Install the Spirovent® at the point of lowest solubility, which is the place in the system where the temperature is the highest and pressure the lowest. Note as well to always "pump away" from the expansion tank, never towards it.

Related Work

IM Flash Technologies - Lehi, UT
Custom 14" all stainless steel high velocity air eliminator for process chilled water.
University of Michigan - Ann Arbor, MI
Replacing the old style centrifugal separator after two years of unsatisfactory system performance, the Spirovent solved the problems within two months.
University of Missouri - Columbia, MO
The University of Missouri, Columbia is home to the second of the world's largest Spirovent® combination air eliminator and dirt separator.
Eastern Illinois University - Charleston, IL
After having tried numerous other methods, the first Spirovent was installed in Carman Hall to deal with a long history of no heat calls and clogging valves.