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 are constructed of an Orenco Grade Ring Insert and a section of ribbed PVC riser pipe. Grade Ring Inserts can also be purchased separately.

  • PVC ribbed riser material
  • PVC construction on inserts for 12-inch and 18-inch nominal diameter (300-mm and 450-mm DN) riser pipe
  • ABS construction on inserts for 21-inch, 24-inch, and 30-inch nominal diameter (525-mm, 600-mm, and 750-mm DN) riser pipe

 

Sample Product Codes*

  • PRTA24-2 — grade ring insert for 24-inch nominal diameter (600-mm DN) riser pipe
  • GRI24 — grade ring insert for 24-inch nominal diameter (600-mm DN) riser pipe
  • GRI30 — grade ring insert for 30-inch nominal diameter (750-mm DN) riser pipe
  • GR18XX — grade ring, 18-inch nominal diameter (450-mm DN), XX = height in 3-inch (76-mm) increments
  • GR24XX — grade ring, 24-inch nominal diameter (600-mm DN), XX = height in 3-inch (76-mm) increments
  • GR30XX — grade ring, 30-inch nominal diameter (750-mm DN), XX = height in 3-inch (76-mm) increments
     

* For the full range of available product options, contact your local Orenco Distributor or Orenco.
 


Technical Data Sheet


Product Sheet

 

Orenco® Grade Ring Inserts