Quantcast Flexible Ball Joints

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TABLE 7-3.
Pipe Expansion per 100 Feet of Length
With Temperature Changes
E x p a n s i o n in Inches for Different Materials
Tempera-
Copper
Wrought Iron
ture (F)
Steel
(4)
(1)
(2
)
(3)
o
0
0
0
0.238
0.148
0.180
20
0.451
40
0.300
0.350
0.540
0.684
60
0.448
0.710
0.896
80
0.580
1.134
0.753
0.887
100
1.058
1.366
120
0.910
1.240
1.590
140
1.064
1.420
1.804
160
1.200
1.360
1.580
2.051
180
1.520
1.750
2.296
200
1.940
2.516
220
1.680
2.756
1.840
2.120
240
2.300
2.985
260
2.020
2.470
3.218
280
2.180
3.461
300
2.350
2.670
3.696
320
2.530
2.850
3.040
3.941
340
2.700
4.176
2.880
3.230
360
4.424
3.425
380
3.060
4.666
400
3.230
3.620
3.820
4.914
420
3.421
440
3.595
4.020
5.154
3.784
4.200
5.408
460
4.400
5.651
480
3.955
4.151
5.906
4.600
500
1
E x p a n s i o n in inches per 100 feet length of pipe, from
0F to pipe temperature shown in column (l).
absorbing vibrations or mechanical movements to ambient temperatures may be
m a d e of copper or other materials suitable for the job conditions.  A maximum
t r a v e l of 4 inches should be allowed for this type of joint.
3.3 Flexible Ball Joints.
B a l l joints consist of four main components:
( a ) The casing or body that holds the gaskets and ball
(b) The ball itself, which fits inside the casing
( c ) The inner and outer gaskets, i n s t a l l e d between the ball and the
c a s i n g , to provide a seal
7-7





 


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