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Basic Parts of Control Valves

S Bharadwaj Reddy
A valve is a mechanical device that controls the flow of fluid and pressure within a system or process. A valve controls system or process fluid flow and pressure by...

Electro Pneumatic Valve Positioner Schematic & Principle

S Bharadwaj Reddy
Electro Pneumatic valve Positioner is used to control the valve stem position from open to close position or vice versa. A simple design and concept equals a simple operation of...

Electronic Valve positioners

S Bharadwaj Reddy
The purpose of a valve positioner is to ensure the mechanical valve’s position matches the command signal at all times. Thus, a valve positioner is actually a closed-loop control system...

Control Valve Positioners

S Bharadwaj Reddy
The reason why a pneumatic control valve’s stem position corresponds linearly to the amount of air pressure applied to the actuator is because mechanical springs tend to follow Hooke’s Law,...

Control Valve Positioner Working Principle

S Bharadwaj Reddy
A Control Valve Positioner is a device used to increase or decrease the air load pressure driving the actuator until the valve’s stem reaches a “POSITION” balanced to the output SIGNAL from...

Common Terms Used in Control Valves

S Bharadwaj Reddy
In application of control valve, many terminologies are used and some Common Terms Used in Control Valves are actuator, trim, bonnet, bench set etc. Here we introduce some of these...

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