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AssigneeRobert Bosch GmbH
InventorsWalter Bartussek, Joerg Heusinkveld, Hubert Hueber, Werner Rittler, Juergen Haecker, Harald Ott, Harald Aicher
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The invention relates to a check valve with a tubular valve housing in which a valve ball is received. To make a large flow cross section available and to prevent closure by the valve ball when the check valve is fully open, a perforated disk is press-fitted between longitudinally extending guide ribs of the valve housing and a circumferential wall of the valve housing there is an interstice as an outflow opening, which is not closed even the valve ball contacts the perforated disk. The valve housing is made by stamping, in which the guide ribs and a valve seat are made in one operation and are thereby aligned exactly with one another. In this way, a small radial play of the valve ball can be realized.
A check valve comprising a valve housing (12) having a through bore that includes a downstream end, the through bore includes a valve seat and guide ribs extending longitudinally that movably guide a valve closing body, received in the valve housing, the closing body is aligned with the valve seat, a retaining element which is mounted in the valve housing, the retaining element keeps the valve closing body between the retaining element and the valve seat, the retaining element (26) is mounted on the guide ribs (20), there is an interstice (38) between the retaining element (26) and an inside of a circumferential wall (22) of the valve housing (12), and on the downstream end of the through bore (16) the retaining element (26) is pressed in an axial direction into the valve housing (12).
Dependencies are inferred from the claim text.