11 Best Toilet Flush Valves in 2021

Best Toilet Flush Valves

The toilet flush valve is placed in the toilet tank. These valves are available in different sizes so that you can choose the one compatible with your toilet design. Larger valves ensure better flushing than smaller valves. To replace the flush valve in an existing toilet, always keep the current size.

These valves are also designed to use less water. Valvesthat use less than one gallon of water per flush are the most environmentally friendly and may help reduce water bills.

To solve your toilet leakage problem, we have created the best toilet flush valves. Check out this post and buy the best flush mechanism for your toilet.

11 Best Toilet Flush Valves

1. Fluid master Flush Valves

Fluid master Flush Valves

This is the ideal solution to repair a noisy toilet. You can use Fluid master valves in 3.5 per gallon toilet flush or larger capacity. The kit includes the most commonly used 400A fill valve. It contains a solid frame flapper that aligns with the tank drain and allows consistent power flush.


  • Chlorine-resistant flapper
  • Easy to use
  • Highly durable


  • Installation may not be easy

2. American Standard Flush Valve

American Standard Flush Valve

The American standard replacement flush valve consists of a seven-inch tube and a 3.4-inch chain and is a universal replacement for any Champion 4 flushing system. It is made of plastic and metal material and weighs one pound.


  • Long-lasting
  • Certified frustration-free
  • Easy to use


  • Instructions may not be clear

3. Kohler Flush Valve

Kohler Flush Valve

This canister flush valve is compatible with the K-4634 model of the Kohler Cimarron tank. It is Kohler’s original replacement part. The canister measures three inches with a three-inch outlet. The flush valve helps maintain Kohler toilets’ actual product performance. The item weighs 1.2 pounds.


  • Long-lasting
  • Fully assembled
  • One-year warranty


  • Not suitable for one-piece toilets

4. Next by Danco Flush Valve

Next by Danco Flush Valve

Next by Dancois designed to accommodate standard flush valves from 2.5inches to 10.5 inches high. The pack includes a split handle with a flush activator and not compatible with Mansfield brand toilets. The dual-flush valve converts a standard toilet into a two-button, dual flush toilet. It offers a choice of full or low flush requirements. It is suitable for all standard flush valves and reduces faulty toilet flapper, flapper chain, and toilet handle problems.


  • Water-saving
  • Easy-installation
  • Durable construction


  • Does not fit Toto ST454E

5. Mansfield Flush Valve

Mansfield Flush Valve

The Mansfield flush valve is made of polypropylene and ABS material, which will not rust and corrode. The product weighs 0.4 pounds. You can use the flush valve to repair leaky toilets. This flush valve replaces 208 and 209 models and allows you to stop flushing action midway to prevent potential overflow of water. The lightweight flush valve is easy to install.


  • Energy-saver
  • Instant shut-off
  • One-year warranty


  • May not last very long

6. Sloan Valve Flush Valve

Sloan Valve Flush Valve

Sloan flush valve is an exposed manual water closet flushometer, which uses para-flow technology to ensure low-consumption flush accuracy. The product is made of copper and brass castings with a chrome finish. The flush volume starts with as low as 1.6 gallons of water to improve water efficiency.


  • ADA compliant
  • Adjustable tail-piece
  • Three-year warranty


  • May not last longer

7. Korky Flush Valve

Korky Flush Valve

This is a universal toilet flush valve, compatible with most three-inch flush valves, and is easily adjustable with Toto, Mansfield, and other brands. The flapper adopts a flexible rubber design to achieve a tight seal on most flush valves. It solves problems such as toilet leaks, noise, or water refilling.


  • Long-lasting
  • Chlorine-resistant
  • Works with hard water


  • May not work with American Standard toilet

8. BQLZR Flush Valve

BQLZR Flush Valve

The BQLZR Flush Valve is only compatible with toilet tank holes measuring 2.56to 2.95inches. The valve has dimensions of 10.24x 10.63inches. Its design has a good sealing effect, adjusts the tank’s water, and is suitable for one-piece closet toilets.


  • Water-saver
  • Prevents leakage
  • Durable construction


  • May be difficult to install

9. WDI Technology Flush Valve

WDI Technology Flush Valve

WDI Technology replacement toilet flush valve has a two-piece toilet design to prevent leakage, and the flapper valve assembly is compatible with all three-inch flush holes. The flush valve comes in blue, green, and orange. The product weighs approximately 0.4 pounds.


  • Easy installation
  • Lightweight


  • Not suitable for one-piece toilets

10. Plumb Pak Flush Valve

Plumb Pak Flush Valve

Plumb flush valve has 40 percent more efficient flushing using the same amount of water. It can transform any poor flush toilet into an efficient toilet and is compatible with most standard toilets with a two-inch flush valve. It is made of sturdy plastic material.


  • Adjustable height
  • Saves water
  • Easy to install


  • The chain may not be durable

11. EZ-FLO Flush Valve

EZ-FLO Flush Valve

The white color toilet flush is made of high-quality plastic to ensure durability. EZ-FLO’s flush valve is designed for use in Eljer toilets. It has a chrome-finish, corrosion, and rust-free handle and adds a touch of modern and sleek look to your toilet.The package includes a plastic handle, rubber float, and a flush valve.


  • Durable
  • Easy-to-install


  • The chain is too small

Things To Consider When Choosing A Toilet Flush Valve

Before buying the best toilet flush valve, pay attention to the following points. 

  1. Compatibility: Choose a toilet flush compatible with your toilet. There are many valves on the market that have universal fit. Before replacing, be sure to measure the size of the valve.
  1. Water saver: Most toilets are economical and use less than one gallon of water per flush. Choose flush valves with water-saving functions so that you save water expenses.
  1. Installation: Replacing a flush valve can be a difficult task. Therefore, choose a product with easy-to-install features.
  1. Durability: When purchasing a flush valve, always pay attention to its construction. The product should comply with ADA standards to avoid corrosion or rust.

Frequently Asked Questions

1. How do I know if the toilet flush valve is bad?

If the toilet is constantly running or the tank is not filling correctly, it means your toilet flush valve is faulty.

2. How do I clean a toilet flush valve?

To clean the toilet flush valve, close the shut-off valve, empty the water tank, and sponge the remaining water. Follow the instruction manual because valves have a different construction.

The flush valve is designed to release water and flush the toilets. The flush valve provides a way to open the water supply line to the fixture. Many flush valves are universally compatible. To convert a poorly performing flushing toilet into a high-performance toilet, choose from our list of the 11 best toilet flush valves.

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