Tuyere stock

Abstract

°C into a furnace, the valve comprising (a) a valve body having a longitudinal axis and an inner wall defining a flow path for the gas along the axis, the flow path having a cross-sectional area perpendicular to the axis; (b) a trim assembly comprising multiple shutter elements and a drive assembly adapted to reversibly displace the multiple shutter elements through the inner wall of the valve body into the flow path in the plane of the cross-sectional area, the cross-sectional area of the flow path being concentrically reduced when the multiple shutter elements are displaced into the flow path.

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