- 3 Mar 2010
- Reaction score
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?