Basics of Gate Valves
The Gate valve is a linear actuating  valve used as flow isolater in a fluid pipeline.  As the name says the gate valve, a flat  circular or rectangular plate acts as…
Basics of Globe Valves
Globe valves consist of a movable disk-type element and a stationary ring seat in a generally spherical body. The valve stem moves a globe plug relative to the valve seat.…
Basics of Butterfly Valves
A butterfly valve is a valve which can be used for isolating or regulating flow. The closing mechanism takes the form of a disk. Operation is similar to that of…
Basics of Ball Valves
A ball valve is a form of quarter-turn valve which uses a hollow, perforated and pivoting ball (called a "floating ball") to control flow through it. It is open when the ball's hole is…
Basic Requirements of Control Valves Sizing
A control valve is a power operated device capable of modulating flow at varying degrees between minimal flow and full capacity in response to a signal from the controlling system.…
Control Valves Theory
The flow regulation  in a valve is accomplished  by the varying  resistance as the valve  is stroked, i.e. its effective cross sectional area is changed. As the fluid moves from…
PID Controller Gains Effect on Manipulated Variable
Observe the Effect of Proportional Gain Kp, Integral Gain Ki and Derivative Gain Kd values with respect to PID Controller Output response shown in below animation. The below graph shown is…
Advantages and Disadvantages of Squirrel Cage Induction motor
Squirrel Cage Induction Motor: Squireel cage induction motors are widely used in industries. Almost 70% of the industrial motors and drives comes under these category. In Squirrel cage induction motors, rotor windings wound in squirrel cage. These…
Advantages of Bundled Conductors in Transmission Lines
For transmission of more power for long distances to load centers Extra High Voltage (EHV) transmission is employed. Implementing Extra High Voltage has advantage of reduction in the copper losses…
Difference between Solid Conductor and Stranded Conductor
Difference between Solid Conductor and Stranded Conductor Solid Conductor: It consists of single piece of metal wire. It is cheap for manufacturing.Skin effect is higher in solid conductors as at…
