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FlowAct Diaphragm Linear Actuator FCD VLENIMFACTA4 10/16
64
Item #
Part
WW
EU
202
6.1
Diaphragm Casing
203
6.2
Diaphragm Casing
211
6.12
Stem
220
6.14
Disk (2x)
225
6.16
Diaphragm (2x)
227
6.15
Diaphragm Plate (2x)
228
6.13
Spacer Bushing (2x)
229
6.21
Actuator Spring
231
6.22
Distance Plate (2x)
253
6.8
Lower Guide Bushing
254
6.80
Plain Bearing (2x)
255
6.18
Thrust Washer (2x)
258
6.26
Vent Plug (2x)
272
6.17
O-Ring (2x)
273
6.11
Scraper Ring
275
6.10
O-Ring (2x)
276
6.9
O-Ring (3x)
279
6.46
O-Ring (18x)
326
6.23
Spring Adjusting Plate (2x)
334
6.45
Hexagon Bolt (18x)
335
6.3.1
Hexagon Bolt - short (40x)
1)
336
6.3.2
Hexagon Bolt - long (8x)
1)
337
6.5
Plain Washer (48x)
1)
339
6.25
Protection Sleeve (8x)
348
6.20
Special Nut
349
6.19
Lock Washer (2x)
351
6.4
Hexagon Nut (48x)
373
6.82
Intermediate Guide Bushing
374
6.47
Distance Bushing (2x)
380
6.81
Stem Extension
1)
Alternatively, hex head assembled screws with captive flat washers are used for this application.
275
231
326
229
275
273
202
373
254
258
276
279
334
211
255
225
272
220
227
228
374
349
380
276
202
253
254
276
279
334
339
351
374
348
334
279
202
203
258
337
335
336
Table 37: Actuator parts
Figure 34: Actuator parts
44. Lubricate the new O-ring (272) with an appropriate lubricant.
45. Lower the distance bushing (374), spacer bushing
(228), disk (220), diaphragm plate (227),
diaphragm (225), O-ring (272), thrust
washer (255) and lock washer (349)
onto the stem extension (380).
NOTICE
Arrange the distance bushing like an
correctly wearing hat. The internal
stroke stop takes over the special nut.
46. Lubricate the thread of the stem extension (380) with
an appropriate lubricant.
NOTICE
The diaphragm plate should be posi-
tioned to the diaphragm with the aid
of the positioning template. Mark the position.
47. Fix the stem (211) with the stem clamping tool against
twisting.
48. Load the springs by tightening the special nut (348)
clockwise using a suitable torque wrench, see section
15 torque requirements.
NOTICE
We recommend you to use a hy-
draulic spring press, as a minimum
requirement a beam and threaded rods in 8.8 quality
(ISO 898-1) or higher as well as washers and nuts al-
ternatively.
49. Remove the stem clamping tool.
50. Install the diaphragm casing (203), positioning the
casing such that the air connections opposites.
51. Lubricate the threats of the long hexagon bolts (336) with
an appropriate lubricant and load the springs uniformly
in a clockwise sequence by tightening the long hexagon
bolts (336), plain washers (337) and hexagon nuts (351).
52. Install the short hexagon bolts (335), plain washers (337)
and hexagon nuts (351).
53. Tighten the nuts (351) using a crosswise pattern in
four steps, see section 15 torque requirements.
54. Install the protection sleeve (339).
55. Perform 3 full strokes and check the tightening of the
casing bolting.
56. Log the maintenance interval and the work performed.
57. The actuator subassembly is ready to be mounted on
the valve and the accessories attached.