Description of the operating principle
The air flow controller is a mechanical device that operates without an external power source. The control valve flap with bearings with a low friction coefficient under the influence of aerodynamic force is installed in such a position that, regardless of pressure drops, a constant specified air flow is maintained. Under the influence of the aerodynamic force of the air flow, the damper closes. Under this force, the inflatable expansion joint expands and acts as a vibration damper. A leaf spring located behind the cam disc countersacts the closing force of the valve. The cam disk is designed in such a way that when the pressure changes, the damper is adjusted to maintain a constant air flow within small deviations. As a result, the volume of air flow remains constant, with small permissible deviations.

Efficient commissioning
The required air flow can be easily and quickly set using

using the adjustment knob with pointer, no additional equipment is required. The advantage over flow control dampers is that there is no need for repeated measurements or adjustments during commissioning. If the pressure in the system changes, for example when the control dampers open or close, the air flow throughout the entire system changes. This does not apply to the use of mechanically independent flow regulators. The mechanical regulator reacts immediately and adjusts the valve flap so as to maintain the set constant volume flow.

Distinctive features
The set air flow value can be set externally using the adjustment knob
High accuracy of control of the specified flow rate
Any mounting position
Correct operation even under unfavorable flow conditions upstream of the regulator
Visual display of valve flap position to optimize operating point
Easy retrofitting with a drive for adjusting the air flow setpoint
Materials and surface coating
Made from galvanized sheet steel
Housing and damper made of galvanized sheet steel
Stainless steel leaf spring
Inflatable expansion joint made of polyurethane
Teflon PTFE coated plain bearings
Cam mechanism and adjustment unit made of galvanized sheet steel