VAG_dude wrote in news:bd4932e4-0e04-473a-a550-
:

When you re-pressurise an expansion vessel in a boiler are you
supposed to leave the drain cock open once you have got the pressure
to 0 bar ?


It does not matter if the drain cock is open or closed when pressurising
the expansion vessel as long as there is zero pressure
in the system whilst this operation is carried out.

--- news://freenews.netfront.net/ - complaints: ---