A new range of cryogenic valves
from Stoehr has been introduced by
Boiswood. The Frees valves for
vacuum jacketed pipes can be installed
in any position, making it possible to
reduce the length of pipework needed.

Positioning the valves horizontally,
for example, can allow installation in
height restricted locations.

The company says that the valves’
clearance volume is reduced by up to
80%, making them cleaner to
operate and quick to purge as there
is less dead space to retain media or
contaminants. Dead space is reduced
since the whole spindle chamber,
including evaporation space, is
separated from the media.