
Are you looking for the best toilet fill valves?
Toilet fill valves can last up to 6 years, sometimes even longer, depending on the valve’s quality and use. However, just like any other valve that frequently comes into contact with water, toilet fill valves tends to clog or begin to leak over time..
Fortunately, replacing your toilet’s fill valve is generally a quick and easy task that will save you time and money.
The best toilet fill valve will be easy to install, made of sturdy materials, and excellent quality. We can help you choose the best toilet fill valve for your bathroom and support a hassle-free installation if your toilet tank is leaking, shrieking, or filling slowly.
So in this article, let’s closely look at the best toilet fill valve on the market.
What Is A Toilet Fill Valve?
The toilet fill valve is a toilet part inside the tank, and its function is to refill the tank after every flush. The valve will receive the water from the tank’s bottom.
A pressure sensor or floater typically evaluates the water level in the tank, and the toilet fill valve reacts if there are any changes. The fill valve opens when you flush and stays open until the proper amount of water is present. This procedure makes sure your toilet has enough clean water.
Different Types of Toilet Fill Valves
Thankfully, the market offers a few trustworthy and best toilet fill valves. The fact that many are universal implies that they will go with any toilet, regardless of the brand, and can replace the same type of fill valve in the toilet.
Here is a tip to help those unsure of what kind of best toilet fill valve to pick.
Consider taking the old fill valve to a hardware or plumbing supply store after removing it by cutting off the water supply to the toilet to ensure a precise fit.
1. Ball Cock Fill Valve
The ball cock fill valve, also known as the plunger fill valve type, has been used for many years and is built to last. The ball cock fill valve’s visible indicator is an expanded, air-filled sphere that glides on the water’s surface in the toilet tank.
The water rushes to the toilet bowl and flushes the waste when the flush lever is depressed, which lifts a bar attached to a chain connected to a flapper (seal). When the air-filled ball hits the bottom of the tank, the fill valve is activated, allowing new water to enter the tank.
The air-filled ball floats upward as the water level rises, and when it reaches a certain height, the valve closes, and the water stops.
2. Float Cup Fill Valve
Another type of toilet fill valve is called a “float cup,” An air-filled cylinder that slides up and down the valve when the toilet flushes, followed by the tank filling, giving it a similar motion to a ball cock.
The float cup sinks to the bottom after the toilet flushes, and the water drains from the tank, opening the water flow valve. The water supply will shut off when the cup floats to the top.
Many toilets available nowadays include float cup fill valves that are easy to replace and adjust the water – level.
3. Internal Float Fill Valve
This is a more recent float cup type with a tiny internal float lever hiding inside the valve’s head. Internal floats feature a compact design and a precise shut-off compared to external float cups.

The internal float won’t move up and down with the water level, but it will still open and close the water entrance as necessary.
4. Floatless Fill Valve
A floatless fill valve has a pressure-sensitive diaphragm that rests at the bottom of the tank, is submerged, and regulates the water supply in the tank rather than an air-filled ball or cylinder.
After a flush, the diaphragm detects a drop in water pressure and opens the water input to replenish the tank with water. The valve turns off the water when the water pressure reaches a particular level, which determines the volume of water in the tank.
Top 4 Best Toilet Fill Valve
Scroll down and find out the top 4 best toilet fill valves available today and its features!
Fluidmaster PerforMAX Toilet Fill Valve
One of the best toilet fill valves on our list is the Fluidmaster 400AH High-Performance, as it offers the universal fit at the most affordable price, outpacing all of the competitors on our list.
The Fluidmaster PerforMAX 400H fill valve will be the best option if your toilet tank is filling slowly or running continuously. For a stronger flush, the 400H includes both tank and bowl water control. Due to the flexible nature of the bowl water, this valve works in both old and new toilets.
This valve can be adjustable between 10 and 15 inches, making it suitable for various toilets from all manufacturers, including dual-flush and modern toilets. Being a high-performance valve, it fills the bowl more quickly than standard valves, although at the cost of a bit of noise.
Fluidmaster PerforMAX uses far less water than other valves, primarily due to the water-saving roller clamp that optimizes the water use in your toilet. In addition, the valve comes with a seven-year solid warranty, giving you peace of mind that you won’t need to perform this repair any time soon.
Korky 528 Toilet Fill Valve
The Korky QuietFILL toilet fill valve is designed to repair slow refilling, running, and noisy toilets, which is quieter than other fill valves. It has an all-brands universal design and offers a wide range of adjustability to accommodate the majority of 2-piece and 1-piece toilets. The Quiet Fill fill valve is easy to install and adjust without any tools.
This is one of the cheapest-priced best toilet fill valve replacements available today. Despite this, it’s a quality part that never gives us trouble.
It’s fully adjustable from 7.75-13.5 inches, allowing you to find the perfect height for your setup. It’s even equipped with QuietFILL technology so that your toilet doesn’t sound as loud as a vacuum.
Danco HC660 Water-Saving Toilet Fill Valve
The Danco HC660 Water-Saving Toilet Fill Valve is another best toilet fill valve that offers some exciting features that can rarely find in other valves.
The HC660 HydroClean Toilet Fill Valve fixes the leaks and miscalibration problems, which are the two leading causes of water loss in toilets. It swiftly refills, calibrates to adjust the amount of water needed in the tank, and jets clean the tank.
A unique feature of this valve is the leak detection and signals when it leaks. It is designed to fit most standard toilets, and the height can adjust from 11 to 13.8 inches. The HC660 installs easily without tools.
The HC660 HydroClean Toilet Fill Valve also has a shutoff feature at the top of the valve that lets it quickly shut off the valve if the tank is overflowing. There are also jets on the valve that spray water into the tank to help keep it clean.
KOHLER Genuine Universal Fill Valve Kit.
Due to its high quality and extended durability, KOHLER Genuine Universal Fill Valve is one of the market’s most well-known and best toilet fill valves. It is an adjustable fill valve that is compatible with different KOHLER toilets and offers various colors.
The heavy-strength plastic construction of this Kohler toilet fill valve sets it apart from many other fill valves, which often have metal components vulnerable to corrosion.
This fill valve also comes with several flow restrictors to match the flow requirements of almost every toilet tank. It also includes several components that will let it fit many Kohler and Fluidmaster toilet tanks.
How To Choose The Best Fill Valve For Your Toilet?
The best toilet fill valves come in a wide variety and are offered by numerous manufacturers. Similar to toilets, there are many different types available. You need to choose the best valve for your toilet and your budget.
It may seem like a trivial choice, but if your toilet valve is continually running, the cost of your water bill will go up, and you’ll get tired of hearing the trickling every time you use the restroom.
As we want to spare you the trouble of finding the best toilet fill valve, we have created a quick buyer’s guide to assist you.
1. Fit and Compatibility
Before placing an order for a replacement toilet valve, confirming that the product will truly fit your toilet is crucial. Few things are more annoying than disassembling your toilet only to discover that your new valve doesn’t work!
Some valves are manufactured to fit specific toilet models and are model-specific. The same company typically makes these valves and the toilets they fit to keep you buying their products. Make sure the valve you buy from a toilet brand is suitable for all models before you buy it.
The majority of fill valves have universal fittings that are suitable for virtually any toilet. However, the fit may not be as standard as you might expect.
Choose the best toilet fill valve that adjusts to the depth of the water in your tank by measuring the depth of the water in the tank. Some low-flow toilets only have a tank that can hold 8 inches of water. A valve won’t function in that tank if it can’t be pushed that low.
2. Operating Volume
The valve refills the tank after you flush the toilet. But while filling, certain valves make more noise than others. You may not have given this part much thought, but if you use a quiet valve, you will notice it as the procedure moves along.
Even though it might not seem significant to you at first, the same sound may repeat while your guest is around and can produce additional disturbance or even be embarrassing!
3. Water Conservation
Some valves have features that let you customize how it operates. Sometimes these valves might provide significant water conservation. Some manufacturers assert that they can save up to 38% of water used to refill the tank. This may result in considerable water bill savings.
How To Replace A Toilet Fill Valve?
Every time you flush the toilet, the fill valve opens and closes. The valve wears out over time and requires replacement. If the fill valve is an older design with a float ball, here is your chance to swap it out for a more reliable, modern, and best toilet fill valve with an integrated float cup.
Tools Required
- Sponge
- 2 channel-type pliers
- Scissor
- Best toilet fill valve
Step 1: Clean Out the Tank
Turn the handle of the fixture shutdown valve clockwise until it stops turning to turn off the water supply to the toilet.
The fill valve usually places on the bottom left side of the toilet tank, close to where the water supply tube connects to the fill valve’s tailpiece on a water supply pipe that emerges from the floor or wall.
Remove the tank lid, flush the toilet, and empty the tank. Then, use a sponge to blot up any remaining water from the tank’s base.
Step 2: Takeout the Toilet Fill Valve
Remove the toilet fill valve using channel-type pliers or an adjustable wrench to unplug the water supply line connected to the fill valve tailpiece.
The mounting nut that secures the fill valve’s bottom flange to the tank’s bottom should then be loosened and removed. Reach down to the tank from the top and grip the fill valve’s base with different pliers to stop it from turning when you remove the mounting nut.
Step 3: Setup the New Fill Valve
Attach the rubber washer that is part of the package to the fill valve tailpiece’s bottom flange. This washer will be an inner seal to stop leakage around the fill valve’s base.
If necessary, adjust the fill valve’s height. The process varies depending on the valve, but for the majority, it just involves shortening or lengthening the stem piece to make the fill valve’s total length fit within your toilet tank. The head of the overflow tube should be slightly higher than the top of the fill valve, but not by much to prevent the tank lid from shutting.
Step 4: Install the New Fill Valve
Install the fill valve in the toilet tank with the tailpiece inserted through the tank’s bottom opening. Place the valve so that the water outflow tip faces the tank’s overflow tube.
Beginning with a hand-tight mount nut, gradually twist the mounting nut by using channel-style pliers. Thread the mounting nut onto the tailpiece from below the toilet while holding the fill valve in place with one hand. Take care not to turn the body of the fill valve within the tank.
Reconnect the fill valve to the water supply tube. Once more, tighten by hand and then a little more by using pliers.
Step 5: Connect and Adjustments the Fill Valve
The rubber fill tubing should be tied to the fill valve’s tip on one end, and the other end made with a plastic or metal adapter should clip to the overflow tube’s top.
The rubber tubing might need to be cut with scissors if it is too lengthy. When tied to the overflow tube, it should bend smoothly without any kinks.
Watch how the toilet tank refills with water by fully opening the water supply valve. Follow the valve manufacturer’s directions to adjust your toilet’s water level to the proper height.
The tank should fill to a specific water line on its inside walls, and the water level should be about an inch underneath the top of the overflow tube.
Make sure there are no leaks by checking the shutoff valve and fittings on the bottom of the tailpiece. If there is any leaking, you should tighten them a little more.
Conclusion
Hope this guide has made it much easier to choose the best toilet fill valve for your bathroom!
It is essential to have a suitable toilet fill valve that will work well and last many years. The best toilet fill valves will be high-quality and easy to install and use. If you are still unsure what type of valve to purchase, it will be better to contact a local hardware store and ask for assistance.
How does the toilet valve work?
After a flush, the toilet fill valve opens the water inlet to allow fresh water to enter the tank and closes the inlet once the water level reaches a preset level.
Although a float that rises and falls with the water level is the most typical method, some valves incorporate pressure-sensitive diaphragms that control when to open and shut the entrance.
What are the indications that a toilet fill valve needs replacement?
The most typical symptoms include sounds made after a flush, such as crackling, squealing, grunting and unusually long load times for the tank.
If you notice these symptoms, replacing the old fill valve with the best toilet fill valve for your bathroom is preferable.
How to adjust a toilet fill valve?
It depends on the type of fill valve. The arm that supports the air-filled ball on ballcock valves can often be adjusted by slightly bending it. Most float cup valves have an adjustment screw that can turn to increase or decrease the water level.
If you need help with the correct technique for your valve, refer to the manual available with the respective toilet fill valve.
FAQ
How does the toilet valve work?
After a flush, the toilet fill valve opens the water inlet to allow fresh water to enter the tank and closes the inlet once the water level reaches a preset level.
Although a float that rises and falls with the water level is the most typical method, some valves incorporate pressure-sensitive diaphragms that control when to open and shut the entrance.
What are the indications that a toilet fill valve needs replacement?
The most typical symptoms include sounds made after a flush, such as crackling, squealing, grunting and unusually long load times for the tank.
If you notice these symptoms, replacing the old fill valve with the best toilet fill valve for your bathroom is preferable.
How to adjust a toilet fill valve?
It depends on the type of fill valve. The arm that supports the air-filled ball on ballcock valves can often be adjusted by slightly bending it. Most float cup valves have an adjustment screw that can turn to increase or decrease the water level.
If you need help with the correct technique for your valve, refer to the manual available with the respective toilet fill valve.
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