The devices for launching and receiving of cleaning and diagnostic equipment for oil pipelines with nominal bore from DN 100 to DN 1200 inclusive and nominal pressure up to 16 MPa are designed for launching into the oil pipeline and receiving from it in-line equipment: flaw detectors, cleaning pigs and other in-line equipment in the flow of pumped product. The chamber represents two cylindrical bodies, one of which has a diameter equal to the diameter of the main oil pipeline, the other - of a larger diameter, which are connected with each other by a transition.
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