10
February 2022
Installation, Operation and Maintenance Manual
MAN 607 Rev. 6
Section 2: Installation
Installation
Table 2.
Nuts tightening torque
The screwing values in Table 2 were calculated considering the materials ASTM A320 L7
for screws or tie rods and ASTM A194 gr.2H for the nuts.
2.4.2
Assembly Procedure
!
WARNING
Failure to comply with the following procedures may impair product warranty.
NOTICE
Installation, commissioning and maintenance and repair works should be carried out by
qualified staff. A non-conforming assembly could be the source of serious accidents.
For actuator assembly on the valve:
NOTICE
Check that the assembly position, as shown on the documentation, complies with system’s
geometry. Check the consistency of the parts of actuator-valve coupling.
•
Operate the actuator so that it reaches the position matching valve
position (Section 3.3).
•
Lubricate valve stem with oil or grease.
•
Properly clean and remove grease from coupling flange surfaces.
•
Connect, if supplied separately, the adjustment insert to valve stem and fasten it
with the special fastening pins.
•
Lift the actuator using the special lifting points (Section 2.2).
•
Install the actuator so that valve stem inserts in the coupling area. This coupling
should be made without forcing.
•
Fasten the two parts with the threaded connections (screws, tie rods, nuts). If
holes of coupling flanges are not aligned, adequately operate the actuator. If
necessary, move the mechanical stops backwards (Section 3.4).
•
Fasten threaded connections. Please refer to Table 2.
Threading
Tightening Torque (Nm)
M8
20
M10
40
M12
70
M14
110
M16
160
M20
320
M22
420
M24
550
M27
800
M30
1100
M33
1400
M36
1700
