14
February 2022
Installation, Operation and Maintenance Manual
MAN 607 Rev. 6
Section 3: Operation and Use
Operation and Use
Section 3: Operation and Use
3.1
Operation Description
In the normal operating situation, the double-acting actuator is fed by pressurized oil which
flows into the relevant cylinder chamber (for example opening). The cylinder piston stroke
causes the actuator operation and the consequent valve movement to the operational
position requested (in this case to the “open” position). Upon a demand, the closing
chamber the cylinder is fed by pressurized oil and at the same time the oil is discharged
from the open chamber into the return line: the actuator performs the closing operation
driven by the piston movement, and the valve moves from the open position to the close
(safety-related) position.
Item
Name
1
Housing
2
Yoke
3
Yoke bushing
4
Cover
5
Guide block pin
6
Sliding block
7
Guide block
8
Guide bar
9
Guide block bushing
10
Travel stop screw
11
Cylinder head flange
12
Piston rod bushing
2
3
24
23
22
21
20
19
18
17
9
8
7
3
10
1
Table 3.
Parts list
Figure 12
Item
Description
13
Piston rod O-ring
14
Piston rod seal ring
15
Piston rod
16
Piston
17
Piston O-ring
18
Piston seal ring
19
Piston guide sliding ring
20
Cylinder tube
21
Cylinder end flange
22
Travel stop screw
23
Plug
24
Tie rod
