Variable Air Volume (VAV) for pressure, flow, temperature control

Variable air volume or air flow regulator box with BacNet / LON compatible controller, modulating actuator with pressure, air flow, temperature signal input. Also available for hazardous area ATEX certified.


Variable air volume (VAV) / Air Flow Regulator / Controller Box

for pressure, air flow, temperature control, BacNet communication, pressure independent, optional with heater, Explosion proof ATEX

VAV box for air flow, temperature, pressure control in HVAC
Variable Air Volume box for air flow, temperature, pressure control in HVAC

We offer high quality variable air volume, constant air volume regulator terminal box with controller, actuator, for non hazardous area and hazardous area Zone 1, 2 installation.

Variable air volume or VAV regular modulates volume of the air to the zone by opening or closing the damper, thus controlling the amount of conditioned air directed to the zone. Each zone in a building has a thermostat which controls the VAV, telling it when to open or shut the damper based upon the needs of the zone.

VAV systems vary the airflow at a constant temperature. The advantages of VAV systems over constant-volume systems include more precise temperature control, reduced compressor wear, lower energy consumption by system fans, less fan noise, and additional passive de-humidification.

Simple VAV systems: It incorporates one supply duct that, when in cooling mode, distributes supply air at a constant temperature. As the supply air temperature is constant, the air flow rate must vary to meet the rising and falling heat gains or losses within the thermal zone served.
Multiple-zone VAV systems: The air blower’s flow rate is variable. For a single VAV air handler which serves multiple thermal zones, the flow rate to each zone must be varied as well. A VAV terminal unit, often called a VAV box, is the zone-level flow control device. It is basically a calibrated air damper with an automatic actuator. Control of the system’s fan capacity is critical in VAV systems.


  • Regulates air flow volume depending upon pressure, temperature or flow requirement
  • Pressure independing
  • Controller with BacNet / LON compatible
  • Modulating actuator for temperature, pressure sensor signal inputs
  • Also available in ATEX version for VAV terminal box, controller and actuators
  • Optional: with pre-heater element


  • Office, cabins
  • Conference halls, auditorium
  • Malls, theatre
  • Commercial places, banquet hall
  • Manufacturing plants
  • Restaurant, Food Cafes
  • Hotels, resorts

Additional information


Variable air volume
Constant air volume


BMS compatible with BacNet Controller


Also available in explosion proof with ATEX


Pressure, Air Flow, Temperature


with heater, controller