The Series 3800 MEGA-COUPLING is a restrained coupling for similar and dissimilar pipe materials. It can restrain and couple either or a combination of Ductile Iron Pipe, Steel Pipe, AWWA PVC C900 PVC Pipe, IPS O.D. (Class) PVC Pipe, and HDPE Pipe. The 3800 is an economical alternative to harnessing of unrestrained repair type couplings.