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.

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High velocity 18" combination air eliminator and dirt separator.
University of Arkansas Medical Sciences - Little Rock, AR
High velocity 18" air eliminator on the hot water system, and custom high velocity 30" air eliminator on chilled water system.
Penn State University - State College, PA
Penn State is one of our largest university customers with more than 90 units installed across campus.
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24" high velocity combination air eliminator / dirt separator.