Date: Fri, 12 May 2023 10:02:00 -0400
We had this exact issue on our Bruker 800. We removed and replaced the
o-ring and I put a light coating of vacuum grease on the new one. Works
great and I haven’t found any downsides.
On Fri, May 12, 2023 at 07:45 Sebastian Kemper <sebastian.kemper_at_tu-berlin.de> wrote:
> Dear colleagues,
>
>
>
> I am currently checking my helium recapture system and found out, that a
> very old Oxford magnet in our system is not contributing at all to our
> helium recovery. With a helium sniffer we could narrow it down to the
> quench ball valve (see picture). This valve can be triggered very easily
> and I am wondering, if it can be sealed at all with some grease and a new
> O-ring. Therefore, it would be great to hear your expertise to this ball
> valve:
>
> Did you have such a ball valve (exactly the same) and running a helium
> recapture/recovery system?
>
> If yes, how did you manage to get it not leaking?
>
> Does anybody know if there are other quench valves on the market which you
> can install at this connection or which can be installed between the
> backpressure valve and the magnet?
>
>
>
> Best regards,
>
> Sebastian
>
> TU Berlin
>
>
> --
*Justin Pontius*
*NMR Facility Engineer*
Magnetic Resonance Research Center
University of Notre Dame
nmr.nd.edu
574-631-7601 (direct line)
145A Nieuwland Science Hall
Notre Dame, IN 46556
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