Baker Hughes Consolidated 1811 FA-0-3X1-20, Instruction Manual

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Consolidated 1811 Series Safety Valve Instruction Manual
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1. All other dimensions identical to values found in table 3b
Table 5: Low Pressure Disc Rework Inspection Dimensions
(1)
Orifice
C Flat Seat D Thermodisc D N
in. mm in. mm in. mm in. mm
F - - .834
± .002
21.18
± 0.05
.860
± .002
21.84
± 0.05
- -
G - - 1.076
± .002
27.33
± 0.05
1.092
± .002
27.74
± 0.05
- -
H - - 1.349
± .002
34.26
± 0.05
1.344
± .002
34.14
± 0.05
- -
J 1.983
± .005
50.37
± 0.13
1.680
± .002
42.67
± 0.05
1.670
± .002
42.42
± 0.05
.056
+
-
.002
.003
1.42
+
-
0.05
0.08
K 2.372
± .005
60.25
± 0.13
1.977
± .002
50.22
± 0.05
1.990
± .002
50.55
± 0.05
.079
± .002
2.01
± 0.05
L 2.948
± .005
74.88
± 0.13
2.418
± .002
61.42
± 0.05
2.466
± .003
62.64
± 0.08
.096
± .002
2.44
± 0.05
M 3.307
± .005
84.00
± 0.13
2.722
± .002
69.14
± 0.05
2.750
± .003
69.85
± 0.08
.102
± .002
2.59
± 0.05
N 3.639
± .005
92.43
± 0.13
3.060
± .003
77.72
± 0.08
3.040
± .005
77.22
± 0.13
.111
± .002
2.82
± 0.05
P 4.418
± .005
112.22
± 0.13
3.700
± .003
93.98
± 0.08
3.680
± .005
93.47
± 0.13
.116
± .002
2.95
± 0.05
Q 5.795
± .005
112.22
± 0.13
4.800
± .003
121.92
± 0.08
4.780
± .005
121.41
± 0.13
.149
± .002
3.78
± 0.05
XII. Inspection and Part Replacement (Cont.)
3. Clearance between the disc and upper ring/
guide:
Measure the inside diameter of the guide and the
outside diameter of the disc; subtract to find the
cold clearance.
The maximum clearance should not be greater
than the value indicated in Table 6. Greater
clearances can indicate wear and can generate
alignment problems and cause the valve not to
reseat properly.
Note: Once clearance exceeds table values, further inspection is required for the disc and adjusting ring.
Table 6: Allowable Clearance Between Upper Adjusting Ring and Disc
Orifice
Clearance
Disc Outside
Diameter
Upper Adjusting Ring
(Inside Diameter)
min max
in. mm in. mm in. mm in. mm
F .004 0.10 .011 0.28 1.189 30.20 1.200 30.48
G .008 0.20 .015 0.38 1.521 38.63 1.536 39.01
H .007 0.18 .014 0.36 1.905 48.39 1.919 48.74
J .009 0.23 .014 0.36 2.445 62.10 2.459 62.46
K .006 0.15 .013 0.33 2.926 74.32 2.939 74.65
L .011 0.28 .014 0.36 3.638 92.41 3.652 92.76
M .007 0.18 .014 0.36 4.079 103.61 4.093 103.96
N .012 0.30 .019 0.48 4.483 113.87 4.502 114.35
P .008 0.20 .017 0.43 5.448 138.38 5.465 138.81
Q .010 0.25 .019 0.48 7.137 181.28 7.156 181.76