Weld on insert valve

Abstract

Embodiments of systems and methods for installing a single valve assembly into in-service pipelines are presented using conventional hot tap technology. In one embodiment, the single valve assembly may comprise a removable cartridge assembly that comprises a wedge assembly that is rotated from an open position to a closed position and movable from a first unexpanded position to a second compressed position that sealingly engages one or more sealing elements to the valve body or housing to prevent fluid flow in the pipeline. The cartridge assembly is configured to be removed from the valve body for repair, maintenance, or replacement without additional line stops or interruptions to the in-service pipeline.

Dependencies are inferred from the claim text.