Operators use pipeline pigs to clean, batch, dewater, and inspect lines, with pig launchers and receivers as the core equipment for launching and retrieving those pigs.
Two common launcher/receiver systems are barrel traps and pigging valves. Both accomplish the same objective, but with fundamentally different constructs that lead to distinct practices and best use cases. In this article, we explore those practices and differences to derive where each thrives and where each is weaker.
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