Quizzes & Puzzles19 mins ago
old radiator
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For more on marking an answer as the "Best Answer", please visit our FAQ.Splatt, Have you checked the top corners of the radiator ? Older type radiators were manufactured without provision for " bleeding " on the actual radiator. Two 1/2" threaded male plugs would be fitted into the top two connections, one of which would have a bleed screw incorporated into it.
If this is not the case with yours, and you have 2 plugs without a bleed screw, you need to replace one of the plugs for a replacement one which incorporates a bleed screw. This can be purchased from your local plumbers merchant or possibly B+Q type store.
Isolate the radiator by turning off the 2 valves either side of the radiator . Remove one of the plugs, (you may need a radiator-valve key to do this). There may be a slight spillage of water, but if, as you suspect, there is air in the radiator, there will be no water.Fit the replacement plug using PTFE tape on the thread,open the valves and remove any air via your newly fitted bleed screw.