I don't get it.  Go Westy lists a tank fill and a city water hookup.  I don't have these outlets but it sounds like the Tank Filler is what you want.  Isn't it?
Jeff85 Westfalia with original broken outlets

> Date: Fri, 16 Aug 2013 14:37:38 -0400
> From: mkriley@FUSE.NET
> Subject: Re: Filling water tank when no hose is available (GoWesty              connector)
> To: vanagon@GERRY.VANAGON.COM
> 
> kind of defeating the purpose of having a outside fill, eh?
>  lets see
> 1 remove table
> 2 remove crap from cuboard
> 3 find scewdriver
> 4 unscrew panel
> 5 unscrew lid
> 6 slop water everywhere tring to pour it in
> 7 do 1 to 5 in reverse order
> 
> much better 
> thanks
> 
> 
> mike
> 
> 
> ----- Original Message -----
> From: Stuart MacMillan <stuartmacm@gmail.com>
> To: mkriley@FUSE.NET, vanagon@gerry.vanagon.com
> Sent: Fri, 16 Aug 2013 11:56:26 -0400 (EDT)
> Subject: Filling water tank when no hose is available (GoWesty connector)
> 
> Fill it from the inside. Just remove the cover over the tank and unscrew the
> 6� lid.  I use a my 2 � gallon folding water jug.  Much easier than using
> the funnel I used to carry with the stock hook up.  Use a little silicone
> sealer on the gaskets.
> 
>  
> 
> On Fri, Aug 16, 2013 at 7:56 AM, Mike Riley <mkriley@fuse.net> wrote:
> 
> > Speaking of the GoWesty utility inlets they had some good ideas but missed
> the boat!
> 
> > How are you supposed to fill the tank when there is no pressure water
> available?
> 
> > More seriously they are using the same 2 cent foam gaskets that do all the
> driver�s side seam damage! I was thinking of gearing up to make these in
> silicon rubber of there is any interest.
> 
> > mike
> 
>  
> 
> Stuart
> 
> �85 Westy with the Go Westy hook ups.
> 
> 
> -- 
> He that would make his own liberty secure, must guard even his enemy 
> from oppression; for if he violates this duty, he establishes a 
> precedent that will reach to himself.
> Thomas Paine