Unidirectional, fluid control valve

Details Unidirectional, fluid control valve Unidirectional, fluid control valve

1984-03-12

1986-02-18

Nilson, Robert G.

Fluid handling

Line condition change responsive valves

Direct response valves

1375122, 137514, 13751611, F16K 1502

Patent

active

045706662

ABSTRACT:
In the first-depicted embodiment, the valve is of the ported, plate-type, having a ported valve seat, stop plate, a buffer plate, and a pair of valving elements. Stop pins extending from the stop plate restrict the lift of one of the ported valving elements to a lift dimension in which the flow coefficient provided thereby diminishes at a linear rate. The other ported valving element, carried by the first to the restricted limit of travel thereof, is free to continue its lift, in a valving function then, through a like valving lift dimension in which the flow coefficient which it affords also diminishes at a linear rate. Springs, interposed between the just-mentioned other valving element, and the stop plate, bias the valving elements in closure of the ports in the valve seat. The buffer plate, however, is supported in a non-contacting, speed-apart disposition relative to the seat, the stop, and the valving elements, and in a loose, independent, and unrestrained disposition relative to the stop and, therefore, is freely engageable with the stop.

REFERENCES:
patent: 2186489 (1940-01-01), Kehler
patent: 3369563 (1968-02-01), Deminger
patent: 3703912 (1972-11-01), Bauer
patent: 3820561 (1974-06-01), Papst
patent: 3875962 (1975-04-01), Bauer
patent: 3999898 (1976-12-01), Chomczyk

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