are you a plumber, I know what he posted and I know what im on about do you
Plumber and heating engineer for about 10 years now. Thanks for asking. Not on this site to start grievances. If you read the post the OP has no problem with the heating system and only a fault when the toilet is flushed. The two systems are completely separate.
would you change the oil if you had trouble changing gears?
it has nothing to do with your heating.
Thank you bengasman
To the OP,
It sounds like you have a torbeck valve fitted and if the stop tap wasn't fully open in the first instance you may have been lucky and it has reduced the pressure enough to allow the valve to operate properly albeit with a slight banging to start with. These valves have a pressure reducing kit supplied with them that should be fitted to systems that operate on a higher pressure. if the stop tap is now fully open and the pressures have changed this may be a cause for the noises that you are experiencing.