Consolidated 1900/P Series Safety Valves Instruction Manual
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© 2020 Baker Hughes Company. All rights reserved.
XIV. Inspection and Part Replacement (Contd.)
Figure 19a: Previous Design
Top Guided Nozzle
Figure 19b: Current Design
Bottom Guided Nozzle
Minimum
Height
E
F
H
D
G
Minimum
Height
F
H
D
E
G
Table 3: Allowable Machining Dimensions for Nozzle Seat
Orifice
D min.
E
+.005/-.000”
(+0.13/-0.00 mm)
F min.
G max.
H max.
in.
mm
in.
mm
in.
mm
in.
mm
in.
mm
D
.312
7.92
.025
0.64
.945
24.00
.679
17.25
.830
21.08
E
.312
7.92
.025
0.64
.945
24.00
.679
17.25
.830
21.08
F
.312
7.92
.025
0.64
.945
24.00
.679
17.25
.830
21.08
G
.312
7.92
.025
0.64
1.085
27.56
.868
22.05
.955
24.26
H
.250
6.35
.025
0.64
1.255
31.88
1.083
27.51
1.125
28.58
J
.375
9.53
.025
0.64
1.565
39.75
1.385
35.18
1.430
36.32
K
.437
11.10
.025
0.64
1.885
47.88
1.655
42.04
1.710
43.43
L
.437
11.10
.025
0.64
2.310
58.67
2.060
52.32
2.135
54.23
M
.437
11.10
.025
0.64
2.605
66.17
2.314
58.78
2.400
60.96
N
.500
12.70
.025
0.64
2.835
72.01
2.540
64.52
2.630
66.80
P
.625
15.88
.025
0.64
3.420
86.87
3.078
78.18
3.185
80.90
Q
.875
22.23
.025
0.64
4.425
112.40
4.050
102.87
4.180
106.17
R
1.000
25.40
.025
0.64
5.245
133.22
4.872
123.75
4.960
125.98
T
.750
19.05
.025
0.64
6.493
164.92
6.208
157.68
6.208
157.68
Standard
Adjusting Ring
Cross-Section
Adjusting Ring
Adjusting Ring Pin
A
B
Figure 20: Adjusting Ring & Ring Pin
Figure 19: Nozzle Critical Dimensions
