• A Volume Control Damper or VCD is a specific type of damper used to control the flow of air in an HVAC heating or cooling system.
  • A damper may be used to cut off central air conditioning (heating or cooling) to an unused room, or to regulate it for room-by-room temperature and climate control. Its operation can be manual or automatic.
  • Volume Control Dampers are designed with a rigid, robust assembly formed from channel frame.
  • Designed for heating, ventilation, air conditioning systems.
  • Frame is constructed from heavy gauge galvanized steel sheet.
  • Blade linkages are held outside the casing to increase the free area of air flow and eliminate noise and friction against the air flow.
  • Standard opposed blade operation provides minimum turbulence by non-diverted air flow which is a key factor when dampers are used close to the fan.
  • Self-lubricating nylon bush offers smooth blade operation in both static & dynamic conditions.


  • All the dampers are rigidly constructed, well-made and free from any defects in material and workmanship.
  • Damper has to be stored in a clean and dry environment. A visual check is required on the damper to ensure that no damage is occurred during transit.
  • Before installation, ensure that the damper is free from dust & foreign matters.
  • Check the operation of the damper manually before installation .Damper has to be supported with suitable supporting systems.
  • Damper position can be manually locked by using the locking wing nut. Usually, damper position will be locked during the commissioning of the HVAC equipment.
  • Motorized dampers can be controlled by actuators from fully open to fully closed position automatically based on the input signal.