stuck valve

  1. MarkFS72

    lockshield valve Turns but doesn’t open or airlock?

    So I’ve had a rad in the conservatory for years which the pipework is spurred from upstairs and it’s gone cold with cold pipes too for the first time. Expecting a simple fix I bled it, made sure the valves were open but no effect. So now I suspected a stuck valve (though both were kept open...
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