Do all toilet fill valves fit all toilets?

Author: Maryse Corwin  |  Last update: Thursday, May 29, 2025

Because toilet fill valves are universal, you do not need to buy one from the manufacturer of your toilet.

How do I know which fill valve fits my toilet?

Measure a fill valve's height as shown below, from where it mounts to the tank to its top. You'll also want to measure the depth of the tank itself, from the bottom interior. This will help determine the proper size for a universal fill valve, should the original no longer be available.

Are all fill valves for toilets the same?

It's important to note, though, that on high-end toilets, you may come across different fill valves. That's because these types of toilets often have unique flushing components so that they can have more flushing power using less water.

Are toilet valves interchangeable?

All though there are many different types of flush valves most flush valves are interchangeable and depend on the size of the ceramic flush hole that is bored through the tank by the porcelain manufacturer.

How to measure toilet fill valve size?

To identify what size is needed measure the width of the flapper from end to end. If the flapper measures 3 inches across select a 2 inch flapper (like the 502 Fluidmaster model) if the flapper measures 4 inches across select a 3 inch flapper (like the 5403 Fluidmaster model).

How Toilet Fill Valves Work

Is it hard to replace a toilet fill valve?

Knowing how to replace a toilet tank fill valve isn't hard to learn. Most do-it-yourself homeowners can handle this project in about 60 minutes. All you need is the most basic understanding of how toilets work, a replacement fill valve kit, and the instructions above.

How often should I replace my toilet fill valve?

Replacing a toilet fill valve is a normal maintenance that needs to be done occasionally to keep your toilet running smoothly. Fill valves typically have a lifespan of 5-7 years, depending on the type of water you have. Some water sources carry sediment that can build up internally, causing it to run inefficiently.

Are toilet bowl valves universal?

Flush valves are usually 2-inch or 3-inch in size. Different manufacturers offer various designs, meaning flush valves are not universal. This is why it's essential to know the type you have before replacing your toilet's flush valve.

How much does it cost to replace a fill valve in a toilet?

Valve Replacements: Valve replacements cost $50–$150 and resolve noisy or slow toilets. The fill valve refills the tank after each flush, the shut-off valve controls water flow, and the flush valve controls water coming from the tank to the bowl.

Why do toilet fill valves fail?

The root of the problem often involves mineral buildup or worn-out parts. Replace the fill valve if troubleshooting doesn't work or if it's older than five years. The average cost to replace a fill valve is between $50 and $150.

Does it matter what toilet fill valve I use?

Because toilet fill valves are universal, you do not need to buy one from the manufacturer of your toilet. Bardi will provide you with excellent universal toilet fill valve repairs, replacements, and maintenance services.

How do I know if my toilet is a 2 inch flush valve?

To quickly determine your toilet's flapper size, look at the flush valve drain opening at the bottom of your tank. If your flapper is about the size of a baseball or an orange, you need a two-inch flapper. You need a three-inch flapper if it's more like a softball or grapefruit.

Are toilet valves standard?

This flush valve has been standard on toilets since Korky first introduced it in the 1950s. Designs vary, but most consist of a two-inch drain pipe secured to the bottom of the tank by a plastic lock nut; an overflow riser to prevent overfilling; and a rubber flapper that covers the drain opening.

Are toilet fill valves all the same size?

A flush valve is a part inside the tank of a toilet that moves the water into the bowl. Toilet flush valves come in different sizes ranging from 2 to 4 inches, depending on the toilet design. If you are thinking of buying a new toilet, pay attention to the type of flush valve it has.

Will Korky fit a Kohler toilet?

Korky designs many types of replacement toilet parts to fit Kohler® toilets.

Why does my toilet keep running?

Usually, when your toilet keeps running it's down to three common reasons: Your fill valve requires adjustment. The flush mechanism is leaking. The overflow pipe requires adjustment.

Should I replace the flapper or flush valve?

Common Signs Your Toilet Flapper Needs Replacement

If you hear the water running continuously in the toilet tank or if it takes too long to fill, you probably need to replace the flapper or the flush valve. Another sign that it's time for flasher replacement is when the toilet flushes on its own occasionally.

Should I replace a 20 year old toilet?

But, the rule of thumb is to replace your toilet every 25 years, due to damage and regular wear and tear. If you have an older toilet, you should consider newer model toilets as they will be more efficient in conserving water and utility costs.

How much does a plumber charge to change a fill valve in a toilet?

Replacing the fill and shut-off valve costs an average of $120 – $250. This includes the cost of the replacement parts and the cost of labor.

How do I know if my toilet needs a new fill valve?

Measure the water level in your toilet tank. It should be about 1 inch below the top of the overflow tube. If it's significantly higher or lower, your fill valve may need adjustment or replacement.

Can a toilet fill valve go bad?

Debris that builds up over time inside the water system, including the valve body, supply line or shut off valve (at the wall) can restrict the flow path of water and slow down the valves filling speed. Toilet fill valves in use for a period of 7 years or more can have their working parts start to wear out.

Previous article
How do you winterize a summer home?
Next article
How much does it cost to replace copper with PEX?