Toilet Fill Valves that Prevent Running Toilets – 10 Reviews

If you’ve ever had a toilet that won’t stop running or has a weak flush, chances are you have tried to fix it by jiggling the toilet handle or removing the tank top to tinker with the rubber flapper. These are only short-term fixes; the bigger problem at hand is probably a fill valve needing to be replaced as soon as possible.

A toilet fill valve is responsible for refilling your toilet tank after being flushed. This can get worn out over time, causing leaks and other performance issues. Luckily, replacing a valve is pretty simple, and definitely more affordable than a full toilet replacement.

The experts at Toiletable are here to help you better understand everything you need to know regarding toilet valves. We’ll talk you through the basic differences, how to replace a flush valve, as well as some of our favorites on the market right now. 

Top Fill Valves Picks

›	Editor's ChoiceEditor's Top ChoiceWe pick our favorite model based on style, function, customer feedback, and cost effectiveness.	Fluidmaster PerforMAX Fill Valve
›	Runner Up	Danco HYR451T Fill Valve
›	Best Universal Valve	Korky 4010PK Fill Valve
›	Most Quiet Valve	Kohler Silent Fill Valve
›	Best Dual Flush Valve	Hydro Right Valve HYR270 Fill Valve
›	Best Long Term Investment	Techo Touchless Toilet Flush Kit
›	Most Adjustable	Danco 80816 Fill Valve
›	Best TOTO Valve	TOTO Adjustable Fill Valve
›	Most G-Max Compatible	Korky 528T Fill Valve
›	Best Leak Detector	Danco HC660 Fill Valve

Types of Fill Valves for Toilets

Fill valves are possibly the most important part of the typical gravity flush toilet found in most homes.

Keeping track of the differences can be tricky but we’ve simplified the process. Take a look at our guide to fill valves down below.

★ Float-less Fill Valve

This type of fill valve is a new innovation, made of plastic. They don’t require a floating ball or cup to work. They have a diaphragm pressure-sensing mechanism, originally designed for low-profile toilet tanks in the 90s.

These fill valves are affordable, and since they have few moving parts they are very durable and reliable.

They operate underwater, and you will usually find them attached to the bottom of the tank.

 Comparisons of the Top Fill Valves for Toilets

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Valves on the market today come in a variety of shapes, sizes, and ranges. Each has its benefits to offer and its unique design, yet they are all simple to install or replace.

Reviews of the Best 10 Toilet Fill Valves (2023 UPDATED)

Below we reviewed 10 different fill valves to help you decide the best for your toilet.

1. Fluidmaster PerforMAX Fill Valve – Editor’s Choice

This product is hands down the best one on the market right now!

Smart Design

The Fluidmaster 400AH PerforMax is an easy-to-install unit that is designed to replace outdated or inefficient flush valves. Its design helps it achieve a two-times-faster tank refill rate, when compared to traditional units.

Fluidmaster 400H has a dual-flush system and a roller clamp with water flow controls that help improve water usage and cost-efficiency.

This valve is designed to be height-adjustable, between 10 and 15”, and is adjustable to most toilet models. It works best with high-efficiency toilets, aka models that use 1.28 gallons or less per flush.

The manufacturers ensure the reliability of the product by offering a seven-year warranty, making it one of the best options on the market. The Fluidmaster takes less than ten minutes to install so you can go back to using your bathroom as per usual.

Consumer Reviews

“Pretty much finished trying other brands so this is what I buy every time and I keep one in my closet for emergencies and replace it when I have to use it. Always have one on hand these days.” – Amazon user Douglass M.

“Fit and works perfectly.” – Amazon user jsvt184

“Quiet and fills toilet quickly.” – Amazon user Johnny F.

Final Thoughts

While some reviews shared that this value is louder than they’d like, the pros outweigh the cons with this one.  Multiple customers were pleased with the ease of installation and the speed of the tank filling with this valve.  There are also reviews from folks with different model toilets, confirming the universal fit of this valve!

2. Korky 4010PK Toilet Repair Kit – Best Universal

Get the job done fast and well with this Korky model.

Smart Design

The 4010PK Repair Kit universal fill valve features a design that is compatible with all brands of toilets, regardless of their age. The valve comes with a 2-inch flush valve that’s easily adjustable. The valve’s chlorazone composition resists chlorine, bacteria, hard water, and even city water treatment so you can breathe easy knowing the valve will withstand the test of time.

The 4010PK Repair Kit includes a 528 fill valve, 2001 flapper, refill tube, metal tube clip, a mounting nut, a cone washer, a coupling nut, 4020 flush valve, 464 tank-to-bowl gasket, and a set of hardware. The provided instruction manual is easy-to-follow and beginner-friendly.

Customers have praised the product for its ease of installation and effectiveness in stopping leaks; we have to agree. Another great benefit of the 4010PK is the valve’s quiet design.

Consumer Reviews

“This design is nice and simple with a non-moving parts sensor. Water fill is quick and other than the water line noise, quiet.” – Amazon user Rick S.

“Installation was a breeze. Unlike previous two valves I got from other companies, this one worked without any issues.” – Amazon user David M.

“Easy to install, good instructions, quiet and quick fill.” – Amazon Customer

Our Thoughts

With a few simple tools, customers appreciate the easy install of this replacement part, along with the quality of the part.  One user said it best “Saved myself several hundred bucks and now I basically have a new toilet!”

3. Kohler Silent Fill Valve Kit – Most Quiet Valve

Turn your toilet into the throne you deserve.

Smart Design

The Kohler Silent Fill Valve Kit is a genuine Kohler accessory that is compatible with all Class Five Kohler toilets. The valve’s multi-fill-rate inserts optimize performance with every flush.

This kit is designed to be height adjustable to fit any Kohler toilet tank. The Silent Fill technology helps provide a truly effortlessly quiet refill experience.

This kit has an adjustable fill valve that improves water flow efficiency to help conserve water. The valve also comes in two different colors, matching different shank types, to ensure you’re using the right model. If you have a grey shank, use the Gp1138930. For a black shank, use the GP1083167.

Consumer Reviews

“Great product. Buy with confidence.” – Amazon user Val

“This fill valve was easy to install, and the blue fill hose restrictor was already preinstalled on the unit.” – Amazon user

Our Thoughts

Customers agree that this is a perfect replacement part for Kohler toilets.  Many customers shared that the install is easy, one stating “It comes with everything you need.”

4. Hydro Right Dual Flush Valve HYR270 – Best Dual Flush Valve

This product is yet another Danco great.

Design

The NEXT BY DANCO Chrome HYR270 is an easy-to-use toilet flush valve that requires no installation tools. There is no need for the removal of the tank. Instead, this valve converts any regular toilet into a two-button dual flush toilet within ten minutes.

This technology allows you to choose the amount of water used per flush, which helps save up to 70% of water consumption.

The HYR270 features a two-button setting. One button is for the quick-flush setting which uses significantly lower volumes of water for smaller waste loads while the second button is for the full-flush setting. Studies find that users pick the quick-flush setting four out of five times, saving a family of four more than 15,000 gallons of water per year.

The design of this unit is sturdy and well-built to prevent leakage from faulty flapper chains or handles.

The HYR720 is chlorine- and chemical-resistant and therefore invulnerable to warping. The excellent quality ensures cost-effectiveness. The flush valve is compatible with most 1.6 to 3.5 gpf toilets. It requires a 10” minimum clearance from the highest point of the flush valve opening to inside the tank lid.

Consumer Reviews

“This thing works great. Always wanting to save water, this is the perfect solution for the toilets.” – Amazon customer, Roc

“I found this an exceptionally easy to install device that works exactly as advertised.” – Amazon user, TheCarsForever

Our Final Thought

Customers like this water-saving toilet upgrade “they do save water…Much cheaper than replacing with a new $400 toilet!”  Overall installation and functionality are pretty straightforward.

5. Techo Touchless Toilet Flush Kit – Best Long Term Investment

 

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While this unit isn’t the most budget-friendly, it delivers in quality and durability.

Smart Design

Techo Touchless Toilet Flush Kit is an automatic motion-sensor toilet flush kit powered by batteries. The kit’s reliable motion sensors have an adjustable motion-sensing range and automatically flush your toilet when your hand waves over the detection range. In the case of an emergency, your manual lever will still work as a backup.

The fill valve is simple to install in approximately twenty minutes. Battery replacement is made easy by the well-designed external battery slot. It requires 4 AA batteries to run, which come with the kit. It also comes with a screwdriver for adjustment and an easy step-by-step guide to help you install your kit.

These motion sensors provide sanitary convenience by automatically flushing your toilet when you wave your hand over the sensor within the adjusted detection range.

Consumer Reviews

“Nice compact and clever device, fully recommend for elderly and anyone that may find flushing a toilet not so easy, as this makes it no effort.” – Amazon customer, Rob S.

“This unit solved everything. Battery life is very good. Sensitivity is excellent.” Amazon customer, Jose S.

“Easy to install. Easy to use very happy with the flush. Wished I had bought it sooner!” Amazon customer, Tina

Our Final Thought

While several buyers agree that instantly is a little tricky, it seems to be worth it for the quality.  Many customers also purchased this after a competitive touchless value replacement and preferred this to the competition.

6. Danco 80816 Complete Toilet Repair Kit – Most Adjustable

 

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Danco is a well-known supplier of quality plumbing products.

Design

This fill valve is approximately 8.5” from the bottom of the tank’s inside. The brass rod is 7.75” and the float is 5.5”; when the brass road is threaded into both the float and threaded into the fill valve, the total length of the rod and float ends up being about 11.75”.

The Danco 80816 is designed to fit 2” toilet flush valves and is made to last. With its durable plastic and rubber exterior, the repair kit makes flushing simple. The kit works best with standard single-flush units.

The 80816 comes with a universal flapper, adapter, spring, float with rod, and a ballcock with a refill tube. The instruction manual helps you install the kit with no professional help required. In just under ten minutes, you’re all set to go!

Consumer Reviews

“Easy to install, and it had been working great. For the price, this cannot be beat.” – Amazon customer

“It was easy to replace, works great, had all the parts to replace the old one and a shorter tube saves water as well which is a plus.” – Amazon customer Jamesa

7. TOTO Adjustable Fill Valve – Best TOTO Fill Valve

This model is compatible with all contemporary TOTO units.

Design

TSU99A.X Fill Valve is manufactured to replace damaged or outdated flush valves of any TOTO toilet. It has an American standard ⅞”  inlet pipe for the water connection and is made entirely of plastic.

The model comes with a refill valve to help control the flow of water and refill volume, which reduces water loss. The refill valve can be tweaked according to personal needs.

This valve has an adjustable height so it can accommodate toilet tanks of different sizes. The model comes with a valve, refill tube, clamp, cone washer, and nut.

Consumer Reviews

“Toto made these super easy to install. No problems whatsoever. Took 10 min with clean up to install. Great product!” – Amazon customer, Brian

“Great product. Totally endorse, buy it, don’t sub on something cheap.” – Amazon customer, Bobby B.

“I followed the instructions and It installed correctly the first time! I was nervous not being a Plumber or having any experience at installing a Fill Valve but felt proud of myself for having a go” – Amazon customer, Stephen K.

Our Final Thought

Overall, customers are pleased with the replacement valve – ” the toilet is not only working, it’s working like a charm and better and more reliably than before.”  Along with the quality, they also agree that install is no problem and comes with all the parts you will need.

8. Danco HC660 Toilet Fill Valve Repair Kit – Best TOTO Fill Valve

 

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This Danco product has an ingenious design that comes at a low price.

Design

The HC660 has an adjustable valve height from 9-14” with a simple ¼” turn. The kit’s cleaning tubes clean out rust and sediment, as well as prevent slime buildup on the toilet’s flapper.

HC660 comes with a float lock that shuts off the water inside the tank to make repairs easy. The built-in mini valve adjusts the water refill rate to save you thousands of gallons of water per year. One of the best features of this repair kit is that it detects leaks; you’ll hear an audible flow of water when a leak is detected!

Thanks to the model’s smart nut, you’ll be able to install the kit in a matter of minutes.

Consumer Reviews

“Best I’ve used so far. Has many built in features; adjustable bowl fill level, shutoff tank fill within the unit. Has a tank fill tube that swirls around the bottom of the tank to keep sediments in suspension. No tools needed to install.” – Amazon customer, Roger W.

“If you’re looking at buying this today, don’t hesitate! This is super easy to install and works like a charm. It’s definitely a TEN STAR purchase!” Amazon customer, Tanja F.

“Definitely will buy more when needed. Beats the others I’ve used and price is worth it.” – Amazon customer, Ethan

9. Korky 528T Toilet Fill Valve – Most G-Max Compatible

 

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Korky is another toilet part manufacturer with a fantastic reputation in the industry.

Design

The Korky Replacement Toilet Fill Valve is a fill valve to replace the TOTO G-Max and Power Gravity as well as the E-max. Its easy installation process does not require any tools or excessive labor.

This unit is designed to replace slow-filling, leaking, and noisy toilets. It is equipped with an innovative twist-lock adjustment that provides a hassle-free installation.

You can remove your old fill valve or ballcock and replace it with this Korky model. It fits several toilets and is adjustable between 7.25 and 13.5” and has a G-connector outlet type.

This valve also comes with a 528GT Fill valve, a refill tube, a metal refill tube clip, a mounting nut, a cone washer, a coupling nut, and an instruction manual.

Consumer Reviews

“Fits and works well as a replacement for TOTO Toilet.” – Amazon user, CCS

“Easy to install, good cost.” – Amazon user, por825

Summary of Recent Reviews

Customers like this Made in the USA option for its ease of install and reliable performance.  “There is quality in the item and is a bargain compared to the original equipment that cost four times as much.”

Fill Valve Buying Guide

Buying the right fill valve can be quite tricky. There are a few things that you should keep in mind, so in this section, we will talk about everything related to buying the right fill valve for your toilet.

Ease of Installation

One of the first things that you should consider, especially if you are not a DIY professional, is ease of installation. Thankfully, most fill valves are relatively easy to install, and the fitting of most brands is more or less the same. For example, you would be able to fit a Toto fill valve in a Kohler toilet with no problems.

Further, most fill valves come with a useful user manual that guides you through the installation step by step. The key steps in the process are setting the required height, fixing the valve in the tank, testing the valve, and making any final adjustments.

One-Button vs. Two-Button Valves

This choice depends mainly on the type of toilet you’ll be using with the valve. For example, two-button valves are not a top priority for modern houses. However, these are a good choice for cabins, RVs, and other situations where the supply of water is limited.

Adjustability

Buying a valve from the store is simple. You can walk into a store with a sample of a piece that you want to replace and they will give you exactly the same model. However, buying a fill valve online can be tricky. If you’re planning to make your purchase online, you might want to buy a valve that is adjustable, to be sure that it will fit your toilet.

Compatibility

As mentioned, most fill valves are universal, but not all. Different models come in different sizes and shapes, so make sure to get the right description and dimensions that match your toilet model before you buy. Also, check if you should buy a valve that is singular or dual-flush.

Low Water Inlet Holes

A nice advantage of a fill valve with low water inlet holes is that it consumes less water without compromising the performance. This factor might not seem like a big deal, but you will notice quite a difference after a month’s use.

Noise Insulator

No one wants to hear any noise that comes from the bathroom. To promote comfort and privacy, modern valves are designed with sound insulation that minimizes any noise. If you notice that your toilet flushes with noise, it could mean that the valve has worn out.

Refill Rate

The refill rate is the time it takes for the toilet to refill after a flush. This detail is important because it directly affects how long another person has to wait after the previous person has used the toilet. It might not be of great importance for small families, but a quick refill rate is important for larger families and public bathrooms.

Water Intake

Another factor you may want to consider is the water intake adjustability caps or a roller clamp. These features allow you to adjust the water intake, which prevents having to store up large volumes of water after every flush.

How to Replace a Toilet Fill Valve

Replacing a toilet valve is easier than it seems. These simple steps will help you replace your valve in no time!

• Disconnect your water supply line. In the back of your toilet, you’ll see the water supply valve. To turn it off, turn it clockwise. Don’t forget to flush in order to drain the water from the tank.

• Unlock the old fill valve. Depending on your fill valve, you’ll need pliers or a wrench to remove the valve nut. After removing the nut, pull the valve towards you and lift.

• Insert the new valve. Insert the fill valve shank into the fill valve. Push down and tighten the nut.

• Adjust the refill tube and adjust the water level. Reattach the refill tube and angle adaptor to the overflow pipe holder.
• Adjust the water level. Turn your water supply line on by turning it counterclockwise. You can adjust the water level by pressing on the adjustment clip and moving it up or down.

Now that you know the basics of the toilet fill valve, it’s time to pick the best fill valve for your needs. Toiletable saves you the trouble, as our experts compile the best products for all toilet types. Check out our Top 10 toilet fill valves down below.

In Summary

Finding the right fill valve kit can be a hassle, but it’s worth the research so you don’t end up with more problems down the road. Toiletable has your back in every step of your toilet journey.

Our experts do the research so you don’t have to. Our top 10 picks are a great place to start for your fill valve needs, regardless of your toilet brand.