idea of the history behind your bathroom and, as such, don’t know how old your toilet is. You see, the reason it’s important to know the age of your toilet is because you need to know how out of date the technology is inside your toilet. 

Did you know that toilets have developed at an astonishing rate over the last decade, and you now only need a quarter of the amount of water that you used to flush it? Imagine if you are using 4 times too much water for every single flush! That would not only be a waste of water but would also be a waste of money too! 

As well as the water efficiency, other elements of the toilet have been improved upon and developed. These elements include the shape of the bowl and the glazing of the bowl. You see, the shape of the bowl determines how effectively the water swishes around it. The more the swirl, the higher the pressure of the water, and this, in turn, pushes the waste away more effectively. In addition to this, if your bowl is glazed, then it helps this swirling action even more by creating less friction. 

In some cases, this glaze even has antibacterial properties within it. This stops waste from clinging, stops germs from breeding, and helps the flow of the water. The glazing on the inside of the bowl is a real game-changer when it comes to cleaning and makes the task much simpler. As you might have guessed by now, not only are new toilets better for water-saving capabilities, but they are also more hygienic as well. 

How to Maintain Your Toilet

If your toilet is less than a decade old, then we recommend simply maintaining it instead of replacing it. But can this be done without the help of a professional? It sure can! Here is how. 

Keep it clean

This might seem obvious, but one of the best ways to ensure that your toilet never springs any leaks or problems is to make sure that it stays clean. We don’t just mean clean from waste deposits or dirt that you can see building up on the outside of your toilet, we mean inside your toilet as well. You need to ensure that your inlet pipes, your flush system, and your water tank are all clean and free from limescale or other debris found in your water system. This debris can clog up the tank and cause major problems as this builds up. Try to descale your pipes and tank whenever possible and also ensure you pay close attention to the cleanliness of your waste outlet. 

Tighten your bolts

Over time, bolts and screws from your toilet will become loose due to the constant movements they succumb to each day. This means that you need to tighten them up every so often, or else you’re very likely to encounter a problem with your toilet running. A lot of people miss this step when they are maintaining their toilets, and that is usually when leaks start to happen. The main screws to focus on are the ones that mount your toilet to the floor, to the wall, and the bolts that attach the water tank to the bowl. By tightening these every 6 months or so, you will remove the added risk of a leak. 

Replace your seals

There are several places in your toilet that have seals and wax rings to help create a solid seal between two pipes. These are very important to avoid the risk of a leak. However, over time these seals and rings perish due to the fact that they are sat in water all day. It is really important that you replace these seals BEFORE you develop a leak. Most of the seals will be available at any good hardware store, and they normally come with a warranty, which helps you determine how long they will last. 

Upgrade your flush to the best toilet valve

One thing that most DIYers forget to do is to upgrade their flush. Imagine how many times a day your flush is used and then multiply that by 365 days a year, over another 10 years. That’s a lot, right? And with this constant use, something is bound to wear out eventually. That is why you need to replace your flush system every few years. Luckily, we have come up with 7 of the best toilet flush valve items to help you replace your old one today. 

Top 7 of the Best Toilet Fill Valve Reviews

Fluid Master PerforMAX Toilet Fill Valve

If you are looking for a great all-rounder when it comes to toilet fill valves, then the Fluid Master PerforMAX is ideal. Great value for money and really sturdy, this valve will help fix any problems that you might have with a lackluster toilet or with a noisy flush. You see, this flush valve works by increasing the flush’s pressure, which makes it the most powerful toilet fill valve on the market right now! 

The PerforMAX is really easy to install and will fit any sized toilet thanks to the adjustable height. IT can go from 10 inches to 15 with a simple roller clamp system. Not only that but Fluid Master are so confident in their products that they have decided to give this fill valve a 7-year warranty! If you are sick and tired of having a noisy, low pressure toilet flush, then replacing your valve to this might just be the answer. 

  • Universal design
  • Quietens flush
  • Increases flush pressure
  • 7-year warranty
  • Installation guide is confusing

Fluid Master Universal Fill Valve and Flapper Kit

If you are trying to replace your flush valve in an older style toilet and need something that can cope with your water tank’s capacity, then this kit will be ideal. Designed to accommodate flushes of 3.5 gallons or greater, this combo kit will help you to replace both your flush AND your flapper. It comes with all the accessories you’ll need and a full instruction booklet, which will help you to install all the items. 

The fill valve is a 400A anti-siphon valve, and the 501 flapper is made from rubber with a Microban coating. This coating prevents bacteria from growing on the flapper and keeps the water hygienic. While you might not think that the water inside your toilet needs to be clean and free from bacteria, in actual fact, the dirtier your toilet water is, the more likely your toilet is to smell. Keep your bathroom clean by replacing your flapper every 5 years. 

  • Flapper and fill valve combo
  • 400A universal fill valve for 3.5-gallon flushes
  • Microban coated flapper
  • Only suitable for large toilets
  • Not all of the parts are covered by the 5-year warranty

Kohler Silent Fill Toilet Valve Kit

If you have a Kohler toilet, then we always recommend replacing any parts with genuine Kohler replacements. The reason for this is because they will fit perfectly into your system and are designed to do so to avoid leaks. The Kohler Silent Fill Toilet Valve Kit is a genuine Kohler part and is built with the same level of integrity and high quality that Kohler toilets are made. The silent fill valve is, as the name suggests, designed to fill the water tank silently, which means a lot of people upgrade to this model. 

It easily and simply replaces your existing valve and is adjustable depending on how much water you want to use per flush. Worried it won’t fit your model toilet? Don’t worry. The Kohler Silent Fill Toilet Valve Kit is height adjustable, so no matter how high or low your water tank, this valve will fit nicely. 

  • Height adjustable
  • Fits any Kohler toilet
  • Silent fill function
  • Genuine Kohler part
  • No instructions
  • No additional installation hardware

Toto Korky Toilet Fill Valve

If you want a genuine part for your toilet, but you don’t have a Kohler, then the Toto Korky Valve may also prove useful to you. Mainly designed to fit the G-Max and the Power Gravity Toto toilets, this fill valve is still adjustable, so it may fit other models (see manufacturers list for more details). The valve itself is designed to be one of the quietists on the market and will fill your cistern with barely a whisper. 

This whole kit comes complete with all the items you need to install it including a refill tube, mounting nut, refill tube clip, cone washer, tamper proof key, coupling nut, and a full set of instructions on how to install it. This all-in-one valve system is a great replacement to the older-style ball and float systems, which can be found in older toilets and help you manage your water consumption better.  

  • Toto brand
  • Will fit most Toto toilets
  • Whisper quiet filling
  • Comes with additional hardware
  • Not suitable for all toilets
  • Replacing the older style systems might be tricky for a beginner DIYer

Kohler Class 5 Toilet Fill Valve

Designed to fit a larger sized toilet water tank, the Class 5 Toilet Fill Valve is again a silent fill valve system. This valve works by ensuring that the water coming into the system fills as quietly as possible while ensuring that it stops at its designated fill level. The fill levels are interchangeable on this valve, and this will help you to adjust your water consumption as you see fit. 

The beauty of this type of system is that you can play around with your fill levels until you finally feel comfortable, not something that you can do with a traditional fill valve. The fill valve works by combining the float technology that we know and love with the powerful force of a newer valve, thereby providing a silent yet powerful flush to wash away any waste. Many people upgrade to this valve because it is so quiet, but check with the manufacturers’ list first that it is compatible with your system. 

  • Silent fill valve
  • Fits most larger Kohler toilets
  • Powerful flush
  • More traditional design
  • Check it fits your system before buying
  • No warranty on the product

American Standard Master Fill Valve 400A

Everyone has sat on an American Standard toilet at some point in their lives; in fact, they are the most popular commercial toilet available on the market. So, it’s no surprise that the Master Fill Toilet Valve is one of the most popular valve replacements on the market too. With no bells and whistles or super silent functions, this valve simply does what it says and helps to keep your tank topped up and your flush working smoothly. 

Universally designed to fit almost any toilet, this great value item is easy to install and even comes with all the additional hardware you’ll need, such as the coupling nuts, shank washer, refill tube and refill tube clips. It even has an adjustable water level monitor that allows you to determine how much water you use in every flush. 

  • Universal design
  • American made
  • Great value for money
  • No additional features such as silent fill or power flush

Mansfield Plumbing Toilet Fill Valve

Designed specifically for any toilet that matches the Mansfield toilet dimensions, this fill valve is straightforward and bang on budget. The slimline design doesn’t take up much space in the water tank, which allows you to fill it with more water. A straight swap for your existing toilet valve will see an improvement in the speed of the flush and the speed that the water fills the tank. 

While this fill valve doesn’t come with the additional hardware you might need to install, it does come with a comprehensive set of instructions that will help you easily fit it. 

  • Great value for money
  • Slimline design
  • Compatible with Mansfield toilets
  • No additional hardware
  • Not universally designed


There you have the top 7 of the best toilet fill valve reviews. We hope that by reading through them, you were able to pick which fill valve was right for your toilet. If you can’t decide which one you like the best then can we recommend to you the Kohler Silent Fill Toilet Valve Kit. Not only does it have the silent fill feature which we really like, but it is also made by Kohler, a company that knows how to make high-quality products.