difference between valve and servo valve

A servo valve is a valve which is operated by an electrical actuator called a servo. There are lots of ways to operate a valve they include

1. Manually
2. Servos
3. Pilot operators
4. Hydraulic operators ,,,

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You can classify these two on the basis of Control system. Servo valve is closed loop control valve which is electricaly controlled & Mechanically operated, while a simple valve is Mechanical only.

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