Locked Open (LO) and Locked Closed (LC) Valves
In a valve, the abbreviation LO and LC are for locked open(LO) and locked close(LC) Valves respectively. These abbreviations have common use in plant documentation. … Read more
Control Valve
Control Valve articles on all types of valves used in industries, including ball, butterfly, globe, gate, Diaphragm, etc.
What is Partial Stroke Test?
A partial Stroke Test is done for On-Off valves which are used in critical services and do not operate for a longer period of time. … Read more
Introduction to Double Block and Bleed Valve System
The double block and bleed valves are also known by the short name “DBB valve”. Two ball valves could be integrated into a single body … Read more
Partial Stroke Testing Device (PSD) in SIS Final Control Element
Installation of a Partial Stroke Testing Device (PSD )in SIS Final Control Element for automated ON-OFF valve operation improves the Proof test requirement. Here, SIS is … Read more
What are Linear Control Valves & Rotary Control Valves?
A linear control valve & rotary control valve can be defined as a mechanical device that starts, stop and regulate the passage of liquids or … Read more
What is an Air Valve? Purpose, Types, Advantages
The excess air in a pipe can impede the fluid flow. Thus, the air in pipe cause slower flow, turbulence, and corrosion. To avoid all … Read more
Advantages and disadvantages of gate valves
We will discuss the advantages and disadvantages of the gate valve in this article. Gate valves are most suitable where we require uninterrupted circulation and … Read more
Self-actuated Temperature Regulator-Principle, types
A self-actuated temperature regulator decrease or increase the fluid flow rate according to the rise or fall of the temperature at the measuring point. Thus, … Read more
Impulse line – Purpose & Tapping Point Location
An impulse line conveys process pressure output accurately from the pipe tapping point to the transmitter. An Impulse line is a part of the process … Read more
Control Valve Positioner | Operating Principle & Its Types
A control valve positioner is a device that senses the signal from an instrument (controller) and the position of a valve stem. Its main function … Read more
