Rectangular VAV terminals| NK type Pressure independent | Single wall construction

Rectangular VAV terminals| NK type

Type NK are rectangular pressure-independent VAV air volume control terminals. The terminals are designed particularly for systems with larger air volumes and duct sizes and for the accurate measurement and control of air volumes courtesy of the patented air flow sensor type Flo-Cross®.

<p>NKOAOOB type</p>
<p>NKOFORB type</p>
<p>NKOROOB type</p>
<p>NKOFOOB type</p>
<p>NKONOOB type</p>


  • Pressure independent control functions.
  • For large air volumes.
  • Low leakage damper (optional).
  • High accurate air flow sensor (Flo-Cross type).
  • Quiet in operation. 
  • Optional: sound attenuator and/or reheat coil (hot water or electric).


In CAV application, the NK terminals maintain the required constant airfl ow independent to the inlet static pressure. Furthermore the VAV terminals can be used for room pressure control.

In VAV application, the terminals control the air volume to the room, depending on the cooling load required thus saving energy consumption in both cooling and heating applications. Alternatively VAV terminals are ideal to be used for CO2 control. Dependent of the indoor air quality, always the
correct amount of fresh air will be supplied to the room. Off course the primary air handling system need to be suitable for this.

The VAV or CAV terminals can be used either for supply or return air applications in new or refurbishment projects. The terminals have a single wall construction and can optionally be supplied with an additional splitter sound attenuator and a plenum with built-in electric reheat coil.

New VAV or CAV project? Use the Barcol-Air selection tool AIRSELECT for easy selection! 

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Rectangular VAV & CAV pressure independent Air Volume Control Terminals NK type

Air Metering VAV | our green comfort solution

AIR TIGHTNESS certificate NEN-EN-1751

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