Woke up this morning to find water venting out of my expansion vessel (zilmet 18 litre). I managed to isolate the water to the vessel and the leak has disappeared. I removed the pressure from the top of the vessel and unscrewed it from directly above the hot water tank. I have now purchased a cimm 18 litre replacement pre pressured to 1.5 Bar. Is it a simple task of just screwing it back into the housing left by the old vessel or do I have to do anything else? I notice a black rubber cork on the inside the screw do this have to be removed or will the pressure of the water do it once it has been fitted?
Regards
Agrippa
Regards
Agrippa