11
Instructions EM36005 – 07/10
36005 Series V-Max
®
Control Ball Valve
tight seal against the gasket. (Recommended
lubricant SAF-T-EZE Anti-Seize or equal.)
E. Replace ring (29), and upper bushing (17)
on the shaft (5). Install shaft in the body and
engage the ball such that when the ball is in the
closed position, the machined slot in the shaft
end is vertical (perpendicular to the body axis).
Coat shaft below ring groove and bushing with
lubricant (SAF-T-EZE Anti-Seize or equal).
F. Install packing adaptor (28), bevel side out over
the shaft (5) and into the valve bonnet so that the
hole through the side of the adaptor is aligned
with the tapped hole through the bonnet for the
safety pin (27).
g. Apply pipe sealant to the safety pin, install into
bonnet and tighten.
Safety pin must engage hole in packing adaptor.
Test by manually pulling on shaft to verify pin
engagement.
H. Install packing (19) so that skive cut of each
piece of packing is offset approximately 120°
from that of adjacent piece.
I. Install packing follower (22) over shaft and into
bonnet with bevel side out. Install packing box
flange (23) and nuts (24).
J. Install seal ring and retainer assembly as
described in section 3.3.2, 3.3.3 or 3.3.4
depending on seal type.
K. Install mounting bracket (31) and lever (32).
Follow instruction 3.1.2 Bracket Reassembly.
L. Evenly tighten packing flange nuts (24) against
packing flange (23) before placing valve into
service.
DO NOT over tighten packing flange nuts. After
valve has been in service, retighten packing
flange nuts evenly until any leaks are stopped.
3.4 Actuator Subassembly.
3.4.1 Model 33, sizes B & C. Refer to section 3.7
for size AC actuators.
3.4.1.1 Disassembly
The upper diaphragm case (84) is under spring
tension. A warning tag (97) is attached to each of
the three (3) long cap screws (95). The tension nuts
(96) attached to cap screws (95) must be evenly
removed last. The following procedure must be
followed to avoid injury.
A. Isolate the valve, vent process pressure and
shut off all electrical, signal air and supply air
lines to the valve.
B. If equipped with a handwheel, it must be rotated
to the disengaged position.
C. Remove air supply piping to upper diaphragm
case (84).
D. Remove side covers (46).
E. Remove retaining clips (40) and remove pivot
pin (39) and spacers (69) (handwheel only) to
free rod end bearing (94).
F. Loosen and remove all short cap screws (86) and
hex nuts (87). Mark upper case (84) and lower
case (20) so that they can be reassembled with
the same orientation of air inlet and mounting bolts.
g. Loosen each tension nut (96) approximately
three full turns.
The upper diaphragm case (84) should separate
from the lower case (91) as the tension nuts are
loosened the three turns. If it does not, before
proceeding, separate the upper diaphragm case
(84) by tapping it around the circumference or
inserting a screwdriver between the upper (84)
and lower case (91). If the cases still do not
separate, check that the actuator stem is not
hung up inside the bracket. DO NOT PROCEED
WITH DISASSEMBLY UNLESS THE CASES
CAN SEPARATE FREELY.
H. Continue loosening the tension nuts (96) evenly
approximately three turns each time ensuring
that the upper diaphragm case (84) and
diaphragm (85) continue to separate.
Note: Continue Step H until the tension nuts (96)
can be easily removed by hand indicating the
upper diaphragm case (84) is not under spring
tension.
I. Remove tension bolts (95) and upper diaphragm
case (84).
J. Remove diaphragm (85) and diaphragm plate
subassembly from the actuator.
K. Remove retaining clip (78). Remove clevis pivot
pin (79). Inspect for damage and/or wear in
clevis (80), lever (32), clevis pins (79, 39) and
rod end bearings (94). Replace if necessary.
L. Clean all mating/sealing surfaces which will
come in contact with the diaphragm (85).
3.4.1.2 Reassembly
A. Connect rod end bearing (94) to diaphragm
plate clevis (80) by installing clevis pin (79) and
retaining clips (78). Ensure that the stem (77)
is installed such that the wrench flats are at the
end furthest from the diaphragm plate (88).
