Venting a radiator

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Now and again we have to bleed a radiator because of entrapped  " air "  when the bleed screw is removed, neither air or water comes out, and we wonder why.     The cure is fortunately very simple,........  Get a sewing needle and poke it into the hole, and you will hear the hiss of air, replace the little screw.     Job done.

Its surprising how many plumbers dont know this trick !

 

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