Proportional cryogenic valve for liquid nitrogen

[maxim28]

Hi guys,

I am struggling with a problem which I can not figure out...
Having a manual valve for liquid nitrogen in a pipe 3/4" as shown in the red box of the photo:

We would add a cyogenic proportional valve in order to be able to regulate its opening by a computer.
It looks like I am unable to find such a valve on the market at human prices!
Is the only solution to motorize the manual valve???

I am stuck.
Thanks for any idea
M

 

[iainuts]

Valves like that go for ~ $1000 on up. Is that what you're finding? I'm not aware of a less expensive solution.

 

[maxim28]

Yes, I would find something less expensive... 100 $ would be ideal.