In an earlier contribution to this discussion,
MartinP wrote:

To explain further

Thanks. Yes it does although I'm unfamiliar with pressure vessels so
need to look further.

Thanks anyway I'll post again (probably when I've done more research
:-)


To aid your research, have a look at Ed's Sealed System FAQ at
http://www.makewrite.demon.co.uk/SealedCH.html

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