Quantity control valve for controlling the quantity of a pressur

Valves and valve actuation – Fluid actuated or retarded – Pilot or servo type motor

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Details

251133, F16K 3104

Patent

active

042391792

ABSTRACT:
In a quantity control valve for controlling the quantity of a pressure medium, the valve spindle being axially movably guided in a bush fixedly disposed in a housing and coacting with a nut included in the gear train, the valve spindle also being connected to a position piston slidably adjustable within a sleeve having a control opening, the sleeve being rigidly attached to a valve closure, a compression spring bearing on one side against the housing and on the other side against the valve closure, the valve closure being stepped within the range of its valve seat in defining an annular chamber, a radial connection leading to a central conduit in the valve closure and opening out into a chamber receiving a position piston, a non-return valve in the duct communicating with the control opening, and a pressure medium supply duct connected to the annular chamber about the valve seat.

REFERENCES:
patent: 1630212 (1927-05-01), Overton
patent: 2974679 (1961-03-01), Heller
patent: 3080952 (1963-03-01), Carlstedt
patent: 3405906 (1968-10-01), Keller
patent: 3908959 (1975-09-01), Fichtner

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