Butterfly Valve DKZ 103 APS

With this model the sleeve is pressed on to the valve disk by means of compressed air after the valve has closed (static seal). So, a single or double-acting pneumatic drive is ideal as an actuator for an APS valve.

This method is very good for very abrasive bulk goods. In the relaxed state there is hardly any contact between the sleeve and the valve disk - therefore there is less wear and tear and less actuating power is needed.

Another advantage is that when adjusting the sealing sleeve in the case of wear and tear, the valve is normally still tight, even if the surface which comes into contact with the medium has been worn away by a few millimetres.