April 2022
Installation, Operation and Maintenance Manual
E-90090007 Rev. 0
14
Section 6: Installation
Installation
6.3
Installation
6.3.1
Operator Installation
1.
For closed pedestal operators, removal of the window(s) from the operator
pedestal is required to provide access to the connector.
2.
Complete the measurements in Section 5.2 to aid in the assembly of operator to
valve and to ensure that the end stop is set properly.
3.
If intent is to position operator manually, leave tubing in place. If intent is to
use temporary hydraulic power supply, mark locations then disconnect the
appropriate tubing and connect the power supply (a block valve can be used to
maintain pressure in the cylinder locking the drive rod in position). Do not exceed
the operator MAWP.
4.
While extending the drive rod (1), a controlled stroking speed can be used to travel
the operator while screwing/rotating the stem nut section of the connector onto
the valve stem.
6.3.1.1
Operator Installation Conditions
1.
Condition A.
Valve Stem Extended/Operator Drive Rod Retracted
(typically FS style operator with drive rod retracted)
2.
Condition B.
Valve Stem Retracted/Operator Drive Rod Extended
(typically SR style operator with drive rod fully extended)
!
CAUTION
Jamming the stem nut into the top of the valve stem may damage the threads; if damage
occurs repair is required before attempting to screw the stem nut onto the valve stem.
Side loading of the valve stem while lowering the operator onto the valve can cause
damage to the valve or operator. Ensure rigging will allow sufficient control of the position
and speed at which the operator is lowered onto the valve.
NOTE:
Left Hand Rotation of the stem nut is most common. Determine thread rotation before
attempting to screw the stem nut sections onto the valve stem.
