Valve Flow Direction - Emerson Fisher 1051 Instruction Manual

1051 & 1052 F & G Actuators
1-1/2 inch shafts is 136 NSm (100 lbfSft); for 1-3/4 to
2-inch shafts is 183 NSm (135 lbfSft).
CAUTION
Exceeding any torque requirement
may impair the safe operation of this
actuator by causing broken or
damaged parts. Refer to table 3 for the
bolting torque requirements.
5. Screw the left-hand threaded locknut (key 58)
onto the diaphragm rod (key 10) as far as possible.
6. Screw the turnbuckle (key 57) as far as it will go
onto the actuator rod.
7. Screw the locknut (key 16) as far as it will go onto
the rod end bearing (key 17). Thread this assembly
completely into the turnbuckle (key 57).
8. If the lever (key 27) is attached to the rod end
bearing, remove the cap screw and hex nut (keys 18
and 19).
9. If the Type 1052 spring adjustment has been
changed, complete the Initial Setting portion of the
Type 1052 Spring Adjustment section before
proceeding.
10. Consult the appropriate valve instruction
manual's Installation section for lever/valve shaft
orientation marks, and slide the lever into place (see
figure 4). Clamp with the cap screw (key 28).
11. Rotate the lever (key 27) to align with the rod
end bearing (key 17). This connection can be aided
by moving the actuator off its up travel stop with a
regulated air source and adjusting the turnbuckle
(key 57) slightly.
12. Apply sealant (key 77) or equivalent
thread-locking compound to the threads of the cap
screw (key 18).
13. Connect the lever (key 27) and the rod end
bearing (key 17) with the cap screw and hex nut
(keys 18 and 19). Tighten the cap screw to the
recommended bolt torque shown in table 3.
14. Note the valve position and direction of rotation.
Position the travel indicator (key 37) accordingly.
a. If no handwheel actuator is to be used,
position the travel indicator (key 37) according to
6
the valve position just noted. Replace the cover
(key 33), and secure with washers and cap
screws (keys 34 and 63). If holes in the cover and
housing (key 20) do not align, temporarily loosen
the cap screws (key 23), and shift the housing
slightly.
CAUTION
To avoid parts damage, do not stroke
the actuator while the cover (key 33) is
off.
b. If a manual handwheel actuator is to be used,
refer to the separate handwheel actuator
instruction manual for mounting instructions.
15. Replace the cover (key 33), and secure with cap
screws and washers (keys 34 and 63). If the holes in
the cover and housing (key 20) do not align, use a
regulated air source to move the actuator slightly off
the up travel stop. If the hole alignment cannot be
obtained in this manner, temporarily loosen the cap
screws (key 23), and shift the housing slightly.
CAUTION
To avoid parts damage, do not stroke
the actuator while the cover (key 33) is
off.
16. Follow the instructions given in the Turnbuckle
Adjustment section before proceeding to the Loading
Connection section.

Valve Flow Direction

Valve construction can change the flow direction for
a control valve assembly. It is important to observe
the flow direction in all valve applications before
installing the valve in the pipeline (see figure 3).
Refer to the appropriate valve bulletin or instruction
manual.
Observe all warnings and cautions
provided in the appropriate valve
instruction manual Installation section.
Instruction Manual
Form 5062
May 2008
Note