SCHUNK ROTA EP 380-127, Assembly And Operating Manual, Page: 46 / 73

Function
46 02.00|0889073_ROTA TB-TBS-EP |en
Pilot controlled check valve
The pilot controlled check valve is a self-contained structural unit
consisting of a valve body and two blocking pistons. It can easily be
serviced from the face side of the chuck by means of a locking
screw. The valve unit controls the flow of two air channels from
and to the profile seals through the two blocking pistons. The
change of the air flow at the profile seals causes the air channel to
one cylinder chamber (release chamber) to be ventilated. The
reversal of compressed air from one cylinder chamber to another
is caused by the axial movement of the valve body, while the two
single blocking or non-return pistons execute only one stroke
during blocking of their corresponding cylinder chambers. Both
O.D. and I.D. clamping are therefore possible through the entire
valve system.
Pilot-controlled check valve
8.3