Table of Contents
Advertisement
2.0 Introduction
2.1 Purpose
The purpose of this manual is to
provide
instructions
installation,
preventative maintenance of the
complete TDW PIG-SIG
Scraper Passage Indicator and
installation
indicator assembly on a plug
assembly
already
pipeline.
2.2 Description
The
TDW
Indicator (PIG-SIG IV) is a
device that is installed on a
pipeline to detect the passage of a
pig or sphere.
The PIG-SIG IV has a trigger that
extends into the pipeline through
a welded fitting that has been
tapped. When a pig passes, the
trigger is tripped, activating the
signaling mechanism.
Signaling mechanisms available
include a flag indicator, electrical
indicator, combination flag and
electrical indicator, or rotary cap
indicator.
All
compatible with all standard plug
assemblies now in the field and
are interchangeable.
This makes it possible to use
these units as conversion kits as
well
as
complete
Indicators.
for
operation
of
a
PIG-SIG
set
in
Scraper
Passage
indicators
PIG-SIG
The PIG-SIG IV is weatherproof
and corrosion resistant. It features
housings
space age plastic for durability
and weather resistance. The flag
the
indicator offers high visibility
and
from the air or ground.
IV
The
manufactured
weldable material. The PIG-SIG
Plug Assembly can be installed
a
on or removed from a pressured
pipeline using a TDW T-101 or
T-101b Drilling Machine and
accessories.
The PIG-SIG IV is available in
various
operation,
materials
depending
requirements, including:
• Flag Indicator with Manual
Reset flag
• Rotary Cap Indicator with
Manual Reset
• Electrical Indicator with Auto
Reset
• Flag/Electrical Indicator with
Auto Reset
are
• Indicator Extensions from 1
foot to 15 feet
• Unidirectional or Bidirectional
Trigger Mechanisms
• Special Materials and O-Ring
Seals
• Models for Environmentally
Harsh Conditions
3
manufactured
carbon
steel
from
combinations
indication
of
construction,
on
from
nipple
is
easily
of
and
piping
Advertisement
Table of Contents
