Valves

Purpose and Scope: This procedure provides a thorough explanation of how to calibrate a motorized control valve in the process area using standards. Tools Required for Motorized Control Valve Calibration: Safety Basic Safety and General Consideration While Executing Calibration Process in process industries Calibration Setup How to Calibrate Motorized Operated Valve? Calibration Procedure Recording Calibration …

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What is the spool valve? Various configurations of Spool valves Construction of Spool Valve Closed Centre Open Centre Tandem Centre Float Centre Typical working of a spool valve Spool:  Valve Body:  Ports:  Control Mechanism:  Actuation:  Function:  Application of Spool valve:  Hydraulic Systems:  Spool valves are commonly used in Industrial, & mobile hydraulic machinery, & in …

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What are the factors that affect the performance of a control valve? Control valve performance is affected by several factors as shown below. Flow Characteristics:  Valve Sizing:  Valve Type:  Valve Trim:  The design and configuration of the valve trim, including the size and shape of the plug, seat, and other internal components, can affect the …

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Control Valve Parts of a Control Valve Control Valve Positioner Control Valve Troubleshooting Control Valve Maintenance, Calibration and Stroke Checking Control Valve Designing and Sizing  Control Valve – Interview Question and Answers

Types of Valves Function of Different Type Valves Relief and Safety Valves Instrument Manifold Valve  Solenoid Valves

What is a Control Valve? What is a Shut-Off Valve? Differentiate between Control Valve, & Shut-Off Valve Aspect Control Valve Shut-Off Valve Abbreviation  CV, in short, it can be LV, FV, PV XV Primary Purpose Maintain desired conditions within a system Isolate sections for maintenance or safety Function  Controls, & Regulates the flow w.r.t process …

Explain the difference between a Control Valve and a Shut-Off Valve and give an example of when you would use each Read More »

What is fail open and fail close valve? Terms like “Fail-Open” and “Fail-Close” are used to describe how valves behave under specific conditions, especially when there is a loss of power or control. In industrial processes, automation, and safety systems, these phrases are frequently used. What is FO and FC valve? Definitions Fail Open (FO) …

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What is the principle of safety valve? What is the construction of safety valve in boiler? The safety valve is composed mostly of three components: a nozzle, disc, and spring. Through the nozzle, pressurised steam enters the valve and is then threaded to the boiler. The disc serves as the nozzle’s lid, opening or shutting …

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Servo Valves Classification of Servo valves  Proportional Control Valve  Comparison between Proportional Valves and Servo Valves  Proportional Valve Servo valve Used in Open Loop Control System Used in Closed Loop Control System Cheaper than Servo valves Price is high compared to  Proportional valves Requires  maximum power of about 50W Requires very less power less than …

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What is control valve hunting? What causes a valve to hunt? Control loop issues Sizing of control valves Control valve positioner Stiction in valve stroke Defective hardware How do you stop valve hunting? Analysis and diagnosis of hunting Control valve maintenance procedures If the control valve became stuck while it was being operated, correct the …

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