How to repair toilet fill valve

A toilet fill valve is the thing that is found on most toilet flushing mechanisms. It is essentially the thing that you activate when you press onto the flush lever, which lets out the water from the flush tank, and allowing it fill up again to a certain level for the next person to use the flush. The cleanliness of your toilet is screwed it this gets broken, so we here to show you ways on how to repair toilet fill valves.


Okay, our main keyword here is “repair”, so we’ll do our best to provide a solution to your toilet fill valve without ever getting into the option of replacing it with a new one. But before we can repair toilet fill valves, we must first make sure that the problem is something that we can solve by just tinkering a little bit with its mechanism.

From the most simple (and possibly mundane) solution, check whether the chain connected to the lever is properly attached to the flush lever. In some instances, the automatic water filler mechanism causes the chain to be disconnected from the lever. This might be due to the weakening of the chain due to mineralization, or hook just sometimes falls off. If the problem is as this simple, you just have to reconnect the chain properly and voila, problem fixed for your bathroom.

However, there are more serious problems regarding toilet fill valves other than the mundane problem that we have just showed earlier. Some toilet fill valves fail to fill the water tank up again. Now, this can be caused by a lot of factors, but it is usually caused by a failure in the spring mechanism of the toilet fill valve. It may be possible that the mechanism is simply stuck due to, well, mineral deposits again. A simple solution for this is to clean the toilet fill valve, free it of any mineral deposit and reinstall. If the toilet fill valve still fails to work, then we go to our next problem.

Ultimately, toilet fill valves have mechanisms that allow the seal underneath the water tank to open, letting out the water needed for the flushing action. The trigger for this seal can sometimes malfunction as well. And do you know who the culprit behind this is? If you had guessed mineral deposits again, then you’re absolutely right! Well, it might not be an actual part of the toilet fill valve, but it’s still part of the flushing mechanism anyway, so it’s all worth the try.

If all else fails, then it’s probably high time that you replace that defective toilet fill valve. And you would have to do it quickly, because time is of the essence, for the level of sanitation of your toilet is at risk during each passing second that the toilet fill valve is broken or missing.

About the author

Nilda Nora

I love writing about interior design.

  • As a Toronto plumber, who does Toilet Repair on daily basis, I can tell the article is quite useful. I will recommend it to read for some of my clients.