Thank you everyone that replied !
I got some excellent answers!
Cheers! Gunnar :^)
On Tue, Jun 29, 2010 at 3:32 PM, James Holton <jmhol...@lbl.gov> wrote:
>
> The part you are looking for is known as a "valve operator", at least in
> the parlance of our supplier. Here's a cut & paste of the item we
> purchased for pumping out our shipping dewars with a nominal 30mm O.D.:
> ************************************
> V1000 Series Operator for 1" tube.
> Part Number: V1085-3-25 (KF-25 flange) @ $356.00 each
>
> From:
> DLH INDUSTRIES INC.
> P.O. Box 562
> San Luis Obispo, California 93406
> (805) 781-3565 FAX (805) 781-3566
> Email: sa...@cryocomp.com
> Web Site: http://www.cryocomp.com
> ******************************************
>
> So far, we have tried to rescue 3-4 different people's dewars by pumping
> them down with this thing, and only one of them has worked. Most of the
> time the vacuum fails because of a crack or leak on the inside of the dewar
> somewhere, and that cannot easily be fixed. Still, the one success pays for
> the tool.
>
> -James Holton
> MAD Scientist
>
>
>
> On 6/28/2010 9:34 PM, Frank von Delft wrote:
>
> They seem to have a finite life-time: we had two of these, bought at the
> same time, self-immolate the way you describe within months of another,
> after ~5 years of good service.
>
> We asked TW about it and they said it would cost more to get it fixed than
> just get a new one -- then again, they would have said that, wouldn't they.
> If you figure out how to re-suck the vacuum, do tell the list!
>
> Cheers
> phx.
>
> P.S. Sorry, we don't have an adaptor -- you probably figured :)
>
>
>
> On 29/06/2010 00:07, Gunnar Olovsson wrote:
>
> Dear ccp4bb,
>
> We have a *Taylor-Wharton *CX100 Dry shipper Dewar that has lost it's
> vacuum insulation. The vacuum sealing plug "popped out" of the valve
> (standard 30mm diameter).
>
> Has anyone found a vacuum adapter that fits so that one can re-establish
> vacuum insulation at "home"?
>
> I would ideally need to find a vacuum adapter that fits the valve of the
> Dewar and that ends in a KF16 Flange (preferably), so that we can
> re-establish vacuum insulation ourselves.
>
> Thank you very much in advance for your help!
>
> Sincerely - Gunnar
>
>
> Dr. Gunnar Olovsson
> Life Sciences Centre (4th floor)
> University of British Columbia
> 2350 Health Sciences Mall
> Vancouver,BC V6T1Z3 Canada
> gun...@byron.biochem.ubc.ca
>
>
>
