Fitting Pneumatic Components - Festo VSVA-B-A Serie Manual De Instrucciones

2.2 Fitting pneumatic components

Valve terminal type VSVA−B−...:
Please note
For valve terminals with S valves (valves which must be
piloted with external auxiliary pilot air), use only con
nection 14 to feed the auxiliary pilot air to an end plate
and to both end plates when using the NZV... adapter
block.
The pilot exhaust is individually vented for these valves in
the standard design. The ISO mark is visible and lies in
viewing window 1 on control side 14 (see fig.). If you
wish to remove the pilot exhaust ducted or with silencer
via connection 12, you must turn the seals between the
valve plates and the connector blocks. The ISO mark will
then lie in viewing window 2 on the control side 12 and is
crossed through.
20 Festo VSVA−B−...−A... 0411b English