A method of installing a liner assembly for pipeline repair or reinforcement includes: pulling a prepared liner assembly into position in the pipeline, the liner assembly including an outer tubular liner and an inner inflatable bladder positioned longitudinally within the tubular liner, the tubular liner being wetted with a curable compound; introducing fluid into the inflatable bladder so that the inflatable bladder expands to bring the tubular liner into firm contact with an interior surface of the pipeline; flowing the fluid continuously through the bladder and discharging the fluid into the pipeline, while maintaining the liner assembly in an inflated condition for a time period sufficient for the tubular liner to cure; and deflating the inflatable bladder and retrieving at least a portion of the liner assembly from the pipeline.

A lining tube for reconditioning a defective sewer pipe has an inner film tube, around which is disposed a radially expandable layer of fiber material that is impregnated with a curable reactive resin. The inner film tube has a connecting section that extends in longitudinal direction thereof and connects two circumferential portions of the inner film tube that run parallel to one another to give an inner film tube which is continuous over its circumference and has a defined nominal diameter. The connecting section has an intended fracture site that extends along the inner film tube and can be parted by introducing a pressure medium into the inner film tube in circumferential direction, in order to expand the inner film tube and the layer of fiber material disposed thereon radially beyond the nominal diameter. There is also described a method of producing and of installing such a lining tube.

An apparatus and method is provided for repairing an underground structure such as a pipe or manhole. The apparatus includes a liner assembly made of resin absorbent material. Some embodiments may further include a bladder assembly to help position the liner and press the liner against the walls of the underground structure. A sealing member is positioned in the underground structure. In some embodiments the sealing member is a separate member made from a compressible material, an absorbent material, or a hydrophilic or hydrophobic material. In other embodiments the sealing member is a portion of the liner assembly. The sealing member includes one or more channels adapted to receive a semi-liquid such as a hydrophilic or hydrophobic paste or grout. The semi-liquid is capable of swelling in response to being exposed to another liquid, such as water, and forms a seal between the liner assembly and the host pipe/manhole.

A method is provided for the installation of varied sewer rehabilitation lining materials within an existing sewer while conveying sewage flow through an internal bypass contained on a sled that applies the rehabilitation materials, thus eliminating the need for an expensive, intrusive above grade external bypass. The apparatus is compatible with the various rehabilitation materials, technologies and methodologies currently available in the industry. The method and apparatus can be utilized to restore the original structural integrity of a sewer pipe or to provide a corrosion barrier. Multiple and varied rehabilitation materials (including but not limited to epoxy, geopolymer, mortar, cement, etc.) can be applied using the same apparatus. The apparatus can also be utilized to clean and televise the sewer prior to and during the rehabilitation process.

A pipe lining having at least two material layers, a first elastomeric layer spray applied directly to the inside of a pipe which acts as a hydrophobic, ductile membrane, and a second rigid layer is spray applied to the first layer prior to complete curing of the first layer. One or more additional layers may be applied to the second layer to provide additional abrasion, erosion or chemical resistance to the second layer. An intermediate reinforcing layer may be disposed between the first and second layers. The first layer cures into a closed cell elastomeric foam, such that stress and other forces are not passed from the pipe to the rigid second layer.

The present invention is an improved method and assembly for repairing a pipe or the junction of two pipes, such as sewer pipes. The assembly includes a launcher device having a launcher device body, a launcher device opening disposed on the launcher device body, and a main bladder substantially surrounding the launcher device body. The main bladder includes an opening that substantially aligns with the launcher device opening. The assembly further includes an absorbent liner and a lateral bladder having a tubular lateral bladder body portion and a flange portion. The flange portion of the lateral bladder is attached to the exterior of the launcher device body. A method of using the assembly includes impregnating the liner with resinous material; inserting at least a portion of the liner into the lateral bladder; inflating the bladders; pressing the liner against the pipe; and allowing the resinous material to cure and harden.

Provided are an apparatus for forming non-excavation water and sewage pipe lining for rehabilitation using a textile grid reinforcement material and mortar lining, which allows a textile grid reinforcement material to be continuously disposed and mortar lining to be formed thereon when an old water and sewage pipe is rehabilitated by forming mortar lining in the old water and sewage pipe to fundamentally suppress fine cracks generated on the coated mortar lining, allows the textile grid reinforcement material, to be applied so as to solve a problem of corrosion of the reinforcement material generated when a conventional reinforcing bar or a wire mesh is applied, and in comparison to a conventional method of forming lining of only mortar, allows the textile grid reinforcement material to be applied to reduce a thickness of mortar lining and to perform continuous construction so as to perform economical construction, and a method thereof.

A method and apparatus for repairing a pipe system including a main pipe extending between a first and second manhole and one or more lateral pipes extending from the main pipe is provided. Aspects of the invention include the use of a main liner member having a plurality of lateral liner tubes in fluid connection and extending from the main liner member. The main liner member is used to line a main pipe, while the multiple lateral liner tubes extend into separate lateral pipes extending in various orientations from the main pipe. This method and apparatus provides for a single assembly to be able to line multiple pipes, which reduces time and cost for pipe repair.

An installation device for installing a branch liner in a branch point of a pipeline is disclosed. The device has a body with an inlet defined therein for fluids and a turning knob is rotatable relative to the body. The turning knob is attached to a first shaft and the opposite end of the first shaft is attached to a first barrel. The device further comprises a second barrel and a second shaft attached between said barrels. The device further comprises a duct extending between the body and the first barrel forming a passage for fluids from the inlet of the body to an area between said first barrel and said second barrel.

An installation device for installing a branch liner in a branch point of a pipeline is disclosed. The device has a body with an inlet defined therein for fluids and a turning knob is rotatable relative to the body. The turning knob is attached to a first shaft and the opposite end of the first shaft is attached to a first barrel. The device further comprises a second barrel and a second shaft attached between said barrels. The device further comprises a duct extending between the body and the first barrel forming a passage for fluids from the inlet of the body to an area between said first barrel and said second barrel.