Abstract: A pipe liner connector suitable for connecting pipe sections that comprise a liner is described. The pipe liner connector comprise vents and/or venting grooves which act to balance the pressure between the micro-annulus, formed between the liner and the pipe sections, and the pipe bore formed when the pipe sections are connected together. The inclusion of these features helps prevent the collapse or the uncontrolled distortion of the pipe liner connector during pressure cycles in operating pipelines.

Abstract: The present invention relates to apparatus for use in venting pipelines that have a plastic lining such as these used for transporting hydrocarbon fluids. A pipeline assembly comprises a pipeline (2), a corrosion resistance liner (3), and a micro-annulus (4) located between said pipeline and liner. The pipeline assembly also comprises a venting means (5) adapted for fitment in or through the corrosion resistance liner (3), wherein the venting means (5) allows gas to flow from the micro-annulus into the center of the pipeline assembly but not in the opposing direction.