Checking Spindle Concentricity - Baker Hughes Consolidated 19000 Series Instruction Manual

XIII. Maintenance (Contd.)
Q
Valve Type
in. mm
19096L,M 0.461 11.71 0.025
19096H 0.461 11.71 0.025
19110L,M 0.461 11.71 0.025
19110H 0.461 11.71 0.025
19126L,M 0.527 13.39 0.025
19126H 0.527 13.39 0.025
19226L ,M 0.705 17.91 0.025
1 1
19226H 1 0.705 17.91 0.025
19357L ,M 0.885 22.48 0.025
1 1
19567L 1 ,M 1 1.113 28.27 0.025
1. These valves have a 15° angle as shown in Figure 12 (-2 Metal Seat Design).
C. Checking Spindle
Concentricity
1. General Information
It is important that the spindle (9) of a safety relief
valve be straight in order to transmit the spring load to
the disc without lateral binding. Over-gagging is one
of the common causes of bent spindles. To check the
essential working surfaces of the spindle, the method
stated in the next section is recommended.
2. V-Block Support Set Up
a. The ball-pointed spindles should be placed in a
piece of material, "B" that has been recessed to
permit free rotation of the spindle (see Figure 13).
A
C
B
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Baker Hughes
Table 7: Rework Dimensions of the Disc Seat
Disc (Metal Seat)
R min.
(-1 Design)
in. mm in.
0.64 0.243
0.64 0.243
0.64 N/A
0.64 N/A
0.64 0.243
0.64 0.243
0.64 0.305
0.64 0.305
0.64 0.493 12.52 0.459 11.53 0.852 21.64
0.64 0.493 12.52 0.478 12.01 1.058 26.87
X X
A
Section X-X
45
0
Spring
Washer
Seat
Figure 13: V-Block Support Setup
S min.
(-2 Design)
mm in. mm in.
6.17 0.234 5.94 0.426 10.82
6.17 0.491 12.47 0.426 10.82
N/A 0.234 5.94 0.426 10.82
N/A 0.491 12.47 0.426 10.82
6.17 0.241 6.12 0.489 12.42
6.17 0.491 12.47 0.489 12.42
7.75 0.272 6.91 0.676 17.17
7.75 0.546 13.87 0.676 17.17
b. Support the spindle with a V-block "A" placed near
the upper end of the spindle, but below the threads.
c. Apply a machinist's indicator at approximately
45° to the outer edge of the spring washer seat at
"C". Rotate the spindle. The total indicator reading
should not exceed .005-in (0.13 mm). Straighten the
spindle, if necessary.
Bearing Surface "T"
(-2 Spindle)
O-Ring Retainer (Soft Seat)
Q R min.
mm in. mm
N/A N/A 0.151
N/A N/A 0.151
N/A N/A 0.151
N/A N/A 0.151
N/A N/A 0.151
N/A N/A 0.151
0.25 0.64 0.199
0.25 0.64 0.199
0.25 0.64 0.244
0.25 0.64 0.244
© 2020 Baker Hughes Company. All rights reserved.
S min.
in. mm
3.84
3.84
3.84
3.84
3.84
3.84
5.05
5.05
6.20
6.20