Line Stopping is a method of producing a temporary isolation in a live main line, where some flow prevails and thus cannot be frozen, or a complete shutdown is not an option. There are numerous advantages of line stopping including the installation of a bypass so as to maintain the flow, thus reducing the need of a complete shut down or major disruption to services.
Line Stopping is widely used on most common pipeline materials such as Steel, Cast Iron, Ductile Iron, Copper, Stainless Steels, Plastics and Cement Asbestos. One or more bespoke fittings are either welded or bolted on to the pipeline, to which valves are fitted. The pipe is under pressure drilled as required, and then the Line Stopping equipment or Stopple is installed. In case of a bypass requirement during the installation, the water flow in the main line is stopped.
The major advantage of Line Stopping is little or no disruption during the operation. It also reduces the chances of harmful gas exertion. There is no drain or back filling time. It is perfect for isolating sections of ring mains. It can be applied to a wide range of liquids, gases and compressed air. Moreover, it is well-suited for fire protection, sprinkler systems and hydrants etc.
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