Re: [AMMRL] He Transfer Line pumpdown tool - Which one does this use?!

From: Kenneth Sharp-Knott via groups.io <kknott=vt.edu_at_groups.io>
Date: Wed, 22 Oct 2025 13:42:20 +0000

As a follow-up, what is the recommended time to pump on the transfer line
with a turbo? What vacuum level are you shooting for?

Thanks!

Ken Sharp-Knott
Manager of Analytical Services and the NMR Facility
Department of Chemistry
Virginia Tech

(540)267-6502 (Cell)
(540)231-0885 (Office)
________________________________

> From: main_at_ammrl.groups.io on behalf of falcocobra via groups.io
> Sent: Monday, August 18, 2025 11:53 AM
> To: main_at_ammrl.groups.io <main_at_ammrl.groups.io>
> Subject: Re: [AMMRL] He Transfer Line pumpdown tool - Which one does this use?!

Hi Ken,

This looks like a cryofab line. I can't really tell if the inside nut is
threaded, but if it matches the thread from my second picture, you can get an
adapter from cryofab.

Best,
Paulo

--

Paulo Falco Cobra | Scientist II - Facility Manager
NMRFAM<https://nmrfam.wisc.edu/> - University of Wisconsin Madison

E paulo_at_nmrfam.wisc.edu<mailto:paulo_at_nmrfam.wisc.edu>
P (608) 265-3303
A 433 Babcock Drive, Madison, WI. 53706



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Received on Wed Oct 22 2025 - 06:43:05 MST

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