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13.
INSTALLATION INSTRUCTIONS
13.1. Assembling the actuator on the valve
The actuator can be assembled onto the valve flange by using the actuator housing flange with threaded holes.
The actuator drive sleeve is connected to the valve stem by an insert bush.
The assembly position of the actuator, with reference to the valve, must comply with the plant requirements
(cylinder axis parallel or perpendicular to the pipeline axis).
1) Check that the coupling dimensions of the valve flange and stem, or of the relevant extension, meet the
actuator coupling dimensions.
2) Bring the valve to the position related to the actuator spring operation.
3) Lubricate the valve stem with oil or grease in order to make the assembly easier. Be careful not to pour any
of it onto the flange.
4) Clean the valve flange and remove anything that might prevent a perfect adherence to the actuator flange and
especially all traces of grease, since the torque is transmitted by friction.
5) If an insert bush or stem extension for the connection to the valve is supplied separately, assemble it onto the
valve stem and fasten it by tightening the proper stop dowels.
6) Bring the actuator to the position caused by the spring operation.
7) Connect a sling to the support points of the actuator and lift it: make sure the sling is suitable for the actuator
weight. When possible, it is easier to assemble the actuator to the valve if the valve stem is in the vertical
position. In this case the actuator must be lifted while keeping the flange in the horizontal position.
8) Clean the actuator flange and remove anything that might prevent a perfect adherence to the valve flange
and especially all traces of grease
9) Keep the valve in open position
.
q
remove the control system fastening M20 bolts;
q
install suitable steel support fixed to the floor and fasten it to the actuator control frame
MDE142E0
10) Lower the actuator onto the valve
11) Tighten the nuts of the connecting
IMPORTANT NOTE FOR
FIELD ACTUATOR/VALVE
If the vibration level of the pipe where
the actuator/valve is installed is high,
the
components(MCU/HPU)
segregated from the OLGAS actuator
in the following way:
42/60
in such a way that the insert bush,
assembled on the valve stem, enters
the actuator drive sleeve. This
coupling must take place without
forcing and only with the weight of
the actuator
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
Recommended tightening torque is
1100 Nm
.
INSTALLATION
actuator
2
steel.
main
shall
be
06/04/04
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