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

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.
Potawatomie Bingo Casino - Milwaukee, WI
Two custom fabricated 20" high velocity air eliminators.
Boehringer Ingelheim - St. Joseph, MO
Custom 20" high velocity dirt and sediment separator with removable top head for access to Spirotube® element bundle.
Penn State University - State College, PA
Penn State is one of our largest university customers with more than 90 units installed across campus.