for extremely high-pressure steam

maintaining the structural integrity of the fan housing

and 9-13 PSI ranges

it is designed to handle momentary shorts

Resideo ARD9TZ Damper Els PW 17895 for extremely high-pressure steamThe Resideo ARD9TZ is a 9 inch automatic round damper engineered specifically for high efficiency forced air zoning systems that require reliable airflow control. Operating on 24Vac, this two position damper uses a power closed spring return open actuator, ensuring a fail safe open position during power loss to maintain system circulation. This model is the professional grade direct replacement for ARD9TZ U, RDS 9, and CRDS09 legacy dampers.