Drainage lines need a rodding point so a future blockage can be cleared without cutting into the pipe. A screw access plug provides that point: a threaded socket body with a removable cap. The 6-inch size fits a 6-inch drainage run. PVC-U threaded socket body with a removable lugged cap, sized for 6-inch (BS EN 1329 nominal equivalent). Wall thickness on this bore follows BS EN 1329 soil-pipe wall thickness for this bore, and the socket geometry follows BS EN 1329-1 so it seats correctly against other soil-and-waste PVC-U fittings on the same line.
