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Toilets come with their own set of issues. One issue is that of a faulty or leaking toilet flush valve.

What is it?

A Flush Valve is an important element present within a toilet cistern that is responsible for emptying the contents of the toilet into a sewage system via a drainage pipe. A toilet flush valve is a plastic or metal device that connects to the cistern tank’s bottom. A rubber flapper is used to control it. The flapper may also be made of neoprene. 

How does a toilet flush valve work?

When the button, handle, or lever of the toilet is pressed, a chain or lifting wire attached to the grip rod pulls the flap away from the valve, allowing water to drain out of the reservoir and into the toilet bowl. Water running through the flush valve and into the porcelain bowl is one of the most aggravating toilet tank issues. The level of water in the tank continues to decline as a result of the leakage in the valve, prompting the toilet fill valve to cycle in a vain attempt to fill it right back.

A traditional toilet’s fill valve working is straightforward. It’s just a tube with a shut-off valve that connects to the toilet tank’s water supply via a connector at the bottom. When the water level in the tank hits a predefined height, an air-filled cup linked to the valve starts floating in the tank. The floating cup or ball shuts off the valve.

How to know if the flush has worn out?

A lot of times, the toilet valves will wear out. But how do you know if your toilet valve has aged?

 Humming sounds:

When the metal pieces of a bygone ballcock-style fill valve age with continuous usage, then the valve may not be fully open and close or may not open and close smoothly. Ultimately, the force of the water pouring through the opening can produce some unpleasant sounds.

The very first sign that liquid isn’t running as readily as it should is a faint, droning, or humming sound.

Worn out Flapper:

A leaky flapper slowly empties the tank and forces the fill valve to keep running, but if the fill valve is wearing out, the toilet will also run. By placing color in the tank, you can see if the flapper is working or not.

Place dye in the toilet cistern and wait a few hours. You should be expecting to see a color change. If the color changes, your valve is fine. If it doesn’t, the problem is with the fill valve.

Higher-water level:

 Another indicator of a faulty water valve is a higher than the normal water level in the tank. If this is the case, the valve is also to blame. In any case, instead of throwing the valve, you might be able to change it.

Replacing the toilet Valve:

Materials needed:

  • A valve repair kit according to your toilet’s model.
  • Sandpaper.
  • Sponge.
  • Screwdriver.


Again, we have solutions to all your problems. Replacing a flush valve does not require professional help from a plumber or anything of that sort. You can do it yourself, and it is not rocket science. So let’s go over the steps you can follow to replace your toilet flush valve.

  1. The first step in replacing a toilet flush valve is to turn off the water supply completely. So just close the shut-off valve that you’ll find behind your toilet. By turning the valve handle clockwise fully, the water supply will turn off.
  2. Flush the toilet to remove the majority of the water from the reservoir tank. Hold the flush lever pressed until the tank is entirely flushed to remove as much liquid as possible from the reservoir. 
  3. Both the tank ball assembly and flapper are typically held in place by a bracket that clamps over the overflow tube. Uninstall any brackets and the flush lever chain, as well as the old flapper. Also, make sure you remove guide wires from the tank. The outer portion of the valve should be all that remains of your toilet tank. Remove everything else. 
  4. The flush valve, which regulates the movement of liquid downwards into the porcelain bowl, will probably be a rubber flapper or a spherical arrangement in the tank. 
  5. After the tank has been sucked dry and the original flapper has been deactivated, the tank still won’t be completely devoid of water. Your job is to get rid of as much water as you can. So, Soak up the remaining water with a loofah, sponge, or cloth until the tank is completely empty and dry.
  6. Clean the old drain valve seat with sandpaper or steel wool and get rid of any dirt and debris that might be clinging to it. You want to start off with a clean surface.
  7. You will find that the sealant ring has paper on top of it. Before removing it, pay close attention to its positioning, so it is in the right spot. Place it at a 45 ° angle towards the main front side of the tank. The position should be such that the flapper tank’s base can easily move and expand completely when the chain is raised.
  8. Once it is in the right position, it is now safe to remove the paper. Carefully remove off the top of the sealing ring once you’ve found the right spot. Put the flapper component in the right location over the sealant ring and press down pretty hard to place it.
  9. The lift chain must now be attached. Attach the chain connection clasp to the flush rod’s closest hole, then link the plastic chain onto the hook with enough slack to allow for movement.
  10. Switch on the water and wait for the tank to fill up before checking the flushing. Flush it and see if it is working properly. Adjust the chain if it is not working, and clip off the excess chain links.

See? That wasn’t so hard! With the right valve replacement kit, you can replace the valve in a jiffy and have your toilet working as well as new! Toilets can be annoying sometimes, but we can’t afford to have anything wrong with them because it’s a messy business!

What Are Others Saying?

How To Replace A Toilet Flush Valve – DIY Plumbing – The Expert Plumber

Fix a Running Toilet…Fill Valve Replacement — by Home Repair Tutor

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