PIN
R I N G
TUBE
Fig. 15
Elliott Tube Plug
RETUBING (See Table 6)
When retubing is to be
done, obtain the service of qualified personnel, ex-
perienced in boiler maintenance and repair. Most
standard procedures can be followed, except that for the
tubes in the 30GT coolers, a
crush is recommended
in setting torque
diameter tubes
are used in the 30GT cooler).
Example:
a.
Tube sheet hole diameter . . . .
in. (16.00 mm)
b. Tube
. . . . . . . . .
in, (15.87 mm)
c.
minus b) . . . . . .
in. (0.
mm)
d. Tube ID before
(use Elliott tube gage) . . . . . . . , 0.549
(13.9 mm)
e.
of twice the
thickness
of b minus . . . . . . . . . ,
in. (0.10 mm)
f. Tube ID after rolling
d
.
. . .
in.
mm)
NOTE: The tubes next to the gasket webs must be
flush with
tube sheet
ends).
Table 6
Tubes and Plugs
Wall Thickness,
i n .
Plain End
Section
COMPONENTS FOR
PLUGGING
For Tubes
Brass Pin
Brass Ring
Fot
Tubes
B r a s s
Brass Ring
L o c t i t e
0.038 (0.97)
0.025 PJ.64’)
PART NC?.
853002-631
N o .
*Check
thickness
(23 ga).
from
Company, Lagunda Operation, Springfield,
be obtained locally.
15
