PIG TRAPS DESIGN, OPERATING & SELECTION

As part of a complete pigging system, pig traps allow pigs to be inserted into and
removed from a pipeline which is to undergo a pigging program and which is likely to
be under pressure.
Key
a. Pressure Gauge
b. Vent
c. Pressure Relief
d. Drain
e. Pig Signaller
f. Kicker Valve (Launcher) Bypass Valve (Receiver)
g. Mainline Bypass Valve
h. Mainline Trap Valve
i. Quick Release Closure

Introduction
1 Design Parameters
2 Operating Method
3 Selection

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