Control valve

Details Control valve Control valve

1993-06-11

1995-01-31

Nilson, Robert G.

Valves and valve actuation

Fluid actuated or retarded

Pilot or servo type motor

91376R, 251 31, 251 38, F16K 31124

Patent

active

053853288

ABSTRACT:
The present invention refers to a control valve provided with a valve closure member (5) for closing and opening a valve opening. The valve closure member (5) has attached thereto a piston (11), which is arranged such that it is movable within a housing (13), said piston (11) being adapted to be acted upon by the force of a spring (spring 27) in one direction and by a fluid pressure in the opposite direction. A property characterizing the present invention is that the length of the path of movement of the piston (11) can be adjusted with the aid of a positioning means (29, 73). In accordance with a preferred embodiment, the positioning means (29) consists of a rod (31), which is adapted to be axially moved in the direction of movement of the piston (11).

REFERENCES:
patent: 2615466 (1952-10-01), Garde
patent: 2758811 (1956-08-01), Peterson
patent: 3410518 (1968-11-01), Carsten
patent: 3584652 (1971-06-01), Huntington
patent: 4793589 (1988-12-01), Eldredge
patent: 4875502 (1989-10-01), Romano
patent: 5000220 (1991-03-01), Elck
Regelungstechnische Informationen, Herausgeber Samson Apparatebauag, Frankfurt am Main, Weismullerstrasse 3, Nr. 8 (undated).

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