Pig Retainers

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The Moffat Pig Retainer™ (sometimes known as a Pig Lock) provides a reliable mechanism to prevent pigs moving inside a pipeline during Pig Launcher / Receiver installation and removal operations. A high yield pin is extended and withdrawn into the barrel by means of a Remote Operated Vehicle (ROV) rotary interface. This pin reacts against the nose of the pin to hold it in position during deployment or retrieval. Depending on the pig size the pin can retain a pig under a differential pressure of up to 10 BAR.

Key features:

  • 2”, 4”, 6” Sizes
  • Complete with ROV interface panels and protection frames
  • ROV interfaces in accordance with API 17D (ISO 13628-8:2002)
  • Valves fitted with inlet strainers for flooding operations