Adjustable proportional throttle-valve with feedback

Details Adjustable proportional throttle-valve with feedback Adjustable proportional throttle-valve with feedback

1991-10-23

1993-01-12

Michalsky, Gerald A.

Valves and valve actuation

Fluid actuated or retarded

Pilot or servo type motor

251 3003, 251 38, 251 44, F16K 31363

Patent

active

051783584

ABSTRACT:
The throttle-part of the valve comprises a two-way seat valve with a follow-up throttle valve (8), which is driven by a differential guide piston (12) and an edge control system (20). The guide piston is pressurized via a pressure-spring (16) in a pressure-spring compartment in the direction of the closed position of the edge control system. The drive is effected via a pilot line A which pressurizes or depressurizes the pressure-spring compartment (18) via a proportional directional control valve (6), while the position of the guide piston (12) is determined by an inductive displacement transducer.

REFERENCES:
patent: 2805038 (1957-09-01), Towler et al.
patent: 4662600 (1987-05-01), Schwelm
patent: 4724864 (1988-02-01), Schwelm

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