Shower Knob Turns But No Water Comes Out? Here’s the Solution

More or less, we all face problems with our home plumbing system, and struggling with a faulty shower knob is one of those. There’s a common complaint that the shower knob turns but no water runs through the faucet. 

To fix this, you need to find out where the problem is and take action accordingly. Here you will know how a knob works to keep the water supply on through the faucet and what keeps the knob turning without any water dripping. And finally, you will figure out how to fix this problem.

Shower Knob Turns But No Water Coming Out – A Quick Fix

To begin with, let’s take a quick look at what causes a spinning shower knob and what the solution is. 

Shower knob might be looseTighten the knob
The splines inside the knob might be strippedRepair the knob or replace it
Shower valve stem might be strippedRepair the valve stem or replace it

Now that you know the reasons, before digging deeper into the problem, we need to understand how a faucet works.

 A series of splines or small gears inside of the shower knob is interlocked with another series on the valve stem of the faucet. When you turn the knob, the splines on the knob make contact with the splines on the valve stem, causing the flow of water through the faucet.

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Years of usage causes the splines of the knob or the valve stem or maybe both to be corroded or stripped. As a result, it becomes loose, and the shower knob turns and turns no water comes through the faucet.

Whatever the reason is, let’s figure out how to make it work.

Here are some easy methods of how to fix a loose or stripped shower knob.

Stuff that you will need through the process are:

  • Flathead Screwdriver
  • Phillips Screwdriver / Allen Key
  • Plumbing Tape

If the Knob is Loose

Sometimes, the knob becomes loose, and simply tightening it will fix the problem.

Before getting to work, it is safe to turn off the water supply.

Now, take a flathead screwdriver and use its head to simply lift and to open the metal covering at the center of the knob. And here you see the screw. If you have a handle instead of a rotary knob, you may find the screw at the base of the handle.

Now use a Phillips head screwdriver or an Allen key, whichever fits your screw to tighten it. That’s it! That’s all you need to tighten the shower knob. Yeah, it’s that easy.

Put the metal lid back and check if everything works alright. If still the knob spins and water doesn’t come out, then the problem might be on the splines of the knob or the valve stem.

If the Knob or the Valve Stem is Stripped

If tightening the screw inside the shower knob doesn’t work, then you need to take the knob off to see where the problem is.

  • Open the metal cover like before and use your screwdriver or Allen key counterclockwise to get the screw out.

Don’t forget to put the screw somewhere safe because you won’t like it getting lost.

  • Now, bring the knob out and take a look. Maybe the stem or splines of the knob are stripped. Don’t worry. Plumbing tape can add more life to your shower knob.
  • Take a plumbing tape, also known as Teflon tape, and wrap it around the valve stem. 3 or 4 layers of tape will be enough. Don’t overdo it; otherwise, you can’t fit the knob back on. 
  • Put the knob and the screw back in place and tighten the screw properly.
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And you are done!

If the knob or the valve is worn so heavily that it can’t manage to have a good grip anymore, then it’s time to replace the knob with a new one. The process of replacing the knob is the same as opening it and putting it back, as mentioned earlier.
Don’t forget to take the old knobs and screws with you to the hardware store to find the exact match for your old fittings. If your preferred brand is not available at the store, a universal faucet handle is an alternative.
If the valve stem is damaged, you need to replace the entire valve. And it’s a bit tricky to remove it. It is then better to take help from a professional.

A Helpful Tutorial You May Need!

Frequently Asked Questions (FAQs) 

How do you fix a spinning shower handle?

One reason for having a spinning shower handle is that it might be loose. To fix it, you have to tighten the screw that holds the handle. A stripped valve stem is another reason, which can be fixed using plumbing tape around the stem. But, if the valve stem is so worn and unable to grip the handle, you need to replace it.

How do you know if your shower valve is bad?

If the shower knob or handle keeps spinning even after you have tightened it or fixed it using plumbing tape, and no water comes out, then the problem might be with the shower valve. If this is the case, you need to replace the valve.

Bottom Line

Finally, the time is over to complain that my shower knob turns but no water comes out. Now you can fix it in no time, and the best part is it doesn’t require you to spend much money.

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