
Type ACE97
17
Actuator Assembly
Refer to Figure 20.
1. Place the actuator gasket (key 27) and lower actuator
case (key 113) onto the body (key 18). Secure with
lock washers and hex-head screws (keys 28 and 29).
Tighten all hex-head screws uniformly.
2. Place the actuator gasket (key 27) onto the pad valve.
3. Attach the lower actuator case (key 113) to the
pad valve with cap screws, lock washers (keys 29
and 28), and seal bushings (key 46, NPS 1 / DN 25
valve only).
4. Place an O-ring (key 118) into the groove of the
diaphragm bolt (key 117).
5. Apply Loctite
®
#222 to the threads of the
diaphragm bolt (key 117).
6. Build the diaphragm sub-assembly with the lower
diaphragm plate (key 116), diaphragm (key 163),
and upper diaphragm plate (key 119). Fasten with
the diaphragm bolt (key 117) and actuator
stem (key 94).
7. Place the diaphragm sub-assembly into the lower
actuator case (key 113) and align the diaphragm
ange bolt holes with the actuator case ange holes.
8. Install the range spring(s) (key 95 and/or 96) and
associated hardware per your spring range, as
shown in Figure 12.
9. Set the upper actuator case (key 114) into
position, aligning the ange holes.
10. Place cap screws (key 29) in the aligned ange
holes and fasten with lock washers and nuts
(key 28 and 31). Tighten uniformly.
Depad Main Valve Assembly
Refer to Figures 16, 17, and 18.
Note
For the depad main valve assembly,
use Dow Corning
®
#3452 chemical
resistant lubricant.
1. Build the stem (key 75) assembly by installing the
seat O-ring (key 76) and cage (key 77) with the
cap screw (key 78) and lock washer (key 79). The
stem may be held on the at sides using soft-jaws
for this purpose.
2. Lubricate the main valve stem (key 75).
3. Carefully install the stem seal (key 81)—closed-end
rst—into the seal retainer (key 80).
4. Slide the seal retainer (key 80) over the stem
assembly with the open end of the stem seal (key 81)
facing up. Take care not to scratch the stem.
Slide the seal retaining plate (key 83) over the
stem assembly with the counter-bore facing up.
5. For 1 and 2 NPT Main Valves: Install
the spring (key 84) into the groove of the seal
retaining plate (key 83) and spring guide (key 85).
Secure with the retaining ring (key 86). Use a
small at screw driver to engage the notch in the
retaining ring. Twist to install the retaining ring
into the groove.
For NPS 3 and 4 / DN 80 and 100 Main Valves:
Install the spring (key 84) into the groove of the
seal retaining plate (key 83) and spring guide
(key 85). Secure with a cap screw and lock
washer (keys 126 and 79).
6. For 1 NPT and NPS 3 and 4 / DN 80 and 100 main
valves, place the O-ring (key 82) into the main
valve body (key 91). For 2 NPT main valve, place
the O-ring (key 82) into the groove of the seal
retainer (key 80). Carefully install the stem and
spring sub-assembly. Press down on the stem
(key 75) to ensure it is able to move. Install the
second O-ring (key 82).
7. For 1 NPT Main Valve: Lubricate the threads
of the bonnet (key 87) with anti-seize. Thread
into place and tighten.
For 2 NPT and NPS 3 and 4 / DN 80 and 100 Main
Valves: Install the bonnet (key 87) and secure with
cap screws and lock washers (keys 160 and 161).
Tighten uniformly.
8. Connect all tubing lines (key 143).
9. Reinstall the valve according to the instructions in
the Installation section of this manual.
Parts Ordering
Each Type ACE97 Pad-Depad valve is assigned a
serial number printed on the nameplate on the main
valve actuator. Refer to this number when contacting
your local Sales Ofce for assistance or when ordering
replacement parts. When ordering a replacement part,
be sure to reference the key number for each needed
part and include the complete 11-character part
number from the following parts list.
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