All articles

Field Instrumentation

What is a pump?

A pump can be described as a device that can transfer or raise the...
Control Valve

What is a subsurface safety valve?

The chances of uncontrolled flow in a wellhead are really high, so a subsurface...
Control Valve

What is an emergency stop valve?

The emergency stop valve is a shut-off valve that would cut of the process...
Control Valve

What is a bellow seal valve?

Table of ContentsWhat are the features of a bellow seal valve?Why bellow sealed valves?How...
Control Valve

What is an automatic recirculating valve and where is it used?

The automatic recirculating valve is a type of control valve for the protection of...
Control Valve

What is a reversing valve?

A reversing valve can be seen in a heat pump, because of its ability...
Control Valve

What is a deluge valve and what is the need for a deluge system?

Table of ContentsWhat is a deluge system and why is it used?How does a...
Instrumentation

What is a surge tank?

A surge tank can be described as a storage reservoir, this device would be...
Instrumentation

What is a pressure surge in a pipeline and how to do the surge analysis?

What is a pressure surge or water hammer and what causes them? The pressure surge...
Control Valve

What is an expansion valve?

These valves are used to control the refrigerant flow in a refrigeration system. Expansion...
Electrical

What is a stepper motor?

The name stepper is used because the rotation of the motor is through the...
Electrical

What is a servo motor?

A servo motor is a variable speed drive and it is used in many...
1...117118119...202Page 118 of 202