Flowserve Valtek Torex TX IOM - Manual (Page 9)

Torex TX VLEEIM4143-02 09.10
9
4. Connect the compressed air supply to the
actuator. (Applies to pneumatic actuators.)
5. Adjust the end position stop until the actuator
has turned the valve disc to the sealing position.
This sealing position varies from valve to valve,
and the dimension is specified on the valve body
adjacent to the arrow showing the direction of
flow. See dimension ”A” in Fig. 4 in section 9.4.
6. General
The actuator may be fitted either in line with the
connected pipes or transversely to them. An
intermediate plate is necessary for mounting the
actuator in line with the pipework.
N.B. The direction of closure must always be clock wise,
as viewed from the actuator.
Before fitting the actuator, it is important to ensure that the
actuator fits the stem. First try without keys, to check that
the drive slips easily onto the stem. Also check that the keys
are easy to fit and match the keyways in the stem. Grease
the actuator stem entry.
Take care to ensure that the end position stops on the
actuator are correctly set and locked. If the end position stop
for the closed position is incorrectly set, the valve disc may
overtravel, which could damage the sealing elements.