Mechanical Installation - Festo DRD Série Notice D'utilisation

DRE/DRD
When high−temperature media are used in the tubing and process valve:
Use a mounting bridge and a heat−insulated coupling.
S

Mechanical installation

In order to fit the DRD/DRE quarter turn actuator, set the control shaft of the
S
process valve so that the desired working method for opening and closing the
process valve is implemented.
Note that a process valve with butterfly valve can only be opened in one
S
direction and closed in the opposite direction.
Fitting the DRD/DRE without a mounting bridge
1. Place the DRD/DRE on the control shaft of the
process valve. Make sure here that the square
of the process valve sits in the tetrahedral
coupling of the DRD/DRE without being tilted.
2. Fasten the DRD/DRE to the connecting flange
of the process valve with 4 corrosion−resistant
screws and circlips.
3. Tighten all the screws in diagonally opposite
sequence. Tightening torque è Technical spec
ifications.
4. Check that the DRD/DRE turns in the required
direction of rotation and whether the process
valve assumes the required position.
If the DRD/DRE does not turn in the required
direction of rotation, please consult the Festo
service department.
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Fig. 6
Festo DRD/DRE 0703a English