Abstract: The present disclosure provides a sealing plug assembly, a line stop assembly, and a yoke for stopping flow of a product in a pipe as well as methods of using the same. The sealing plug assembly, the line stop assembly, and the yoke include one or more fluid pathways. A benefit of the sealing plug assembly, the line stop assembly, and the yoke can be to remove product from an isolation zone of a stopped pipe through the one or more fluid pathways.

Abstract: A system and method recover process gas from a source volume at a source pressure to a destination volume at an equal or greater pressure. A regulation process receive the process gas from the source volume and steps down the pressure. Each regulation uses one or more stage each using a pressure control valve for pressure step down and a heat exchanger for reheating the process gas thereafter. A gas scrubber receives the process gas from the regulation stages and collecting liquid from the process gas. A compression process receives the process gas from the gas scrubber and steps up the intermediate pressure to a final pressure. The compression can use one or more compression stages, each having a compression cycle for pressure step up and a heat exchanger for cooling the process gas thereafter. A discharge vessel receives the process gas from the compression process and discharges the process gas at the final pressure to the destination volume.