TDW PIG-SIG V - Page 52

47
Section IV – Pipeline Under Pressure
3.0 Continued
3.5 Aligning The Plug
A. Install the bleeder valve (Figure 4.53) into the 3/8
x ¼-inch bushing on the base of the T-101 D
M
(
Figure 4.54). Ensure the tapping valve is in t
he
open
position.
Figure 4.53. Bleeder Valve.
Figure 4.54.Installed Bleeder
Valve
✎ EXAMPLE
Removing a two-inch PIG-SIG V using a threaded
adapter and assuming Measurement “M” to be 3
inches and Measurement “N” is 10 inches:
Measurement “M” = 3”
Measurement “N” = 10”
TOTAL = 13”
The feed tube should be at 13 inches on the body tube
when the bottom of the plug holder contacts the
bottom of the one-inch hex drive recess in the PIG-SIG
V plug.
IMPOR TANT
If the feed tube is at the mark on the
body tube, continue on to Section
3.7.