Bill,
   I'd try going directly through Alcon Valves.  We order our interior coil
fittings (with slightly different specs) from them.  I haven't had to
purchase any since 1994, but they should still be in business and probably
have the type you need.

Alcon Valves Inc.
800 Hollywood
Itasca, IL 60143-1353

(708) 773-1388


At 12:59 PM 7/3/99 -0400, you wrote:
>Isotope Geochemists,
>
>I am looking for a US distributor for the cryogenic valves that control the
>flow of LN from the LN reservoir to the LN dewars under the cold traps and
>cold fingers on F MAT mass specs.
>
>I have two types of LN valves on my mass specs, alcon and ASCA.  They are
>evidently 240 V, 50 Hz, 4.0 bar Liq/Nitrogen valves.  Anyone know of a US
>distributor for these valves?
>
>Cheers,
>
>Bill
>----------------------------------------------------------
>William J. Showers
>Dept. of Marine, Earth, & Atm Sciences
>North Carolina State University
>
>(919) 515-7143 - voice
>(919) 515-7802 - fax
>[log in to unmask] - email
>
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Lora Wingate
University of Michigan
Department of Geological Sciences
Stable Isotope Laboratory
425 East University
1013 C.C. Little Building
Ann Arbor, Michigan 48109-1063

(734) 763-4690  fax
(734) 763-0561  phone