24" Riser to Lid Adapter

The Adenus Technologies AT-R2L24 23 3/8" Riser to Lid Adapter is a durable ABS adapter designed to provide a secure, watertight connection between any 23 3/8" nominal-diameter ribbed PVC access riser and a Sim/Tech Filter cast iron lid in residential septic and onsite wastewater systems. Built for installers, the AT-R2L24 eliminates the need for a precision riser cut, ensuring every lid sits flush and level regardless of riser edge condition.

Key Features:

• Wide Application Range — Suitable for new installations, retrofits, and field repairs across a variety of residential onsite wastewater systems. Including septic tanks, STEP systems, pump tanks, dosing tanks, aerobic treatment units (ATUs), and holding tanks.
• Flush Lid Fit Every Time — Accommodates uneven or damaged riser edges, ensuring a flush, level lid installation without requiring a clean or precision riser cut.
• Watertight Connection — Bonded with polyurethane sealant (sold separately) for a durable, long-lasting watertight seal between the adapter and riser.
• Compatible with Sim/Tech Filter Cast Iron Lids — Designed specifically to interface with Sim/Tech Filter cast iron access lids for a secure, reliable fit.
• No Specialized Tooling Required — Simple installation reduces labor time and minimizes the risk of field errors.
• Durable ABS Construction — Built from corrosion-resistant, black ABS for reliable long-term performance in underground wastewater applications.

Downloads:

AT-R2L24 Technical Data Sheet

AT-R2L24 Installation Instructions