Sphere Flow and Barred Tees

Flow tees can be used to ensure the safe travel of spheres, foam pigs, metal bodied or intelligent pigs across side branches and should be incorporated into pipeline systems when the diameter of the side branch is 25% or more of the diameter of the main pipeline.

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Sphere flow tees are designed with a forged oversized tee, forged end reducers and a through pipe which is equal to the main pipeline internal diameter (I/D). The through pipe has a series of angled slots machined, ensuring the least resistance to the discs or cups of traversing pigs and minimum flow disturbance, equal to 1 or 1.5 times the branch diameter. Tees can be designed for flanged or weld end connections dependent upon client specification.

iNPIPE PRODUCTS™ offer fabrication in a full range of materials including carbon steels, stainless steels, duplex and solid inconel or monel overlay.

Benefits of Sphere Flow and Barred Tees

  • Sphere tees are available with weld preparation ends
  • and/or flanged ends
  • Depending on application weld caps or forged rings are incorporated into the tee design
  • Sphere tees can be designed and manufactured to
  • most oil and gas industry recognised piping or pressure vessel codes
  • Sphere tees are designed to ensure smooth transition through tees to prevent bypass and potential “stalling” of the sphere in the tee
  • Sphere tee design overcomes potential operational problems through the life of the pipeline. Bars, on barred tees, have been known to detach and create obstructions
  • Barred tees can also be designed and manufactured to the same international codes and standards