A Polyadaptor is used in conjuction with Instantor Brass fittings to join Normal Gauge Polyethylene pipe.
It comprises of a sleeve and insert.
The insert in inserted into the pipe to support the wall of the pipe.
The sleeve replaces the olive (ring) in the fitting to create a compressed joint.

Available in 1/2", 3/4", 1", and 1 1/4".