DEVICE TO INSTALL STOP VALVES INTO PIPELINE Russian patent published in 2014 - IPC F16K17/30 F16L55/136 

FIELD: construction.

SUBSTANCE: invention relates to valve industry and is designed to install an additional stop device into previously installed pipelines. The device for installation of stop valves into a pipeline comprises a pipe-shaped body (1), inside of which there is a stop valve (6). The external diameter of the body (1) in its front cylindrical part (3), when looking in direction of installation into the pipeline, is slightly less than the internal diameter of the pipeline (2). A stepped cone-shaped part (10) is connected to the front cylindrical part (3), narrowing towards the direction of installation into the pipeline, limited with a lug (12), to which a contour (7) adjoins for a connection part of a driving element. In the cone-shaped narrowing part (10) there is a slider (13) installed, made from stretching material and movable in axial direction, and its external diameter in the position adjoining the lug (12), is slightly less than the internal diameter of the pipeline (2), and which has a slot along the circumference, where an elastic clamping ring (15) is placed.

EFFECT: invention is aimed to simplify assembly and disassembly of a device with minimum application of efforts for its placement in a pipeline and fixation there, and also reduced wear due to movement of a sealing element without contact with pipeline walls.

7 cl, 2 dwg