Valve Positioner Archives - Instrumentation Tools

How Valve Positioners act as Cascade Control Systems in a Loop?

S Bharadwaj ReddyFebruary 29, 2020July 16, 2020

Explain how all valve positioners essentially act as cascade control systems in a loop, and why valve positioners generally improve control quality as a result. Valve Positioners Furthermore, examine this...

How to Choose a Control Valve?

S Bharadwaj ReddyJanuary 17, 2020January 20, 2020

When choosing a control valve for a process, there are many things that must be considered, including the valve’s flow characteristic, its size, noise, the potential for cavitation or flashing...

Basic Parts of Control Valves

S Bharadwaj ReddyOctober 11, 2019July 19, 2020

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 ReddyJuly 10, 2018March 21, 2019

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 ReddyMarch 5, 2018May 4, 2020

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 ReddyMarch 1, 2018June 29, 2019

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 ReddyApril 18, 2016March 21, 2019

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 ReddyOctober 26, 2015February 17, 2019

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...

Inst Tools

Tag: Valve Positioner