MULTI-DISC, BI-DIRECTIONAL STEEL MANDREL GAUGING PIG

 

Many configurations are available to accommodate the demanding pipeline requirements found in today’s pipelines.

The optimum speed for pigs is approximately 3 to 5 feet per second. Over the years this has proven to yield the best results for pigging operations. Pigs can be used at lower speeds (even as low as 1 foot per second) but it must be understood that the pig will experience a "stop & go" effect, which could allow the pig to become stuck.

UTILITY:

  • Bi-directional pigs with two or more replaceable discs, and options for scraping discs, and wire brushes.
  • Batching Pigs with two or more replaceable urethane cups.
  • Multi-Dimensional Pigs capable of traversing two or more pipe sizes.
  • Many configurations available, such as bumper noses, transmitter cavities, magnets, etc.
  • Steel Body: Includes the main body tube, two steel retaining rings (one for each end), and the nuts and bolts required to assemble.
  • Two Guides: The "guides" are the two polyurethane discs on the ends. The outside diameter of the guide is very near the inside diameter of the pipeline, and they are extra-thick because they take the brunt of most impacts while traveling down the line.
  • Four Seals: The "seals" are the four middle polyurethane discs. Their outside diameter is greater than the inside diameter of the pipeline. Their purpose is to maintain a good seal with the pipeline, to ensure that the pig is propelled efficiently and that a good fluid interface is maintained.
  • Six Spacers: The "spacers" are small discs between the guides and seals to space out the different discs so that they function separately.
  • Aluminum Sizing Plate: The standard thickness is 1/4", and can be slotted or solid. Typically this plate is sized 90 -95% less than the pipeline internal diameter.

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