Install the Spirotrap® typically ahead of the system component being protected, such as the boiler in this drawing.

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Spirovent® is now the basis of design in many specifications by the top consulting engineering firms for new construction.
Silence is Golden (Yellow) for Berners-Schober
“The pumps are much quieter as is the circulating water
Cottey College - Nevada, MO
From the President's house to the power plant, to almost all buildings on campus, Spirovents have contributed to efficient system performance across the campus.
Mercy Medical Center - Des Moines, IA
High velocity 18" combination air eliminator and dirt separator.