ROTADISK Pneumatic Actuator RD & RDF
Operating Manual – BA3002 EN
3 Product Description
Page 32 of 79
3.3.1 Double-action Function (ROTADISK Pneumatic Actuator Type RD)
The following functional description refers to a ROTADISK Pneumatic Actuator in
standard design ( see section 3.1).
The interior of the ROTADISK Pneumatic Actuators is pressurised through connection “P1”
between the two pistons. The pistons move apart. The force of both pistons is transmitted to
by the double swing arm to the drive shaft which rotates anti-clockwise by 90°. This moves
the pneumatic actuator into the “OPEN” position.
If connection “P2” is pressurised and “P1” vented, the two outer chambers are pressurised
and the pistons move together. The drive shaft then rotates clockwise by 90° and the
pneumatic actuator moves into the “CLOSED” position.
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