I would like to construct a small cooling circuit (appr. 50 x 50 cm) pumping liquid at a temperature down to -120°C from a cold reservoir to the specimen to be cooled. The tubes and connections are not a problem, but does somebody know a pump (suction/compression for circulation) suitable for managing such cold liquids? Pumping performance: a (few) litre(s) per min, little pressure difference. It should be as cheap as possible
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CSA
August 22, 2012One of our members suggests you try Cryogenic Industries for pumps that are good at LNG, LN temperatures. He said: “They are relatively cheap, but they may be too large. That would push you into the ranges covered by Barber Nichols – have him give Jim Dillard a call. Not cheap, but not as expensive as a Linde or Air Liquide cold pump.”
You can look up pumps in the Buyer’s Guide at http://www.cryogenicsociety.org.
All these companies are Corporate Sustaining Members of CSA.