Those much newer tanks have a separate pressure relief valve in a bung
welded to the tank while the old tanks have the relief valve as part of
the on/off valve. Look at your old on/off valve and you will see it is
kind of T shaped, with the end of the T opposite the regulator fitting
being the relief.

The old AutoStop fill valve was actually the brand name of the product
used in the tanks made by others such as Manchester. Earliest tanks had
a completely manual valve, then the AutoStop one was used for several
years. At some point the filler valve went manual again and the latest
have a different overfill prevention type filler valve that I believe
uses a float inside the tank to shut off the filling when the liquid
propane level inside rises high enough.

Mark

neil N wrote:
> On Fri, Jun 12, 2009 at 12:07 PM, Old Volks Home<oldvolkshome@gmail.com> wrote:
>> Replacement tanks no longer come with "Auto-Fill" Valves from BD or GW.
>> They come with the Manual type now I believe.
>> --
>> Jim Thompson
>> 84 GL 1.9 "Gloria"
>> 84 Westfalia 2.1 "Ole Putt"
>>
>
> Hi Jim. Thanks.
>
> In reading + phone calls today, I realize I've misunderstood things.
>
> For anyone other confused souls reading GoWestys library article helped:
>
> http://www.gowesty.com/library_article.php?id=312
>
> I had equated the old potentially problematic Auto Stop Fill *valve*
> with the now the more modern "auto-stop" filling port design.
>
> But... In looking at pic here:
>
> http://www.gowesty.com/ec_view_details.php?id=2447
>
> I see the main valve, bleeder, fill valve, but what is the blue thing?
>
>
>
> Neil.
>
>