April 2022
Installation, Operation and Maintenance Manual
E-90090007 Rev. 0
15
Section 6: Installation
Installation
Condition A:
Valve Stem Extended/Operator Drive Rod Retracted (typically FS style
operator with drive rod retracted into cylinder)
Method 1:
1.
Apply anti-seize to valve stem thread.
2.
With the operator’s drive rod (1) fully retracted, lower the operator until the stem
nut section contacts the valve stem.
3.
Continue to lower the operator as you spin/rotate the operator about the valve
stem to engage with the stem nut. Measurement “B” taken in Section 5.2
will provide the required engagement of the stem nut onto the valve stem.
NOTE:
The stem nut may have to be held/restrained by a vise grip/pipe wrench inside the pedestal
so it will rotate with the operator.
The valve stem may not remain in fully extended position due to the weight of the
operator. Threading the swivel connector (80) onto the valve stem will bring the valve stem
back to fully extended position.
4.
Once full engagement is achieved, advance the stem nut a half turn to ensure
operator stroke is controlled by internal stop of operator and is not limited by
valve stroke.
5.
At the point when the pedestal plate is in full contact with the valve gear flange,
position the controls and windows to the required location and install the
mounting hardware.
6.
Slowly extend the drive rod. When it is fully extended, verify the connector
can rotate a few degrees. This confirms that the valve travel is controlled by
the internal stop of the operator and operator is not jamming the gate in the
valve body.
7.
If the operator end stop needs adjustment, refer to Section 8.
8.
Once operator travel is confirmed, the set screws (98) in the connector assembly
can be tightened to lock into position.
