13 | Baker Hughes
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(46) and clevis (35).
K.
Proceed to one of the following sections for final adjustment.
Air-to-Open, Section (K-1), Air-to-Close Section (K-2).
K-1. Air-to-Open
After completing step A through J of Section 11, proceed as
follows:
A.
Scribe a line on the clevis (35) in line with the inside of
the yoke.
B.
Connect a regulated air supply directly to the actuator
and gradually apply 8 psig (.55 barg) for size 9 actuators
and 7 psig (.48 barg) for the others.
C.
The clevis should move approximately 1/4".
D.
With the lever and valve plug in the fully CLOSED
position, the holes in the clevis (35) and lever (34)
should be in line.
Note: If holes are in line proceed to Step J. If not in
line, continue to next step.
E.
Move lever (34) to full open position.
F.
Gradually apply sufficient air pressure to extend clevis
locknut (46) to an accessible position.
Do not exceed pressure listed in Figure 14 for the
actuator used.
G.
Loosen clevis locknut (46).
H.
Reduce air pressure to actuator to 7 psig.
I.
Screw clevis (35) in or out on actuator stem so that the
holes in the clevis (35) and lever (34) are aligned with
the lever and plug in the fully closed position.
J.
Insert clevis pin (7) so indicator dot is visible through
front cover (32) and secure with clevis pin clips (5).
Note: On the size 6 and 7 actuators, without the
adjustable indicator (88), the clevis pin (7) must
be installed so it protrudes toward the front cover
(32). If the indicator dot is damaged, paint may be
applied to the end facing the front cover (32) to
make it more visible.
K.
Gradually apply sufficient air pressure to extend clevis
locknut (46) to an accessible position and tighten firmly.
Do not exceed pressure listed in Figure 14 for the
actuator used.
L.
Relieve air pressure.
M.
If used, replace adjustable indicator (88) to lever (34)
with screws (89).
Note: If required, adjust indicator to front cover
indicator marks.
N.
Replace front cover (32) and rear cover (29) and secure
in place with cover screws (30).
O.
Replace spring barrel boss cover (58) and bottom cover
(11) (Snap fit).
Note: Prior to placing the valve in service, operate
the valve actuator through one complete cycle to
ensure proper functioning.
P.
If desired, set handwheel (53) or optional limit stop (77)
to desired position.
K-1. Air-to-Close
After completing step A through J of Section 11, proceed as
follows:
A.
Manually push lever (34) to the full CLOSED position.
B.
Connect a regulated air supply to the actuator.
C.
Gradually apply the final air pressure corresponding to
the closed position. See value on the serial plate.
D.
With the lever (34) and valve plug in the CLOSED
position, the holes in the clevis (35) and lever (34)
should be in line.
Note: If holes are in line proceed to Step H, if not in
line, continue to the next step.
E.
Release air pressure so clevis (35) will separate from
lever (34).
F.
Loosen clevis locknut (46).
G.
Screw clevis (35) in or out so that when the air pressure
corresponding to the closed position mentioned in C
above is applied, clevis holes and lever will be in line.
H.
Insert clevis pin (7) so indicator dot is visible through
front cover (32) and secure with clevis pin clips (5).
Note: On the size 6 and 7 actuators, without the
adjustable indicator (88), the clevis pin (7) must
be installed so it protrudes toward the front cover
(32). If the indicator dot is damaged, paint may be
applied to the end of the clevis pin (7) facing the
front cover (32) to make it more visible.
I.
Tighten clevis locknut (46).
J.
Relieve air pressure to actuator.
K.
If used, replace adjustable indicator (88) to lever (34)
with screws (89).
Note: If required, adjust indicator (88) to front cover
(32) indicator marks with the valve in the closed
position.
L.
Replace front cover (32) and rear cover (29) and secure
in place with cover screws (30).
M.
Replace spring barrel boss cover (58) and bottom cover
(11) (Snap fit).
Note: Prior to placing the valve in service, operate
the valve actuator through one complete cycle to
ensure proper functioning.
N.
If desired, set handwheel (53) or optional limit stop (77)
to desired position.
