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What is the function of a dual diameter pig?

Here’s how dual diameter pigs are useful:

1. Cleaning: Dual diameter pigs are used to remove debris, scale, sediment, and other contaminants from the pipeline walls. The pig is propelled through the pipeline with the help of fluid or gas flow, effectively scraping and cleaning the internal surfaces as it moves along.

2. Inspection: Dual diameter pigs can be equipped with inspection tools such as cameras, sensors, or measurement devices. These tools allow for the inspection of the pipeline’s condition, such as detecting corrosion, cracks, or other defects.

3. Batch separation: In some cases, pipelines may transport different products or batches that need to be kept separate. Dual diameter pigs can be used to ensure that different products are effectively separated during transit.

4. Pipeline maintenance: By regularly running dual diameter pigs through a pipeline, operators can identify and address potential issues before they escalate into major problems.

Pipeline inspection gauges (PIG)

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