Two custom fabricated 20" high velocity air eliminators.  One for hot water and one for chilled water.

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North Mississippi Medical Center - Tupelo, MS
High velocity 18" combination air eliminator and dirt separator.
International ALERT Academy, Big Sandy, TX

“I have not had to vent a coil in the three months since

Industrial Gallery
Spirovents have been installed in many new and existing industrial HVAC systems.
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.