The Double E-Loc is a locking compression coupling used to join smooth, ribbed, corrugated or Figure 8 High Density Polyetylene (DHPE) conduit. The locking, pressure-tight design makes the Double E-Loc an ideal coupling for pneumatic cable placing applications when air and watertight integrity of the system is imperative. Unmatched pressure ratings, pullout resistance, no metal parts, and no special tools make the Double E-Loc the preferred coupling. Lock rings specially designed to grip ridged PVC and steel pipe are also available.