Re: Liquid nitrogen transfer lines

Vahur Maemets (vahur@tera.chem.ut.ee)
Fri, 26 Jan 1996 09:51:39 +0200 (EET)

We use soft, (kautchuk rich) laboratory, rubber tubes 8 years for the
transfer of liquid N2 into the magnet. One tube (depending goodnes of the rubber) works
1-3 years. We never not measured the pressure in the transfer line, simple
keeping it so low as possible (transfer of 20 liters N2 demands 30-50 min.).
The breakage of the rubber tube is wery rare situation and as the pressure is
low we not keeped it as dangerous occurence. May be it is?

Vahur Maemets

University of Tartu, E-mail: vahur@chem.ut.ee
Tartu, Estonia