Flow control valve

Details Flow control valve Flow control valve

1980-05-05

1981-02-24

Schwadron, Martin P.

Fluid handling

Self-proportioning or correlating systems

Self-proportioning flow systems

1375145, 60418, G05D 1100

Patent

active

042521416

ABSTRACT:
The valve includes a control piston axially slidable in a cylindrical bore which controls the cross-sectional area of an orifice of a connection between the cylindrical bore communicating with a pressure port and a user port. The control piston is acted on by a spring and a pressure which is reduced relative to the pressure at the pressure port. A cushioning arrangement acting on the control piston avoids occurrence of pressure surges affecting the control piston behavior.

REFERENCES:
patent: 502252 (1893-07-01), Hanna
patent: 515578 (1894-02-01), Eynon
patent: 533953 (1895-02-01), Holly
patent: 3680587 (1972-08-01), Herscovici
patent: 4016895 (1977-04-01), Budecker
patent: 4051864 (1977-10-01), Iwatsuki
patent: 4084604 (1978-04-01), Budecker et al.
patent: 4130127 (1978-12-01), Budecker et al.

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