FIELD: noise mufflers.
SUBSTANCE: invention relates to devices for reducing noise of control valves and regulators. A ball valve with a modal noise muffler for reducing noise contains: a valve case having a liquid inlet and a liquid outlet connected via a liquid flow channel; a control element located in the liquid flow channel, controlling a flow of liquid through the valve case; a perforated shield located inside the specified control element at a distance from the inner surface of the control element, forming an annular space between the perforated shield and the inner surface of the control element; and a set of chambers formed in the control element between the perforated shield and the inner surface of the control element by a set of walls located on the inner surface of the control element essentially perpendicular to the direction of the flow of liquid through the control element.
EFFECT: reduction in noise in liquid flowing through the ball valve.
14 cl, 2 dwg
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