Adapter Ring
Material - HDPE   Accepts 20" or 24" Risers

1.  Clean tank surface area over opening where riser adapter ring is placed; clear a 36" minimum area for the riser adapter ring. Check plug size for riser clearance.

2.  Place riser adapter ring on tank surface, mark anchor locations through the adapter ring anchor holes. 

3.  Determine the riser size you will use, the 24" position will require removal of the 20" ring.  Turn riser adapter ring over and cut along score line to remove this ring.

4.  Drill hole locations in tank surface and set anchors in place. Anchors can be any of the commonly available anchors.  Anchor kit (optional) is available and includes the drill bit, concrete anchors, bolts, and riser-sealing strip.

5.  On the underside of the riser adapter ring place the riser-sealing strip in position for the riser size used, butyl mastic or silicone sealants can be used.

6.  Place riser adapter ring in position and secure to tank with concrete anchor bolts.

7.  Place additional risers onto riser adapter ring and align screw holes to secure riser sections together.

8. Place riser cover onto top riser and secure with screws provided.

9.  The installation is ready for backfill but you may want to remove riser rings from any addtional risers if FROST is present in your area before final backfill.