I have the "83.5 to 91Acccessory Front Heater Shut Off Valve"
installed in my van:

http://community-2.webtv.net/VanStuff/VanagonWestfalia/

On Fri, Jun 24, 2011 at 4:46 AM, John Rodgers <inua@charter.net> wrote:
> �I need to install a summer shutoff valve on the hose to the front
> heater core. I just cannot get the heat valve to close tight enough, and
> in this summer heat hot air blowing is a bit much. Is this procedure
> posted on a website anywhere? Got a link?
>
> Thanks,
>
> John
>
> --
> John Rodgers
> Clayartist and Moldmaker
> 88'GL VW Bus Driver
> Chelsea, AL
> Http://www.moldhaus.com
>