Best Toilet Fill Valves Reviews

For many, the toilet is simply an essential part of the home that you need. But for those of you who are savvy with the environment there is so much more in finding the top rated toilet fill valve. Perhaps everyone should understand that by buying the best replacement toilet flush valve for your location you can improve the efficiency of your toilet, which in turn reduces water usage and ultimately saves you money on your water utility bill!

You will probably just flush your toilet and not give it a second thought but did you know the least effective toilets on the market can use up to 5 gallons in a flush and based on the US national average, each toilet is flushed 5 times a day. That is an astonishing 9000 gallons of water a year! The more efficient toilets use only 2000 gallons of water a year. When you think there are 350 million toilets in the US alone that is an incredible draw on the water resource and a lot of waste water to process by utility companies. Each of us can do our bit by ensuring the toilet fill valve in your toilet is as efficient as can be.

Consider replacing your toilet with a new one:

The different water types can also play a big part on your toilet efficiency. For those of us in soft water areas there is far less strain on components, however, if you live in a hard water area the calcium, magnesium and other mineral deposits can seriously affect your toilet in a variety of ways. This can include up to half of toilet pipe diameters being clogged by deposits to your toilet fill valve operation being severely hindered by the deposits. If you live in a hard water area it is essential you have the best toilet fill valve for hard water fitted in your home.

Of course, you may simply have a requirement to replace a broken or noisy toilet fill valve! Or you may just want to upgrade an old valve before it fails.

Here we will assist you in your quest to be environmentally friendly and fiscally savvy by reviewing the 5 best toilet fill valve kits available on the market.

1. Fluidmaster 400AH High Performance Toilet Fill Valve Kit

Californian plumbing giant Fluidmaster has been producing high quality plumbing equipment for over 60 years and their 400AH high performance model is a number 1 bestseller on Amazon. The latest model in their range, it offers a whole new level in ecological benefit.  

This extremely efficient toilet fill valve can be used on 1.6 GPF and 1.28 HET toilets, including those manufactured before 1993 that operate at 3.5 GPF.  Thanks to the quality construction of the fill valve it is one of the quietest valves available anywhere today. The Fluidmaster 400AH high performance toilet fill valve kit can be fitted to virtually any toilet thanks to its universal fittings. The valve has a great adjustable range of between 10-15 inches and weighing a very light 11oz this valve is compact at only 3.1 x 12.5 x 4.5 inches.

To completely optimise the efficiency of the Fluidmaster 400AH high performance toilet fill valve kit, users should buy a Fluidmaster brand toilet flapper to ensure they have the best toilet fill valve and flapper available fitted to their toilet.


2. WDI B3260 Universal Fill Valve for Most Toilets

Global giant WDI have produced a very popular product in the B3260 model. This wide reaching company has a depth to its manufacturing base so the WDI models are less expensive than competitors but they certainly do not scrimp on quality!

This easy to install toilet fill valve fits nearly any standard of toilet, is a very light 8 oz and adjusts to heights between 8. 25 and 12.25 inches.

The B3260 universal fill valve measure 5 x 5 x 20 inches and comes in black. The consumer reviews for this product state just how quick the valve is to fill the toilet, it also highlights perhaps one of the unsung hero aspects of this valve; the adjustment and operation can be controlled from above the water level so no wet hands!

A great all round toilet fill valve that won’t break the bank.


3. Plumbcraft Eco-friendly Adjustable Perfect Flush Anti-siphon Toilet Fill Valve – Fits Most Toilets

Plumbcraft’s flagship eco-friendly anti-siphon toilet valve boasts a very significant water saving of up to 38% and can be fitted to nearly all two part toilets across the country. Using the unique Plumbcraft colour coded water adjustment caps you will be able to optimise your water flow to suit your needs. Do not worry if you aren’t a plumbing expert, the instructions are very clear and even the most novice plumber amongst us will be able to follow them.

Another unique and innovative feature of Plumbcraft’s eco-friendly valve is its patented ‘anti-siphon’ technology, developed from 50 years of plumbing experience which ensures drinking water is kept safe.

The Plumbcraft eco-friendly valve allows between 8 to 13 inches of adjustment after installation and perhaps different to many other products on the market, kit spares can be procured for replacing piece part spares.   

The plumbcraft eco-friendly valve is very light and the instructions for installation very easy to follow. Amazon reviews for this toilet fill valve are high and it is a top seller.


4. KOHLER GP1138930 Universal Fill Valve Kit

Wisconsin based engineering giant KOHLER is proud of its 140+ years of experience in plumbing and the KOHLER GP1138930 universal fill valve kit is one of Amazon’s highest sellers across the US and is annotated very respectfully as ‘Amazon’s Choice’ in the toilet fill valve category.

Weighing 8.8 oz and measuring 12.5 x 3.5 x 3 inches the valve is renown for KOHLER’s durability, with reviewers highlighting just how reliable it is in both soft and hard water areas.

While the KOHLER GP1138930 fill valve is extremely efficient and easy to install, it is sadly only compatible with KOHLER products, so if you don’t have a KOHLER toilet you’ll need to choose a different toilet fill valve, which is a real shame given its excellent reputation.


5. Korky 818BP QuietFILL Toilet Fill Valve and Flapper Kit, 2-Inch

Scoring very highly in Amazon reviews is the innovative and easy to fit toilet valve from Korky, the Korky 818BP QuietFILL. This model is universal and will fit most toilet models out there with its 7.75 to 13.5 inch adjustment via the Korky twist lock design. Not only have Korky embedded this innovative design, they have incorporated a sentiment in the water to ensure those in hard water areas have a fully serviceable toilet fill valve despite the minerals present.

From their Wisconsin headquarters Korky offer a high quality toilet fill valve in this model, the valve is extremely quiet and compact, at only 4 x 2.2 x 7.8 inches it is discreet and effective although it is slightly heavier than other products at 11.2 oz.

The Korky toilet fill valve is a highly recommended Amazon product and it is really easy to see why. For optimum efficiency users should ensure they fit the Korky flapper.



There are some quality toilet fill valves available on the market and here we have reviewed the Amazon top 5. Obviously your individual needs will determine which is the best toilet fill valve kit for you but it should be clear to see 1 of the 5 listed here will fulfil those needs. All of these toilet fill valves which are listed are energy efficient, easy to install with clear instructions and easily adjustable. In addition to these qualities, each brand of toilet fill valve has its own unique feature which sets it out against the other competitors which may influence your decision in your purchase.

For hard water areas it is clear the Korky stands out and meets your needs. If you own a KOHLER then the GP1138930 is ideal for your KOHLER toilet. For the eco conscious amongst us the Plumbcraft Anti-Siphon toilet fill valve is an ideal solution in your quest to be green. If you aren’t entirely sure what you are doing with toilet repair but fancy yourself as a bit of a DIY money saver then the WDI B3260 is perfect with its easy to install instructions and easy adjustment. The king of the toilet fill valves though has to be the Fluidmaster 400AH, the Amazon reviews and numbers bought can’t be wrong, after all, the customer is always right!

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