Instruction Manual
D101299X012
RSS Valve
July 2017
10
Figure 7. Fisher RSS Valve Body Shown with Tool Used to Remove or Install Seat Ring
W4473
SEAT
RING
SEAT
RING
TOOL
Table 3. Seat Ring Tool Dimensions
VALVE
SIZE,
NPS
DIMENSIONS (MILLIMETERS)
A
O
B
O
C
O
D
E
F
G
1
36.9
37.2
47.2
47.5
54.8
55.6
6.4
4.8
7.9
7.6
190
1‐1/2
54.0
54.2
63.9
64.1
71.8
72.6
7.1
5.6
7.9
7.6
222
2
65.1
65.3
76.2
76.5
83.7
84.5
7.1
5.6
7.9
7.6
222
3
91.3
91.5
103.7
104.2
111.9
112.7
7.1
5.6
7.9
7.6
300
4
105.9
106.2
118.2
118.5
126.2
127.0
7.1
5.6
7.9
7.6
300
VALVE
SIZE,
NPS
DIMENSIONS (INCHES)
A
O
B
O
C
O
D
E
F
G
1
1.45
1.46
1.86
1.87
2.16
2.19
1/4
3/16
0.31
0.30
7‐1/2
1‐1/2
2.13
2.14
2.52
2.53
2.83
2.86
9/32
7/32
0.31
0.30
8‐3/4
2
2.56
2.57
3.00
3.01
3.30
3.33
9/32
7/32
0.31
0.30
8‐3/4
3
3.59
3.60
4.09
4.10
4.41
4.44
9/32
7/32
0.31
0.30
11‐7/
8
4
4.17
4.18
4.66
4.67
4.97
5.00
9/32
7/32
0.31
0.30
11‐7/
8
Figure 8. Seat Ring Tool
A3520-1
mm
(INCH)
139.7
(5‐1/2)
7.9
(5/16)
9.5
(3/8)
3.9
(5/32)
15.8
(5/8)
G
D
E
A
4
B
4
C
4
F
30
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