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To assure correct stem stroke, tighten the valve bonnet
and pull up on the stem to take up the free travel of
approximately 1/16-in. With the stem raised (no free
travel), adjust the stem button so that the distance from
the top of the stem button to the top of the valve bonnet
is 3-15/1 6 in. (100 mm) for the VP522A, or 4-1/1 6 in.
(103
mm) for the VP522B.
Without moving the stem button on the stem, tighten
the setscrew in the top of the stem button.
Put the actuator assembly back on.
Restore system to operation.
PARTS AND ACCESSORIES
Parts List
See Figure 3 and Tables 3 and 4 for available VP522
replacement parts.
Table 3. VP522A and B Parts List (See Fig. 3).
Fig.
Key
No.
Part No.
Screw-8-32 x 1/2 in. slot head (4)
2
Lockwasher, No. 4 (4)
3
Actuator top
4
312760
Diaphragm
4
Diaphragm for Series 1 Valves
5
Diaphragm Cup and Support Assembly
6
Spider
7
Star Spring
a
Slide
9
Spring Plate
10
Spring for all A models except
10
314436-00065
Spring for A1039 and A1047 models
10
315412
Spring for B101 1 and B1029 models
315413
10
Spring for B1003 model
11
Spring Retainer
12
Spider Base
13
Screw-1/4-20 x 3/8 in. socket head
14
Screw-1/4-20 x 3/4 in. filister head
15
Screw-1/4 x 1/4 in. socket head
16
Stem Button
17
314460
Brass Tube for A models
17
315409
Brass Tube for B models
1 8
Packing Nut
19
310143
Packing Discs (3)-cup down
20
310137
Packing Follower (2)-bevel up
21
310135
Packing Spring
22
Valve Bonnet
23
313825
Valve Seat for all A models except
23
314456
Valve Seat for A1039, A1237, and
23
314462
Valve Seat for A1047 and B1029
24
See Table 4
Stem and Disc Holder Assembly
25
Valve Body
Accessories
No accessories are available for the VP522A or B.
75-2598
Description
A1039 and A1047
A1039, A1237, and A1047; for all
B models except B1 011 and
B1029
011
B1
models
models
Table 4. Stem and Disc Holder Rebuild Kit*.
No.
0-S.
VP522A1005
VP522A1039
VP522A1047
VP522A1070
VP522A1088
VP522A1 096
VP522A1237
VP522B1003
VP522B1011
VP522B1029
* Also includes stem button and set
screw, packing, and instructions.
6
Part No.
313824A
314459A
3144598
313824C
313824D
313824E
314459c
315407A
3 15408A
315408A
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