Abstract: A method and apparatus for repairing a pipeline. The apparatus includes a liner assembly made of resin absorbent material. The liner assembly is configured to be impregnated with a light-activated resin. The apparatus also includes a bladder assembly configured to expand to press the main liner member against the interior wall of the pipeline and a lighting assembly configured to provide light at the wavelength which initiates curing of the light-activated resin.

Abstract: A method and apparatus for repairing a pipeline. The apparatus includes a liner assembly made of resin absorbent material. The liner assembly is configured to be impregnated with a light-activated resin. The apparatus also includes a bladder assembly configured to expand to press the main liner member against the interior wall of the pipeline and a lighting assembly configured to provide light at the wavelength which initiates curing of the light-activated resin.

Abstract: An assembly and method for repairing a pipeline. The assembly may include a sleeve positioned between a bladder and a liner. The sleeve includes a first portion having a larger diameter than a second portion. The larger diameter at the first portion of the sleeve allows the sleeve to expand outward with less pressure. Upon the introduction of fluid pressure into the bladder, the bladder, sleeve, and liner expand radially outward at the first portion of the sleeve first. Then, as pressure inside the bladder increases, the remainder of the assembly expands radially outward toward the pipe in a serial fashion longitudinally away from the first portion. In this manner the user can control which area of the assembly is inflated and expanded first by positioning the first portion of the sleeve at the appropriate location.

Abstract: An assembly and method for repairing a pipeline. The assembly may include a sleeve positioned between a bladder and a liner. The sleeve includes a relief area having a reduced modulus of elasticity. The reduced modulus of elasticity at the relief area allows the sleeve to expand outward with less pressure. Upon the introduction of fluid pressure into the bladder, the bladder, sleeve, and liner expand outward at the relief area first. Then, as pressure inside the bladder increases, the remainder of the assembly is expanded. In this manner the user can control which area of the assembly is expanded first by positioning the relief area at the appropriate location. In another embodiment a semi-rigid member is wound around the outside of the liner in a helical configuration to provide a pathway for trapped air to escape during inflation of the bladder and curing of the liner.

Abstract: An assembly and method is provided for repairing a pipeline. The assembly includes a liner, a bladder positioned within the liner, and a light train positioned within the bladder. One or more light train supports, which may be support members or support layers, are configured to move the light train toward the axial center of the bladder when the bladder is inflated.

Abstract: A pinch valve configured to be combined with an inversion apparatus. An elongated component, such as a rope, cable, or light train, is able to pass through the lumen of the pinch valve during the positioning and curing of a repair assembly into an underground pipe system. A deformable member positioned within the housing is movable between a first position having a first internal diameter and a second position having a second internal diameter that is smaller than the first internal diameter. In the second position the deformable member is moved to constrict around the elongated component as the component passes through the valve. This helps prevent pressure from escaping through the pinch valve by decreasing the space between the deformable member and the elongated component. In this manner, the internal diameter of the pinch valve is able to conform to various diameters of elongated components passing through the valve in real time by moving the deformable member to create the desired internal diameter.

Abstract: A pinch valve configured to be combined with an inversion apparatus. An elongated component, such as a rope, cable, or light train, is able to pass through the lumen of the pinch valve during the positioning and curing of a repair assembly into an underground pipe system. A deformable member positioned within the housing is movable between a first position having a first internal diameter and a second position having a second internal diameter that is smaller than the first internal diameter. In the second position the deformable member is moved to constrict around the elongated component as the component passes through the valve. This helps prevent pressure from escaping through the pinch valve by decreasing the space between the deformable member and the elongated component. In this manner, the internal diameter of the pinch valve is able to conform to various diameters of elongated components passing through the valve in real time by moving the deformable member to create the desired internal diameter.

Abstract: A method and apparatus for repairing a pipeline. The apparatus includes a liner assembly made of resin absorbent material. The liner assembly is configured to be impregnated with a light-activated resin. The apparatus also includes a bladder assembly configured to expand to press the main liner member against the interior wall of the pipeline and a lighting assembly configured to provide light at the wavelength which initiates curing of the light-activated resin.