EN

The EN four-sided automatic CAV controllers are designed to control the inlet or outlet air flow volume in HVAC systems. The EN air flow volume controller is a mechanical automatic unit that operates without external power supply. The damper blade, equipped with low friction bearings, is adjusted by aerodynamic forces so that the set air flow volume is kept constant within the differential pressure range. The EN controllers for the regulation of normal and high CAV are suitable for air flow volume of up to 12 096 m3/h. The EN controllers are suitable for air flow velocity of up to 8 m/s. The CAV controllers are made of galvanized steel, silver-gray RAL 7001 powder enamel coating available on request.

Variants
EN - CAV controller
EN-D - CAV controller with acoustic insulation 
EN/B50 - CAV controller with two-position servo drive to adjust the set air flow volume

Versions with a servo drive can be available on request 
B52 - 24 V AC/DC, 3-point, with auxiliary switch
B70 24 V AC/DC, modular voltage 2-10V DC