Non-return valve

Details Non-return valve Non-return valve

2005-02-04

2008-12-16

Rivell, John (Department: 3753)

Fluid handling

Line condition change responsive valves

Direct response valves

C251S359000, C251S360000, C137S524000

Reexamination Certificate

active

07464723

ABSTRACT:
A non-return valve includes a valve body (1) which defines an internal fluid through-opening (7) extending along the longitudinal axis (5) of the body. A seat body (17) defines a valve seat (31) arranged in the through opening (7). A closing body (35) 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). 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 the closing spring (45).

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