Europa-List: Re: Europa-List Digest: 28 Msgs - 08/27/04

[Graham Singleton <graham@gflight.f9.co.uk>]

>expansion tank
>
>
>Graham,
>Are you sure the water gets sucked back in when it cools? I can see how 
>the water
>gets pushed up into the expansion tank when it expands but the pressure cap
>will be closed when the water cools thus stopping the water from returning 
>from
>the expansion tank.
>Patrick Griffin

Patrick
yes I am. The pressure cap is a two way valve. Not obvious at first but 
that's the way it's designed. There's a small inlet non return as well as 
the pressure sensitive Relief valve.
Graham