Next up, we need to isolate the radiator from the rest of the heating system. Step 2 – Isolate the Radiator in Question Inevitably there will be some water escaping when you replace the bleed valve, so it is best to make sure that the water is cold enough to touch. The parts are inexpensive too.įirst, we need to turn off the heating system and let it cool. Luckily, this is another one of those simple tasks that you can do without panicking and calling out a plumber to fix it for you. If you have had to remove the bleed plug for any reason, you may be struggling to get a good and watertight seal.īleed plugs can often be removed when a system needs draining or the radiator needs flushing and may be due to age, wear and tear or poor technique, you may end up struggling. AestheticsĪnother reason could be because the bleed valve has been painted over and doesn’t look very good and you want to have nice shiny fittings on your radiators.īleed valves that have been painted do not look very appealing and once the radiators have been bled again, the paint will have cracked which probably defeats the object of painting it in the first place. You could try removing the bleed plug and attempting to reseal but, in most cases, it is best to just buy a new one. One of the most common reasons for replacing a bleed valve is that the bleed valve has failed and is leaking.Ī leaking bleed valve can cause havoc in the pressurised system and will need rectifying sooner rather than later. There are a number of reasons why you need or want to replace your bleed valve but don’t worry, it is not a difficult task so keep reading and we will cover that shortly. Why do Radiator Bleed Valves Need Replacing? With most common radiator designs, at the top of each end, there will be a plug inserted – one of them will be blank (smooth finish) and the other will have some kind of opening or fitting that can be opened with a tool or key – this one is the bleed valve. They’re typically placed at the top of the radiator because any air that will be trapped inside will be forced upwards by the pressurised water below. Radiator “bleed” valves are designed to “release” a small amount of air and/or water from the system in order to reduce the level inside. More You Might Like What are Radiator Bleed Valves?.Step 5 – Wrap Your New Plugs with PTFE Tape.Step 2 – Isolate the Radiator in Question.Why do Radiator Bleed Valves Need Replacing?.
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