The 3000-series was developed after the wish for a bigger air inlet valve with the technical specifications of the 1450-series in mind. The concept therefore remained identical. This air inlet valve is available with the flange on the front or at the back side, with curved or straight inner flap. Next to this one can choose for the control by means of 2 side arms or by means of a central control arm. The longer control length of the central arm makes exact adjustment of the inlet more precise.
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