ah.........say what ?
spring type hose clamps are not used anywhere in the fuel system.
it's either crimp style from the factory........or , they're usually
replaced with screw type hose clamps.

the common screw type clamp  is the # 4 size from a FLAPS.  Those are 'ok'
but not the best I've found at all.

I get these extra nice german made ones..........their edges are rounded
slightly so they don't cut into the hose.
they come in pretty small sizes too.
scott
----- Original Message -----
From: "Evan Mac Donald" <vanagon_dad@SBCGLOBAL.NET>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Thursday, July 24, 2008 8:37 PM
Subject: Re: fuel tank update

> Spring clamp type! just like anywhere else in the fuel ring!
>
> Allan Streib <streib@CS.INDIANA.EDU> wrote:  Tonight, I removed the fuel
> tank from my van. There is a fair amount
> of bubbly and flaking paint on the exterior, but I think the tank is
> sound and that with some wire brushing, sanding, rust converter and
> paint it will be fine.
>
> The interior of the tank looks pristine. No visible rust, dirt, gunk,
> or other unpleasant surprises. Since it looks good I don't think I'm
> going to use any cleaner or other treatment, might do more harm than
> good.
>
> To replace all the little vent tube lines, that is 5mm line correct?
>
> Coupling the return line to the tank looks like a section of 7mm line.
>
> Does anyone know of a source for the crimp-type hose clamps that are
> the original style? Are they worth using or should I just use the
> screw/clamp type?
>
> Allan
> --
> 1991 Vanagon GL