Bernie

We have a used ASCO cryogenic valve but I am not sure what condition its
in. It runs at 230V so may not be the same.
On the advice of the liquid nitrogen vessel manufacturer, we installed a
liquid cryogenic regulator before the valve so the pressure is limited to 1
Bar on the vessel side.. This ensures that when the valve opens liquid
nitrogen doesn't blow out everywhere under the Kiel device and also
protects the valve from abnormal high pressure.

Regards

John

its At 15:53 21/10/2004, you wrote:
>Dear Isogeochemists,
>
>      We recently had a failure in one of our liquid nitrogen valves for
>our Kiel Device. The manufacturer of this valve, Alcon Valves (part #
>68-45-24-220-60) has a 6-8 week backorder on this valve, which essentially
>shuts us down for a while. I'm still talking to Thermo-Finnigan about
>getting a replacement through them, but was wondering if anyone out there
>had a spare valve in their stock that they could send us in order to get up
>and running again. We would, of course send you the brand new valve once it
>comes in.
>
>Thanks in advance,
>
>Bernie Genna

John Hill
Mass Spectrometry Facility
University College London
Chemistry Department
20 Gordon St.
London
WC1H 0AJ

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