G771K201A Series Servo Valves

• 2-stage flow control Mechanical Feedback (MFB) Servo Valve
• Low friction, double nozzle pilot stage technology provide high dynamics, high resolution and low hysteresis
• High spool driving forces and rugged design ensure long-life operation
• Small body size
• Instrinsically-safe version available for applications requiring products certified for potentially hazardous environments

The G77X/77XSeries flow control servo valves are throttlevalves for 3 and preferably 4-way applications. They

area high performance,2-stage design that covers the rangeof rated flows from 4 to 57 l/min (l to 15 gpm) at 210

bar(3000 psi) valve pressure drop per spool land.

G771K201A

The output stage of the valve is a closed center, four-waysliding spool. The pilot stage is a symmetrical double-nozzleand

flapper, driven by a double air gap, dry torque motor.Mechanical feedback ofspool position is provided by acantilevered spring.The

valve design is simple and ruggedfor dependable, long life operation.
These valves are suitable for electrohydraulic position,speed,pressure or force control systems with high dynamicresponse

requirements.The G77X/77X is ideally suited forapplications where superior dynamics are a must.
Intrinsically safe valve versions are available for use inapplications with potentially hazardous environments.Specific models are

certified to FM, ATEX.CSA. Tl5 andECEx standards.