How to Remove a Thermostatic Radiator Valve

What You'll Need

It is not always easy to manage a radiators temperature with damaged thermostatic radiator valves, and sometimes the easiest solution is simply to remove and replace them. Thermostatic radiator valves for your home are often designed so that they cannot easily come loose, so you may also be reluctant to remove the valve in the first place. You may even be tempted to call in a professional, but if you have some basic home improvement skills, then you can easily remove a troublesome thermostatic radiator valve which is not working. Just follow these simple rules to get your radiator back on track.

Step 1 - Preparation

The most important thing you will have to do before removing the thermostatic radiator valves is to ensure that the water supply is completely turned off. This involves not only turning off the water at the mains, but also ensuring that your hot water system does not have any water inside it which might travel to the radiators. Ensure this by firstly turning off the mains supply of water, and then running a hot tap until no more water is available. Leave the hot tap open in case there is water left in the system. Once this is done, you are ready to remove the valve.

Step 2 - Bleed the Radiator

You will have to bleed the radiator of gas and water inside the radiator case itself. There is a small nozzle on the side which, when depressed, releases gas and also drips water. Place a basin and some towels under this nozzle, and then depress it using the tip of your screwdriver. Don't release the pressure too soon, or you will have gas and liquid still in the radiator when you come to remove the valve.

Step 3 - Remove the Valve

Once the radiator is bled and the water turned off, you are ready to remove the valve. Most valves can simply be pressed off by lifting it with the wrench, but some have been screwed into the pipe. If the latter is the case, then you will need to unscrew it using the screwdriver which you opened the nozzle with. Take care when unscrewing the valve, as the screw might pop off suddenly, and either fall into the valve, or disappear.

Step 4 - Finishing

Once the valve is completely unscrewed, you should be able to slide it off using the wrench. There may be caulking around the edges, so take care to pry it off gently, without using too much force in the wrong area. You are trying to remove the valve, not break it completely, after all. Once this is done, your radiator should be free of the valve, and you can do whatever you wish with the part.