Abstract: An underground pipe repair device is for a joint between a service pipe and a branch pipe. The underground pipe repair device may include a T-shaped joint liner having a base portion extending laterally in the service pipe, and an arm portion extending vertically into the branch pipe, and a retention device embedded in the base portion adjacent an opening in the branch pipe. The underground pipe repair device may include an alignment device to be coupled to the retention device, and a service pipe liner extending in the service pipe and under the T-shaped joint liner and the alignment device. The alignment device extending vertically into the service pipe so that the service pipe liner has a radial bump about the opening in the branch pipe.

Abstract: An underground pipe repair device is for a joint between a service pipe and a branch pipe. The underground pipe repair device may include a first T-shaped joint liner having a base portion extending laterally in the service pipe, and an arm portion extending vertically into the branch pipe, and a second ring-shaped liner under the first T-shaped joint liner and aligned with an opening in the branch pipe. The underground pipe repair device may include an annular spacer aligned with the opening in the branch pipe and being between the first T-shaped joint liner and the second ring-shaped liner. The annular spacer may include a radial step, and the second ring-shaped liner may be coupled to the base portion of the first T-shaped joint liner to retain the annular spacer.