Multiple 4” NB spindle-bodied 2–4D pigs from Nylacast’s Pipeline Engineering division are now prepared for operational use. These units form part of a standard range of pipeline pigging tools used across operators to support efficient pipeline performance.
A pipeline pig is a device that is inserted into and travels through a pipeline, performing functions such as pipeline cleaning, product separation, and basic inspection support. The design of each pig is selected according to the operational requirements and internal geometry of the pipeline in which it will be used.
The 2–4D spindle and mandrel multi-bolt bodied configuration are designed with a combination of structural and functional elements. Each unit includes two support discs and four seal discs, arranged with multiple spacer discs positioned between them. Retaining mechanisms are fitted at both ends to maintain assembly stability during operation. This arrangement allows the pig to maintain optimum support and sealing contact within the pipeline while moving through the line executing operational duties.
The 2–4D design is commonly used as a general-purpose platform within pigging operations. It can support a range of tasks including basic line cleaning and product separation between batches. In addition, the structure allows for the integration of optional components such as brushes for debris removal, gauge plates for internal diameter verification, magnets for ferrous material collection, and other application-specific attachments where required.
Each pig is manufactured to suit the specific pipeline internal dimensions and geometry it is intended to operate in. This sizing is important to ensure consistent sealing efficiency, controlled movement, and reliable performance during service.
Pipeline pigging is an important maintenance practice used to manage the internal condition of pipelines. The primary pigging function is the removal of deposits that can accumulate on pipe walls over time. These deposits can reduce flow efficiency and contribute to internal corrosion. Regular pigging helps maintain optimal flow conditions and supports the long-term integrity of the pipeline.
Curious how this setup could improve your pipeline performance? Speak directly to our team at: sales@nylacast.com