Valve
AssigneeNeles Oy
InventorsJousi K. Pyotsia, Esko T. Yli-Koski
Life of this patent
Estimating the term…
Abstract
Valve which consists of a body (1) provided with a flow passage, of a closing member (2), such as, e.g., a flap, fitted in the flow passage (3) pivotably or turnably and having no passage opening, and, if necessary, of jointly operative sealing members (6) fitted between the closing member (2) and the valve body (1). In the flow passage (3) in the valve body (1), after the closing member (2), at the outlet side of the flow, one or several attenuation member or members (9) are fitted, which are placed one after the other at a distance from each other and from the closing member (2), which the closing member is in the closed position, and which reduce the cross-sectional area of the flow passage (3). The attenuation member or members (9) may be provided with holes or openings (12) passing through them.
Claims12
A valve comprising a body provided with a flow passage and a closing member movably mounted in said passage to be pivotable about pivot means between a first position wherein said member blocks flow through said passage and a second position wherein flow through said passage is permitted, sealing means for cooperating with said member when in said first position to seal said passage, said pivot means being disposed in said passage to thereby divide the flow passage between first and second segments, said closing member having a section which is disposed relative to said pivot means so as to pivot in a generally upstream direction when said closing member moves from said first toward said second position, said passage having a portion downstream of said section of said closing member and at least one attenuation member mounted in said downstream portion of said passage and out of flow impeding relation with the remainder of said flow passage.
Dependencies are inferred from the claim text.