VR1 Volume Flow
Rate Controllers
Mechanical controller for constant volume flow
rates over the entire differential pressure range.
Excellent performance. Easily, scaled set point adjustment on
site, also available with actuator.
VK2 Volume Flow Rate
Controllers Maintenance-free in mechanical, rectangular design for constant
volume flow rates over the entire differential pressure range. For vertical
and horizontal installation in ventilation ducts. High control accuracy over the
entire volume flow rate range. Easily, scaled set point adjustment on site, also available
with actuator.
VRE1 Volume Flow Rate Controllers
Electronic design for constant and variable volume flow rates over the entire
range of volume flow rates. An innovative measuring method makes use of the
differential pressure and the position of the damper blade for volume flow
measurement and for regulation. Download Catalogue 3.3
VR1 Volume Flow
Rate Controllers 
VK2 Volume Flow Rate
Controllers 
VRE1 Volume Flow Rate Controllers
Electronic design for constant and variable volume flow rates over the entire
range of volume flow rates. An innovative measuring method makes use of the
differential pressure and the position of the damper blade for volume flow
measurement and for regulation. Download Catalogue 3.3 
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