Fisher-Rosemount Design CV500, Инструкция по эксплуатации

Страница: 13 / 28

RETAINER TOOL FOR 3 THROUGH 12ĆINCH
VALVE SIZES
B1899-1 / IL
Figure 7. Data for Making and Using Retainer Tool
Design CV500
13
VALVE
SIZE
A B D F G
H
(SQUARE)
A B D F G
H
(SQUARE)
mm Inches
3 79.2 33.3 7.9 41.4 7.9 19.0 3.12 1.31 .31 1.62 .31 .75
4 104.6 33.3 7.9 41.4 7.9 25.4 4.12 1.31 .31 1.62 .31 1.00
6 155.4 38.1 11.2 63.5 11.2 25.4 6.12 1.50 .44 2.50 .44 1.00
8 203.2 50.8 11.2 101.6 11.2 38.1 8.00 2.00 .44 4.00 .44 1.50
10 241.3 50.8 11.2 127.0 19.1 38.1 9.5 2.00 .44 5.00 .75 1.50
12 273.0 50.8 11.2 127.0 25.4 38.1 10.75 2.00 .44 5.00 1.00 1.50
VALVE SIZE
RETAINER TORQUE
VALVE SIZE
N
S
m Lbf
S
ft
3 515 380
4 1170 860
6 2305 1700
8 3120 2300
10 4750 3500
12 6100 4500
4. Rotate the V-notch ball (key 2) to the fully open
position.
5. Drive out the groove pin (key 39) that secures the
ball (key 2) to the follower shaft (key 38). Remove the
groove pin from the ball ear in the direction shown in
figure 8.
Using a pin punch and hammer, firmly strike the
chamfered end of the expansion pin through the
smaller hole. You may need to bend the pin or drill the
pin before it can be completely removed. Remove both
pins from the ball ear in the direction shown in figure 8.
Driving the pins in the other direction will tighten the
pins.
6. For 3 through 8-inch sizes, remove the pipe plug
(key 29). Using a punch, drive the follower shaft (key
38) into the center of the ball (key 2). Use care to
avoid dropping the follower shaft.
7. For 10 and 12-inch sizes, remove the hex nuts
(key 44), and then remove the bottom flange (key 40).
Thread a bolt into the end of the follower shaft and pull
the follower shaft out of the valve. Refer to table 6 for
thread sizes. The bearing (key 6) may come out with
the follower shaft.