The 4 Best Toilet Fill Valves – Reviews 2024

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Photo by Tim Evanson / CC BY

So you are looking to replace a defective toilet fill valve in your bathroom. What you probably did not expect is all of the different sizes and price ranges these come in. There are a lot of toilet valve choices out there for sure. That is why we decided to give you a little help with your decision by reviewing some fill valves that we thought were outstanding and by giving you some other information to help you with your purchasing decision too.

Here are 4 of the best toilet fill valve systems on the market. Check them out.

Fluidmaster 400ARHR High Performance Toilet Fill Valve

Toilet fill valves don’t have to be expensive to work well and this is a good example of that. Fluidmaster functioned great when we tested it and it had a very simple but effective mechanical action to it.

There simply is a lot to like about this particular toilet fill valve. For starters, it is very easy to install. It also allows for a greater fill rate than most standard toilet fill valves. It will still save you water though even though it still fills fast. It has a very accurate fill setting and will fit most any brand toilet that is made.

What is the best thing about this toilet valve? How about the fact it has a full 7-year warranty from the manufacturer. That is something you usually only see on expensive products such as cars. That means Fluidmaster has a lot of confidence in this solidly built toilet fill valve.

Kohler GP1138930 Universal Fill Valve for Most Toilets

There are not many names that are stronger than Kohler when it comes to fittings and other plumbing products. This toilet fill valve is a great example of that. It is a moderately priced toilet fill valve that will fit most any toilet out there. It is also a valve that is fully adjustable.

One unique thing about this Kohler toilet fill valve is how well-built it is. One of the reasons it is so durable is because its predominantly made of heavy duty plastics, unlike many other fill valves which include some metal parts that are subject to corrosion.

This package also includes several parts which will help this flow valve fit many Kohler and Fluidmaster toilet tanks. These include such things as making the water inlet hole very low on this fill valve, and it also comes with different flow restrictors to meet the different flow requirements of almost any toilet tank. Hands down, this is one of the best toilet fill valves out there.

TOTO TSU99A.X Universal Fill Valve

This is a very good medium-priced toilet fill valve, which will fit many two-piece toilet tanks. It has an adjustable fill level setting to help you save water and it also features mechanics that operate smoothly and are easily powered by the natural flow of water through the toilet.

It is a fill valve (see full specs) that is not only durable but it is made to seal tight to prevent leaks, and that seal will not break down easily over time. After all, you are replacing your toilet fill valve to solve problems, not to create them down the line. The construction of this product is done using plastic parts but quality plastic parts; it doesn’t include any cheap parts.

We found this particular toilet fill valve very easy to install and it came with all the necessary hardware and seals for you to make the installation without having to purchase anything extra.

Replacing a Universal Fill Valve

American Standard 7381.125#400.0070A Universal Fill Valve

This toilet could get a bit pricey, but it is worth every penny. If you are the type of person that likes to do a job only once and do it right then this is the perfect toilet fill valve for you. Remember told adage: the cheap man buys twice.

It is a toilet fill valve (see full specs) that is very adjustable and will fit most every toilet that the popular American Standard has a hand in making. Included right in the kit are adjustable parts such as the refill tube and the refill tube adjustment clip.

This valve is one that we found to be very easy to assemble and adjust. We found it amazing how fast it was to install. The kit for it also comes with everything you need to install it right in the package itself.

How to clean your fill valve

Keys to Finding the Best Toilet Fill Valve Systems

• Avoid Metal Parts

The overwhelming majority of toilet fill valves fail because the metal parts in them corrode over time. So look for a toilet fill valve that has very few if any metal parts on it.

• Low Water Inlet Holes

Some toilet tanks are what are known as low fill tanks so they save water when flushing them. This means the water inlet hole will have to be low on them in order for them to work property. So make sure you look for this feature if you have a low flow toilet.

• Price vs Quality

You will see on our review list toilet fill valves that come in several different price ranges. Just because a toilet fill valve is expensive does not mean it is a good one and vice versa. Shop by features, not by price, because there are some good deals to be had on quality toilet fill valves.

So when you know you need to replace your toilet fill valve then make sure you choose the best toilet fill valve system you can afford, like those we reviewed here because you can’t go wrong when purchasing these. At the very least, keep in mind the important things we mentioned that make a toilet fill valve a quality one. Good luck!

  • Founder of Mechanical Caveman, Beau is an unrepentant tool enthusiast and, sporting deadlift-callused hands and an incongruous beer belly, all-around macho guy. When he doesn’t know re tools, he consults with his handyman and car-repairman buds to give you well-reasoned and cutting-edge info.

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