15
MAN 604A Rev. 5
Installation
Section 2: Installation
Figure 13
!
WARNING
Any lifting method different from what described above is strictly forbidden. Bif reject any
responsibility for damages to goods or injuries to persons coming from wrong lifting operations.
The actuator can be assembled onto the valve ange either by using the actuator-housing
ange with threaded holes, or by the interposition of an adaptor ange or a spool piece.
The actuator drive sleeve is generally connected to the valve stem by an insert bush or a
stem extension.
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).
To assemble the actuator onto the valve proceed as follows:
1. Check that the coupling dimensions of the valve ange 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 ange.
4. Clean the valve ange and remove anything that might prevent a perfect
adherence to the actuator ange 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.
Installation, Operation and Maintenance Manual
June 2020
BIFFI IS NOT LIABLE FOR ANY
PERSONEL INJURY DUE TO
INCORRECT USE
DO NOT DISASSEMBLE TOP OR
BOTTOM COVER.
SPRING LOADED.
POTENTIAL ELECTROSTATIC CHARGE HAZARD
REFER TO IOM
LIFTING LUGS TO BE USED FOR THE
ACTUATOR ONLY. DO NOT LIFT
VALVE AND ACTUATOR TOGETHER
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