Mehreen Alberts
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Thermostatic radiator valves – also known as TRV, thermostatic radiator vales have a temperature sensor. The sensor turns off heating automatically when it reaches the desired temperature and switches it on again when the temperature drops to maintain a consistent and more precise temperature. As an example, let’s use the spring model. The other TRV has a wax coat and operates in the same way. The metal spring expands when the temperature is high. Plugs the gap from where the water comes through (the seat) 🔥 When the radiator cools down because it doesn’t have a steady flow of hot water, so should the room and when the room does become cold the metal spring contracts and reopens the sealed gap which causes the flow of hot water to commence 🔥
First, check that your radiator valve is in good condition. It may need to be repaired immediately. In addition, consider changing your manual valve for a thermostatic radiator valve – TRV. If you’re ready to change for TRV, you’re in luck because these devices are sturdy, last long and can create comfort in your home by regulating the temperature. There are also aesthetic aspects. Your radiator valve should match the interior of your house. Whatever the reason for changing your valves, always remember to consult with local radiator installers first, if you’re not as handy with DIY work.
You can fix it by unscrewing the head of the TRV and taking a look at the pin – is it sticking up out of the body of the valve? If it’s stuck inside the valve or stiff, a spray of WD40 will probably fix it. To pull the item out, you can use a pair long-nosed scissors. If it’s stuck right inside, try giving the valve a gentle tap around the outside edges, around the pin, with a hammer. If this doesn’t work and the pin is still stuck inside the body of the valve, try the seasoned plumber’s trick of gently tapping on the actual pin, and it should pop up, post-WD40. For their insight, we are grateful to Arrington Judd (Sheffield, United Kingdom).
Solution and Maintenance: Turn the TRV on to its highest heat setting, usually number 5, which will fully open the valve. You should then be able remove the thermostat removal nuts by yourself. Once the thermostat is removed, the plunger, or piston should appear. It should be easy to press and spring back when released. Give it some WD40 to loosen it up if it is too stiff. To keep your TRV running efficiently, it is worth giving it an annual inspection and applying a squirt WD40. For their insight, we thank Pheng Bauman.
