Control Valve Study Material - Instrumentation Tools

Inherent vs Installed Control Valve Flow Characteristics

What is inherent characteristic of a valve ? The inherent characteristic of a valve is the characteristic published by the manufacturer,

Now let us consider a scenario where the pressure drop across the valve changes as the rate of flow through

First, let us imagine a control valve installed at the base of a dam, releasing water from the reservoir. Given

The purpose of a valve positioner is to ensure the mechanical valve’s position matches the command signal at all times.

The flow coefficient of a control valve (Cv) is a numerical value expressing the number of gallons per minute flow

When control valves operate between fully open and fully shut, they serve much the same purpose in process systems as

In Control Valve Sequencing, for example, both control valves received the same pneumatic signal from a common I/P (current-to-pressure) converter.

Another form of control valve sequencing is used to expand the operating range of flow control for some fluid beyond

Other applications for split-ranged control valves call for a form of valve sequencing where both valves are fully closed at

The first type of control valve sequencing is a mode where two valves serve to proportion a mixture of two