Grade Rings and Inserts
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Grade Rings and Grade Ring Inserts

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Grade Rings and Grade Ring Inserts (GR, GRI)

Orenco Grade Rings are used to provide a watertight extension to the height of an existing access riser or pump basin; they consist of an Orenco Grade Ring Insert and a section of riser pipe. Grade Ring Inserts can also be purchased separately.

  • PVC construction on inserts for 12in and 18in nominal diameter (300mm and 450mm DN) riser pipe
  • ABS construction on inserts for 24in and 30in nominal diameter (600mm and 750mm DN) riser pipe