4in Mechanical Joint Wedge Restraint for Ductile Iron Pipe

This ONE-LOK™ wedge restraint is designed for 4-inch ductile iron pipe with mechanical joint connections and 350# pressure class rating. The restraint uses precision-contoured wedge segments that engage via an actuating bolt with a cam-action principle, gripping the pipe wall and providing restraint against thrust, subsidence, and seismic forces within AWWA standard deflection limits. The elongated wedge contour prevents point loading damage to the pipe and internal cement lining.