Josher control valve

摘要

Control valve apparatus for controlling flow in a pipeline, which valve apparatus comprises a valve and cutter means, and which valve apparatus is such that it is able to be cut into the pipeline without having to stop the flow in the pipeline. The cutter means may have a cutting head which is rotateable to cut a section of the pipeline and which is able to accommodate the cut section of the pipeline. A plug or valve may then be introduced into the pipeline to block the flow (see Figs, not shown). IMAGE