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WWW.POLYLOK.COM24” RISER ADAPTER RING
RISER ADAPTER RING INSTALLATION INSTRUCTIONS
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.
Polylok 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, use Polylok stainless steel screws to secure
riser sections together.
8. Place riser cover onto top riser and secure with Polylok tamper resistant screws, these are #10 x 1.5'' square drive
screws that take an R-2 bit.
9. The installation is ready for backfill, remove frost rings from any additional risers if FROST is present in your area
before final backfill.