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: [email protected]
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
[email protected] <mailto:[email protected]>
