Effect of Differential Pressure on Control Valve Lift
The air fed into the diaphragm chamber is the control signal from the pneumatic controller. The most widely used signal
Control Valves
Get the Control Valve Study Material & training on all types of valves used in industries which include ball, butterfly, globe, gate, Diaphragm, etc.
Pneumatic Control Valve Actuators
The operation of a control valve involves positioning its movable part (the plug, ball or vane) relative to the stationary
Two Solenoid Valves Working Principle
A solenoid valve is an electro-mechanical device in which the solenoid uses an electric current to generate a magnetic field
How to Select Control Valve Failure Mode
Valve fail mode may be shown in instrument diagrams by either an arrow pointing in the direction of failure (assuming
Types of Control Valve Trim
What is the Trim? The internal parts of the valve body, stem, seating material, package, disc, plug, back rings, etc.,
Types of Control Valves
Control valves are available in different types and shapes. They can be classified in different ways; based on: (a) action,
Control Valve Fail Safe Action
There are two primary system considerations centering around an emergency operational situation for control valves. Control Valve Fail Safe Action
Over Pressure cases for Pressure Relief Valve Sizing
Separator vessels, storage tanks, heat exchangers, columns and certain piping segments etc. are designed to handle certain operating pressure. However
Single Acting Vs Double Acting Actuators
There are basically two types of actuators : single action and double action. Single action is a control valve that
Difference between Quick Opening, Linear & Equal Percentage Control Valve characteristics
Each valve has a flow characteristic, which describes the relationship between the flow rate and valve travel. As a valve