The Greenheck (Venco) VCDR-53-8-KIT is an OEM 8" round control damper designed for precise airflow regulation in low to medium pressure HVAC duct systems.  Built on the VCDR-53 round damper platform with integral blade seals, it provides reliable modulation and shutoff for supply, return, or exhaust air in commercial and light industrial applications.
 
This assembly kit includes a dedicated actuator mounting bracket, simplifying installation of electric or pneumatic actuators and helping ensure stable linkage geometry.  The galvanized steel construction and sealed blade design help minimize leakage and maintain performance at pressures up to 4 in. wg and air velocities up to 3000 fpm when applied per VCDR-53 ratings.
 
The Siemens Building Technology GDE161.1P non-spring return 0–10 VDC, normally open actuator is required for operation and is sold separately.
 
When paired with the Siemens Building Technology GDE161.1P non-spring return 0–10 VDC, normally open actuator, the Greenheck (Venco) VCDR-53-8-KIT serves as a direct replacement for Honeywell D690A1010 round damper kits.