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Installation, Operation and Maintenance Manual
VCIOM-15792-EN Rev. 0
1.
2.
NOTICE
The eyebolt is sized for the lifting of the only actuator (NOT ACTUATOR+VALVE).
Proper lifting points have to be foreseen for the valve.
3.
4.
Installation
Check that the coupling dimensions of the valve flange and stem, or of the
relevant extension, meet the actuator coupling dimensions (valve stem and flange).
Lubricate the valve stem with grease in order to make the assembly easier.
Connect a sling to the support point of the actuator and lift it. To make easier the
assembly, the valve stem has to be in perfect vertical position.
Screw the actuator coupling joint onto the valve by rotating the actuator, or screw
down the valve stem stroke-ring with Red Loctite 542 and fix the half bearings.
When the threaded holes of the actuator flange are in correspondence with the
holes on the valve flange screw the proper stud bolts. Screw the nuts on the stud
bolts and tighten up the valve flange is in contact with the actuator flange.
Tighten the nuts of the connecting stud bolts evenly with the torque prescribed in
the table. The stud bolts must be made of ASTM A320 L7 steel, the nuts must be
made of ASTM A194 grade 2 steel as minimum.
Section 2: Installation
October 2020
9
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