This document is the 12”-24” Dual Wall HP Storm Watertight Connection using a Precast Compression Gasket. Diagrams and tables provided.

The top diagram of the 12”-24” Dual Wall HP Storm watertight connection using a Precast Compression Gasket shows the precast watertight connector (A-LOK), Dual wall HP storm, adapter OD and sanitite manhole adapter.

The corresponding Sanitite HP manhole adapter table lists the values for pipe size, adapter OD, ADS product codes and A-LOK.

The bottom diagram shows the precast watertight connector (A-LOK), Dual wall HP storm, adapter OD and nyloplast manhole adapter (12”-24” only).

The corresponding nyloplast manhole adapter table lists the values for pipe size, adapter OD, nyloplast product codes and A-LOK.

Notes state that performance dependent on installation. Ensure that manhole gasket is uniformly seated around structure adapter to prevent differential settlement between the pipe and manhole. The cast-a-seal connection is for use with square manholes only. See standard detail STD-201 and technical note 5.04 connections to manholes and structures for installation recommendations.