Shower knob turns but no water

Shower knob turns but no water. If the knob is turned, but no water comes out of the shower, then the shower may be clogged.

The knob may be free and turn, but the internal mechanism remains unmoved, and the shower doesn’t open. The water pressure may not be enough for it to climb the shower pipe.

I returned from pratie and entered my shower. I turned the knob and waited for the water to come, but surprisingly no water came as I waited for minutes.

With shampoo on my head, I moved the knob again, but there was no water coming from it.

With shampoo on my head, it would be embarrassing to call a plumber, so I checked the shower by myself. The shower was not giving water, so I fixed the reason why there was no water from the shower.

Shower knob turns but no water

Getting in the shower and waiting for the water to cool you is great, but if the wait doesn’t stop and the water doesn’t come out, it’s devastating.

Sometimes the knob of the shower turns, but the water doesn’t come. There are reasons why the water doesn’t come out.

There may be no water through the supply. The main water supply valve may be closed. There can be clogs in the shower pipe. The water line can develop clogs.

The water pressure may be too low. The shower head can be faulty. The knob may be free and turns from the cover.

No water

no water

If your shower knob is turned, but no water exits the shower head, then first assume that there is no water coming from behind. The water comes from the principal supply line, but there is a valve on the main supply one as well.

The valve on the primary supply line can be off. There won’t be any water if the primary water supply doesn’t;t give water.

If the valve on the main supply line is off, then try the main supply line’s valve on and see if you receive water from the shower.

Check other taps if the water is not coming from the shower to know if the shower is faulty or not. If not, then the primary water supply line may be on, but the water line may be disconnected or connected with some other line.

The main water line may be damaged, so no water comes from the main supply. The main supply line receives water from behind. The water may not be coming from behind.

Damages in the main supply line, like cracks and leaks, can cause there to be no water to the line. Clogs in the main line are also common.


Suppose there is no water because of the primary supply line. Turn the main valve on it. The water will start coming. If not, check if the chief supply is disconnected.

Connect the water supply line to the right lines and tighten them with a wrench.

Check for leaks in the main line and fix the leaks or replace the pipes that have cracks.

Suppose there are clogs in the main line. Use chemicals to clear the clogs inside the main line or replace the pipes when there are cracks in them. Read more below.

Low pressure

low pressure

If the main water supply is functional and water is passing through it, then the water may not be coming to the shower because of the pressure.

The pipework of your house may have been done in a wrong manner, so that’s why more pressure is needed by the shower.

The whole area of your town may have a low-pressure issue because of incorrect pipe installation. The water level may be low, so the pressure is not being built.

If the water is not enough to rise, then the water won’t come out from the shower, even if it’s on.


If the pressure is the reason the water is not coming from the shower, then a plumber can help you build pressure.

The installation of the pipes can be the reason, so only a plumber will correct the pipe installation. Low water should be increased to get pressure.

Free/Faulty knob

freefaulty knob

The reason for the knob turning but no water coming is not mentioned by anyone is the free knob. The knob needs to be turned around to open the shower, but sometimes as you turn the knob, no water emerges.

The reason is that the knob is turned but not completely by complete means that the cover of the knob you see outside is the only one that has turned.

The cover of the knob may be made of metal or plastic. Both metal and plastic knob covers have teeth or lines that cover the internal valve. The knob is turned, and the valve is moved with it.

Still, if the teeth of the cover or the valve are not aligned, or the teeth have dispersed, there will be no grip inside, and only the knob from outside will move and not the internal one. Read more below.


If the knob is free because of faded teeth, then remove the knob and try moving the internal valve with a plier. The valve will move, and the water will come out.

If the internal teeth have faded, replace the internal valve, and if only the teeth of the knob have faded, replace it with a new knob.

Faulty shower head

faulty shower head

If the water pressure is enough and the knob is working, but the water is not coming from the shower, then the shower head may be faulty.

The shower head encountering faults is also common. You may have a showerhead that has clogs in the holes.

Minerals from the water clog the holes in the shower head. The shower head won’t give water to them.

Minerals develop in the showerhead and clog the showerhead faster, as the holes in the showerhead are small.

The showerhead holes, when clogged, can make the fixture of the head reach the point where it can break.

The showerhead will trickle, and no water will come out when that happens. The shower head can have other faults as well. But clogging the shower head is the most common one.


If the shower head has clogs into it and the water doesn’t come because of the shower head, the small pins or using chemicals can help you.

However, pins or needles should be tried first. Turn the knob before you use pins and clear the minerals in the shower head.

Push the pin or the needles in the hole and make sure that the needle gets inside them. The minerals will move aside, and the clogs will open.

Using pins to care for the showerhead is a temporary fix. You may take the shower head apart and clear the cogs inside manually. You can replace the shower head as well.


Suppose you have a shower that doesn’t give water even after turning the knob. You may have clogs in the water line or the shower pipe.

There may not be water from the source. The showerhead can have clogs as well. The water diverter valve can malfunction. Thanks for reading!

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