FIELD: machine building.
SUBSTANCE: proposed invention describes a coaxial valve (10) comprising a casing (11) with an inlet (12) and at least one outlet (14) for the medium (15) passed through the coaxial valve (10). A tubular shut-off member is installed in the valve casing (11) and can travel in its longitudinal direction, it interacts with the inlet (12) and the outlet (14) so that the medium (15) passes through the tubular shut-off member when the coaxial valve (10) is open. At least one valve seat present inside the valve casing has a supporting surface, the tubular shut-off member interacts with the supporting surface of the valve seat in one of its extreme axial positions closing the coaxial valve (10). A control device provides for travelling of the tubular shut-off member between its extreme positions. The supporting surface of the valve seat is formed on a replaceable sealing element (22) installed in the valve casing (11) hole (19) passing essentially across the longitudinal direction.
EFFECT: improved design.
21 cl, 5 dwg
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