Originally Posted by
stirlsilver
This is a very good point which I hadn't thought about! I went back and had a read of AS1425 and found the following:
It shall be possible to operate the service valve for the purpose of servicing, or a filler shutoff valve if fitted, in the installed position. The valve may be arranged so that it can be operated from some internal area of the vehicle.
If this is the case, the sealing of the compartment or sub-compartment shell shall be maintained by one of the following means:
(a) If a valve-actuating device passes through the shell, a gastight seal shall be provided.
(b) If the actuating handle is wholly within the shell, access shall be by a gastight captive hatch which can be opened without tools.