Control Damper Act.
Sprin Return, Non Fail-Safe, and Pneumatic Actuators
Siemens GMA 221.1U
GMA Series, Spring Return, 62 lb-in, Rotary, Electronic Damper Actuators
Application
The OpenAir direct-coupled spring return electronic actuator is designed for modulating, two-position, and floating control of building HVAC dampers.
