• Weld-on Nipple or Flanged
Mounting
• Stainless or Brass Plug
Assemblies
• "Build Your Own" PIG-SIG
IV Assembly (See Appendix.)
Shown in Figure 1 is the manual
reset with flag indicator model.
Within the above four types, the
PIG-SIG IV is available in
several variations, including such
options as bi-directional or
unidirectional detection, O-ring
material and material used in plug
construction. Several extension
lengths are available to elevate
the indicator. The "Build your
own PIG-SIG" charts at the end
of this manual show all the
variations available.
The PIG-SIG IV also can be
installed on a line under pressure,
without taking the line out of
service, using the TDW T-101 or
T-101b Drilling Machines. This
manual includes installation
procedures for each drilling
machine.
Figure 1. Manual Reset with Flag
Indicator
4