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Baker Hughes
© 2020 Baker Hughes Company. All rights reserved.
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).
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.
XIII. Maintenance (Contd.)
Table 7: Rework Dimensions of the Disc Seat
Valve Type
Disc (Metal Seat)
O-Ring Retainer (Soft Seat)
Q
R min.
S min.
Q
R min.
S min.
(-1 Design)
(-2 Design)
in.
mm
in.
mm
in.
mm
in.
mm
in.
mm
in.
mm
in.
mm
19096L,M
0.461 11.71 0.025 0.64 0.243 6.17 0.234 5.94 0.426 10.82 N/A
N/A 0.151 3.84
19096H
0.461 11.71 0.025 0.64 0.243 6.17 0.491 12.47 0.426 10.82 N/A
N/A 0.151 3.84
19110L,M
0.461 11.71 0.025 0.64
N/A
N/A 0.234 5.94 0.426 10.82 N/A
N/A 0.151 3.84
19110H
0.461 11.71 0.025 0.64
N/A
N/A 0.491 12.47 0.426 10.82 N/A
N/A 0.151 3.84
19126L,M
0.527 13.39 0.025 0.64 0.243 6.17 0.241 6.12 0.489 12.42 N/A
N/A 0.151 3.84
19126H
0.527 13.39 0.025 0.64 0.243 6.17 0.491 12.47 0.489 12.42 N/A
N/A 0.151 3.84
19226L
1
,M
1
0.705 17.91 0.025 0.64 0.305 7.75 0.272 6.91 0.676 17.17 0.25
0.64 0.199 5.05
19226H
1
0.705 17.91 0.025 0.64 0.305 7.75 0.546 13.87 0.676 17.17 0.25
0.64 0.199 5.05
19357L
1
,M
1
0.885 22.48 0.025 0.64 0.493 12.52 0.459 11.53 0.852 21.64 0.25
0.64 0.244 6.20
19567L
1
,M
1
1.113 28.27 0.025 0.64 0.493 12.52 0.478 12.01 1.058 26.87 0.25
0.64 0.244 6.20
1. These valves have a 15° angle as shown in Figure 12 (-2 Metal Seat Design).
(-2 Spindle)
Figure 13: V-Block Support Setup
C
A
B
A
X
X
Section X-X
Spring
Washer
Seat
45
0
Bearing Surface “T”
Содержание Consolidated 19000 DA
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