Festo VTSA Series Description page 190

B. Supplementary overview of components
2/2−way valve
4
14
12/14 1
(14)
4
114
112/114 11
(5)
(14)
1) Note: The 2/2−way valves with ID code VV are to be operated in a separate pressure zone with
separate exhaust ducts (3) and (5) if the VTSA/VTSA−F valve terminal is equipped with additional
valve functions.
Tab. B/5: 2x2/2−way valve
B−8
2
12
2
112
1 11
(3)
Identifier T22C−A; ID code: CV
Function:
Two monostable 2/2−way valves, normally
closed
Pneumatic spring return
Identifier T22CV−A; ID code: VV,
1)
Function:
Two monostable reversible 2/2−way valves,
both valves normally closed
Return via pneumatic spring, pneumatic spring
supplied with pressure via port (1).
Connection instructions:
With dual−pressure operation:
Supply different operating pressures to
port (3) or (5).
With vacuum operation:
Either supply vacuum via port (5) and
operating pressure via port (3) or vice versa.
The suction line (line supplied with vacuum)
is to be equipped with a filter to prevent any
contamination from entering the valve.
Ejector pulse with vacuum operation:
The suction line and the pressure line shall
be connected via a T−piece for the ejector
pulse.
Festo P.BE−VTSA−44−EN en 0905e