Automatic connecting valve for hydraulic systems

Pumps – With condition responsive pumped fluid control – Plural pump units with individual or relative control

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Details

137118, F04B 4900

Patent

active

043068405

ABSTRACT:
A differential pressure actuated valve is displaced from a spring-biased, stabilized position to a stabilized pump-changeover position in response to increasing pump pressure. The valve actuating pressure is varied in both directions of valve movement between the stabilized positions by variation of the restriction passage flow area through which the pressure differential is developed for actuating the valve.

REFERENCES:
patent: 3882678 (1975-05-01), Fassbender
patent: 4002027 (1977-01-01), Eley et al.
patent: 4116577 (1978-09-01), Lauck

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