I'm wondering if there's junk in your valve causing it to not shut off
properly.

I believe that is a separate replaceable part.

and sure you could put a gate valve or ball valve inline with the rear
heater if you wanted.

and  mostly they 'shut off well' I'd say.

----- Original Message -----
From: "Edward Maglott" <emaglott3@GMAIL.COM>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Friday, July 30, 2010 3:53 PM
Subject: Re: Turning off rear heater

> Mine is the same way, it doesn't turn off all that well.  On a recent
> hot trip I found when I got into camp and went under the back seat to
> get something, everything under there was hot hot hot.  I checked the
> valve and it was in the off position, but apparently enough hot water
> was still going through there to heat that core up plenty hot.  Maybe
> an alternative valve could be put into the system instead of the
> stock one?  Enlarge the hole in the heater cover enough to be able to
> operate it?  Anybody done this?
> Edward