Flow control valves for liquids

Details Flow control valves for liquids Flow control valves for liquids

1975-12-09

1977-08-09

Schwadron, Martin P.

Valves and valve actuation

Fluid actuated or retarded

Pilot or servo type motor

60 3928R, 137 47, F16K 31124

Patent

active

040405990

ABSTRACT:
A fluid flow control valve has a bore within which a control member is slidable in response to variations in a servo pressure signal. The control member is also rotatable and includes a relieved portion which co-operates with a control orifice to regulate said servo pressure signal. It is arranged that in a number of discrete rotational positions of the control member the control orifice is shut off to prevent sliding movement, whereby flow through the valve can be set to predetermined levels by rotation of the control element to these positions. In one rotational position all flow is shut off, independent of the sliding position of the control element.

REFERENCES:
patent: 2687273 (1954-08-01), Starkey
patent: 2879643 (1959-03-01), Stroh et al.
patent: 2934306 (1960-04-01), Evans et al.
patent: 3007514 (1961-11-01), Werfs
patent: 3015935 (1962-01-01), Evons
patent: 3130740 (1964-04-01), Donlon
patent: 3173468 (1965-03-01), McCombs, Jr.
patent: 3390522 (1968-07-01), Whitehead
patent: 3531936 (1968-10-01), Widell
patent: 3596669 (1971-08-01), Alberani

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