Accumulator changing valve

Fluid handling – Self-proportioning or correlating systems – Self-proportioning flow systems

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Details

137115, 137118, G05D 1500

Patent

active

041301277

ABSTRACT:
A valve is disclosed for connecting a user port with a pressure port or a return port as required. A closure member which is acted upon by a pressure piston is shifted from a first into a second valve position. By disposing a throttle in the return port, a balanced pressure is achieved on all sides of the closure member during a valve position change process so that the valve changes from the first into the second position safely and rapidly.

REFERENCES:
patent: 3570519 (1971-03-01), Bianchetta
patent: 3692039 (1972-09-01), Ewald et al.
patent: 3834162 (1974-09-01), Keady
patent: 3886848 (1975-06-01), Budecker et al.
patent: 3915186 (1975-10-01), Thomas
patent: 3937243 (1976-02-01), Harkrader et al.
patent: 3939859 (1976-02-01), Veda et al.
patent: 3973580 (1976-08-01), Veda
patent: 4016895 (1977-04-01), Budecker

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