Fluid handling – Line condition change responsive valves – Pilot or servo controlled
Patent
1975-04-17
1976-03-02
Klinksiek, Henry T.
Fluid handling
Line condition change responsive valves
Pilot or servo controlled
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
Hess J. Edward
Johnson Donald R.
Klinksiek Henry T.
Roch William C.
Sun Oil Company of Pennsylvania
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