Missing port valve

[lame plumber]

Leave the boiler. You will probably shyt yourself when it starts boiling if you've never done it before anyway.

replaced a cyl for a mate last year and boiled away the coil airlock, as it was thumping away I went looking for the Mrs to get a coffee made for me as I was parched, found them both on the front lawn pretending to be gardening, must admit the old ideal was thumping a bit

 

[TomLane]

Found a air vent next to the cylinder! Bled that, air came out, pipe hot!

Still no hot water though! :-(

 

[TomLane]

What am I missing here? Even tried blasting cold water up through hot on a deck mixer?!

 

[Whyme]

are both the pie going into the coil (top flow) and the one underneath (return bottom) both hot if not its not circulating through the coil (could still be air or disturbed muck). if they are there could be an air lock further away on the return.

 

[Whyme]

What am I missing here? Even tried blasting cold water up through hot on a deck mixer?!

no hot water or not hot water.

 

[TomLane]

Got it! Joined cold water mains feed to cold water feed to cylinder & blasted it out that way!

 

[TomLane]

I know the solution to this problem was probably very obvious to you time served plumbers but this was all new to me. I guess I'm lucky enough to haven't had an airlock so far.

Thank you all for helping though. I'm now confident that should something like this occur again, with the knowledge you guys have imparted & myself learnt I will solve the problem!

Thank you.