Festo DNCKE Série Notice D'utilisation page 25

DNCKE-.../KEC-...
Fitting the pneumatic components
Check whether the following accessories are required:
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Title
Non-return valves
Compensation reservoir
Fig. 12
Use a one-way flow control valve type GRLZ-..., type GRLA-... directly in the
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relevant compressed air port.
Actuating the clamping cylinder:
Select the actuation to suit your application.
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Example
Protection against pressure failure
The piston rod is clamped even if there is
a pressure failure
Fig. 13
Festo DNCKE-.../KEC-... 0204NH English
Type Function
HGL-... Slow pressure decrease with loss of
compressed air
VZS-... Reducing pressure fluctuations in the
subsequent compressed air line
Moving to a clamping position
The clamping can be loosened if both
cylinder chambers are pressurized (this
is to avoid a jerky movement when the
piston rod extends).
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