ACTUATORS - RP SERIES
Australian Pipeline Valve - Installation, Operation and Maintenance Manual
22
Three Position Torqturn Actuator
Three position Torqturn actuator provides an
operation of 0°, 45°, 90° or 0°, 90°, 120° and
180°. The midway position is achieved by a
mechanical stop of movement of the 2 auxiliary
pistons. The midway stop positions are
adjustable. Example: 90° actuator can provide
20°, 30°, 50°, 70° etc. The following is the
principle of valve operation:
1. Fully Closed Position
From Figure 11 we can see that this position is
obtained when air is supplied to port 4 and
port 2 is in the state of exhaust air.
Figure 11
2. Fully Open Position
From Figure 12 we can see that this position is
obtained when air is supplied to port 2 and
port A, meantime, port 4 and port B are in the
state of exhaust air.
Figure 12
3. Midway Position
From Figure 13 we can see that this position is
obtained when air is supplied to port 2 and
port B, meantime, port 4 and port A are in the
state of exhaust air. In fact the midway position
is achieved by a mechanical stop of movement
on the two auxiliary pistons.
Figure 13
ACESSORIES AVAILABLE
1. Connecting Brackets
2. Couplings
3. Solenoid Valves
4. Switchboxes
5. Proximity Sensors
6. Gear Boxes
7. Positioners
