11
80-1403-01, Rev. 3
5. Place the jam nuts
and travel index
over the
valve stem
before mounting the actuator on the
valve.
6. Remove the boss nut
from the valve and place
the actuator and yoke over the stem and onto
the boss
. Secure the yoke with the boss nut,
hand-tight.
7. Using the actuator Handwheel, lower the
actuator output shaft to contact the valve stem.
Thread the valve stem into the end of the
actuator output shaft. HINT: Rotate the whole
yoke/actuator assembly to get the valve stem
started into the actuator output shaft. Continue
lowering the actuator output shaft and threading
the valve stem until the actuator output shaft is
fully down on the mechanical stop.
8. Tighten the boss nut to secure the yoke and
tighten the yoke set screw
.
9. Follow the valve seating adjustment procedure
on page 16 to complete the mounting.
Removing the Actuator from a
Valve
1. Move the Group 14 output shaft up into the
actuator body until the mechanical stop
is
tight against the lower bearing plate
.
2. Turn off all electrical power and disconnect all
electrical wiring from the actuator.
3. Loosen the valve stem jam nuts
. Loosen the
boss nut
on the yoke and leave it finger tight.
Loosen the yoke set screw
.
4. Unthread the valve stem from the actuator
output shaft by turning the whole yoke/ actuator
assembly.
Valve Installation
The Beck actuator can be mounted in any
convenient orientation. There is no preferred
operating position.
Inspect the valve body to be sure that it is clean.
Be certain that other pipelines in the area are free
from pipe scale or welding slag that could damage
the gasket surfaces.
Tighten the flange bolts and ensure that all
bolts are evenly torqued. Refer to the gasket
manufacturer’s instructions for specific information
on tightening flange bolts.
NOTE: The valve may have undergone
temperature variations in shipment. This
could result in seepage past the stem seals.
Refer to the valve manufacturer’s maintenance
instructions for packing adjustments, if
required.
