Search Results for: control valve
- Control Valve
Valve stem packing – replacement procedure
What is valve stem packing? Valve stem packing is the process of tightening the valve gland follower with packing material…
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What is Supervisory control?
Introduction There are a lots of control sytems like cascade control ,feedback control,feedforward control,split controls etc used in the process…
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What is Partial Valve Stroke Testing?
Introduction Partial Valve Stroke Testing or PVST, is an emerging concept to automatically increase the performance of Safety Instrumented Systems.…
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What is Distributed Control System (DCS)?
Table of ContentsConcept of Distributed Control SystemComponents of DCSConfiguration of the Control StationAdvantages of DCS Concept of Distributed Control System…
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DIFFERENCE BETWEEN FEEDBACK AND FEEDFORWARD CONTROL LOOPS
INTRODUCTION There are so many control loops in the industries nowadays.In this session we are going to discuss about difference…
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Features of Plug valve
Plug valve is a rotary control valve which is used to control flow. Plug valves are simple and often economical.…
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What are motor operated valves?
Introduction The motor operated valves (MOV) is an important element of the plant and pipe system. These valves are generally…
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Basics of Needle valves
Small sizes of globe valves fitted with a finely tapered plug are known as needle valves. Needle valves are used to…
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Basics of Pinch valves
A pinch valve is a simplest valve design. It is a linear motion valve that is used to start, regulate and stop…
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what are ball valves?
Introduction A ball valve is a rotational motion valve .The ball consists of a ball shaped disk .this ball shape…
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