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

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Consolidated 1811 Series Safety Valve Instruction Manual
| 17 © 2020 Baker Hughes Company. All rights reserved.
A. General Information
Once the valve is disassembled, the appropriate parts
can be inspected for damage and their suitability for
reuse.
B. Specific Steps
1.
Inspect the guide inside diameter for egging, and
insure the inside surface is smooth. The threads
on the outside must be in good condition to insure
the adjusting ring/guide will adjust when the valve
is hot. If serious, large scale galling or ridges
corresponding to the grooves in the disc are
present, the part should be replaced.
2. Disc :
The Flat Solid Disc (FSD) and the Thermodisc Disc
(TD). Each of these disc designs is available in
either a low pressure (LP) or high pressure (HP)
version.
Disc
1811
(LP) (LP)
FSD TD
(HP) (HP)
Table 2
XII. Inspection and Part Replacement
1811-HP Flat Solid Disc Machining Dimensions
Figure 9: HP Flat Solid Disc
Table 3a: Flat Seat Disc Replacement Criteria
1
Orifice
H min J min
in. mm in. mm
F 1.609 40.87 .308 7.82
G 1.547 39.29 .308 7.82
H 1.609 40.87 .406 10.31
J 1.578 40.08 .402 10.21
K 1.859 47.22 .475 12.07
L
2.266 57.56 .497 12.62
M 2.359 59.92 .558 14.17
N 2.922 74.22 .621 15.77
P 3.313 84.15 .762 19.35
Q 3.922 99.62 .840 21.34
Table 3b: Flat Seat Disc Rework/Inspection
Dimensions
Orifice
F
+.002/-.003 in.
(+0.05/-0.08 mm)
G
in. mm in. mm
F .028 0.71 .062
± .007
1.57
± 0.18
G .028 0.71 .062
± .007
1.57
± 0.18
H .028 0.71 .062
± .007
1.57
± 0.18
J .028 0.71 .062
± .005
1.57
± 0.13
K .028 0.71 .062
± .007
1.57
± 0.18
L .028 0.71 .062
± .007
1.57
± 0.18
M .028 0.71 .062
± .007
1.57
± 0.18
N .028 0.71 .062
± .007
1.57
± 0.18
P .039 0.99 .078
± .007
1.98
± 0.18
Q .039 0.99 .105
± .005
2.67
± 0.13
1. Once a minimum dimension is met, disc is to be
discarded.