Control valve drive

Fluid handling – Line condition change responsive valves – Pilot or servo controlled

Patent

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Details

F16K 1720

Patent

active

039411486

ABSTRACT:
A system for controlling a pneumatic rising stem valve by a stepping motor is disclosed. A pressure regulator is connected to the stepping motor so that the air pressure applied to the valve can be varied according to the signals applied to the stepping motor.

REFERENCES:
patent: 3794069 (1974-02-01), Gulick

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