TDW PIG-SIG V User Manual

44
Section IV – Pipeline Under Pressure
3.0 Continued
3.3 Calculating the Travel Distance
With the boring bar fully retracted and the feed tube
at the zero mark on the body tube, calculate the
distance the plug holder travels to contact the bottom
recess in the PIG-SIG V.
A. Measure from the bottom of the one-inch hex
drive recess in the PIG-SIG V to the face of t
he
v
alve (Figure 4.45). Record this as Measurement
“N.”
B. Close the tapping valve (Figure 4.46).
Figure 4.45. Measurement
“N”
Figure 4.46. Close Tapping
Valve
C. Measurement “M” is the distance from the valve
face to the bottom of the plug holder, when fully
retracted.
Threaded Valves: Measure from the face of the
adapter to the bottom of the plug holder. Mark
this measurement on the outside of the adapter.
Flanged Valves: Measure from the flange face of
the drilling machine adapter to the bottom of the
plug holder. Record this as Measurement “M.”

TDW PIG-SIG V Specifications

General

Brand	TDW
Model	PIG-SIG V
Category	Measuring Instruments
Language	English