is it a leak or not a leak

[web4185]

hi
i live in a masionette and have a glow-worm boiler from the boiler the pipes run over the top through the loft in the runs of the pipe work there is afew vertical pipes going to what looks like a air vent at top my question is i have noticed 1of these slightly leaking is this ok or has this got to be replaced i have been losing some pressure over a few weeks but nothing drastic

 

[wiggikins]

have the leak repaired,then you should stop the pressure loss problem

 

[methaneman75]

sounds like auto air vent is passing water slightly, go to local merchants and get a new one, fitting should be easy as highest point of system so no big drain down required, just drain boiler at prv or boiler drain cock to release some pressure

 

[bengasman]

so you found a leak.
should you repair this or wait til the house floods?
will have to look that one up i think