Mechanical circular air flow controllers are designed to control supply and extract air flow for constant flow systems, ATEX approved and certified for use in potentially explosive areas

ATEX compliant design

Suitable for gases, air with high humidity and vapors in zones 1 and 2, 21 and 22

The required air flow can be set using the scale on the housing; no additional equipment is required

No on-site testing required prior to commissioning

Allowable ​air speed​ up to​ 12 m/s

Can be installed in any position

Housing tightness according to EN 1751 class C

Additional equipment

Soundproofing coating to reduce noise generated by the chassis

Additional silencer CA Series to reduce noise generated by air flow

The air flow regulator is a mechanical device that operates without an external power source. The control valve flap with bearings with a low coefficient of friction, under the influence of aerodynamic force, is installed in such a position that, regardless of pressure differences, a constant specified air flow is maintained.

Under the influence of the aerodynamic force of the air flow, the damper closes. The inflatable compensator transmits and increases the force and at the same time reduces damper vibrations. A leaf spring located behind the cam disc counteracts the closing force of the valve. The cam disk is designed in such a way that when the pressure changes, the valve flaps are adjusted to maintain a constant air flow within small deviations.

Easy commissioning

The required air flow is easily and quickly set using the adjustment knob with a pointer; no additional equipment is required.

The advantage over standard throttle valves is that there is no need for multiple measurements and adjustments of the valve, which are performed by a qualified specialist. If a change in pressure occurs, for example when a duct section opens or closes, the air flow in the entire system with butterfly valves will also change, while this does not happen in a system with mechanical flow regulators. Mechanical flow controllers will immediately change the position of their dampers so that the set air flow remains unchanged.