Development of plugs for pipe-in-pipe construction method.
六菱ゴム
Development of PIP Method Plugs In the pipe-in-pipe (PIP) method, a non-excavation renewal technique for aging existing pipes, there has been a recent demand for safety measures that involve double sealing using two valves instead of a single closure with one existing valve during pipe renewal work. The "PIP Plug Method" developed by Rokubishi Rubber enables double sealing (existing valve + closure plug) by installing a closure plug on the inner surface of the pipe, ensuring the safety of workers. ◆ Construction Achievements ◆ - Tokyo Waterworks Bureau, Wadahori Water Supply Station - Piping: Ductile cast iron pipe 1500A - Pressure resistance: 0.75MPa - Year of construction: July 2017 - Achieved sizes: 1000 to 1800A
