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US 2007/0181190 A1Published application
Non-return valve
AssigneeHydac Filtertechnik GmbH
InventorVolkmar Klein
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AssigneeHydac Filtertechnik GmbH
InventorVolkmar Klein
Estimating the term…
The inventive non-return valve comprises a valve body (1) which defines an internal fluid through-opening (7) extending along the longitudinal axis (5) of the body, comprising a seat body (17) defining a valve seat (31) arranged in said through opening (7) and a closing body (35) which is axially displaceable in the through opening (7) oppositely to a closing force produced by a closing spring (45) between a closed position applied to the seat body (17) and an open position lifted from the valve seat (31) on the closing body (35), wherein the valve body (1) forms a guide along which the seat body (17) is axially displaceable in different adjusting positions corresponding to the desired preloads of the closing spring (45) and, consequently to the desired adjustments of the closing force quantity of said closing spring (45).
A non-return valve having a valve housing (1) which defines an interior fluid passage (7) extending along the longitudinal axis (5) of such housing, having a seat element (17) situated in the passage (7) and defining a valve seat (31), and having a detent element (35) which is movable axially for movement against the closing force of a closing spring (45) in the passage (7) between a detent position adjoining the seat element (17) and opening positions raised above the valve seat (31) on the seat element (17) [sic], characterized in that the valve housing (1) forms a guide along which the seat element (17) may be displaced axially into different adjustment positions which correspond to the desired pretensioning of the closing spring (45) and accordingly to desired adjustments of the magnitude of the closing force of the closing spring (45).
Dependencies are inferred from the claim text.