Dyna-Flo Control Valve Services Ltd.
Phone: 780 •469 •4000 Toll Free: 1 •866 •396 •2356 Fax: 780 •469 •4035 Website: www.dynaflo.com
Model DFR 070/156/220 Rotary Actuator
P-DFR3M0919A 8
Operation, Parts, and Instruction Manual
ACTUATOR ADJUSTMENT
Before You Begin:
• Read the General and Scope section of this manual (Page 2).
• Read Safety Caution (Page 2).
• Use safe work practices and lock out procedures.
• Disconnect supply lines (air or gas), electric power, or control
signal to the actuator. Sudden movement of actuator can
cause damage or injury, make sure actuator will not operate.
• Vent any pneumatic actuator loading pressure.
• Relieve process pressure and drain the process fluid from up
and down stream of valve.
ACTUATOR MOUNTING (Continued)
15 Check the position of the valve ball or disk and note the
direction of rotation for valve operation.
For actuators without a handwheel:
ARe-install the cover plate assembly (Keys 36, 37,
38, 39, 40, 41, 42, and 43). Position the cover plate
assembly so that the travel indicator (Key 42) will
rotate according to the position of the valve ball/disk
and direction of valve operation as determined
above.
BApply anti-seize compound (Key A) to the threads of
the cap screws (Key 45) and secure the cover plate
(Key 36) in place using the washers (Key 44) and
cap screws. Torque the cap screws to the
recommend torque value listed in Table 4.
Note: If the holes of the actuator housing (Key 6)
and the cover plate (Key 36) are out of alignment, it
may be necessary to loosen the mounting yoke cap
screws (Key 7) and reposition the actuator housing.
DO NOT stroke the actuator while the cover plate is
removed.
For actuators with a manual handwheel:
ARefer to the Top Mounted Handwheel section of this
manual (Page 25).
16 Refer to the Actuator Adjustment section for instructions
on re-adjusting the turnbuckle assembly.
Figure 7 Lever Operating Clearance
• Be aware of potentially hazardous process material that may
be present in-line and in-valve. Isolate the valve from
process pressure. Use a bypass or block valve if necessary,
or completely shut off the process. Relieve internal valve
pressure (refer to the appropriate valve instruction manual).
Special Tools Required:
• Regulated air supply (to stroke the actuator).
• Wrenches (See Table 5 for open-end wrenches required for
turnbuckle adjustment).
Note: When the turnbuckle (Key 29) is properly adjusted,
the valve will be completely closed or open when the actuator
is against its travel stops (Keys 17 & 18). For accurate zero-
degree valve ball or disk position adjustment, the control valve
must be removed from the pipeline and the actuator may also
need to be removed from the valve (Refer to the appropriate
valve instruction manual).
OPERATING CLEARANCE
SIZE 070 TO 220 = 1/16” (1.6 mm)
SIZE 070 TO 220 = 1-3/8” (34.9 mm)
