Control Valve Basics - Sizing & Selection PDF Download
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Author: A. Bhatia
Publisher: CreateSpace
ISBN: 9781502841070
Category : Technology & Engineering
Languages : en
Pages : 142
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Book Description
Control valves are imperative elements in any system where fluid flow must be monitored and manipulated. A complete control valve is made of the valve itself, an actuator, and, if necessary, a valve control device. The actuator is what provides the required force to cause the closing part of the valve to move and the valve control devices keep the valves in the proper operating conditions; they can ensure appropriate position, interpret signals, and manipulate responses.Selection of the proper valve involves a thorough knowledge of the process for which it will be used. When implementing a control valve into a process, one must consider not only the appropriate type of valve and its material of construction, but also the correct sizing to ensure it performs its designated task without any adverse occurrences in the system.This 4-hour quick book provides an overview of control valve with emphasis on the sizing and selection. This course is for mechanical, instrumentation and process engineers involved in sizing, selecting and applying process control valves. No specific prerequisite training or experience is required.Learning ObjectiveAt the conclusion of this course, the reader will:• Differentiate between various types of valves and the benefits of each;• Understand the operation of control valve in a control loop;• Understand how to evaluate and apply actuators and positioners for specific applications;• Understand the basic hydraulics and the relationship between the Cv, flow rate and pressure drop;• Understand how to size valves for any flow condition likely to be found in a process plant;• Understand how to select the proper valve characteristic for a given process;• Understand how the installed characteristics can match closely to the inherent characteristics;• Understand the methods to address system performance issues such as cavitation, flashing and chocked conditions;• Understand the factors influencing the selection of control valves.
Author: A. Bhatia
Publisher: CreateSpace
ISBN: 9781502841070
Category : Technology & Engineering
Languages : en
Pages : 142
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Book Description
Control valves are imperative elements in any system where fluid flow must be monitored and manipulated. A complete control valve is made of the valve itself, an actuator, and, if necessary, a valve control device. The actuator is what provides the required force to cause the closing part of the valve to move and the valve control devices keep the valves in the proper operating conditions; they can ensure appropriate position, interpret signals, and manipulate responses.Selection of the proper valve involves a thorough knowledge of the process for which it will be used. When implementing a control valve into a process, one must consider not only the appropriate type of valve and its material of construction, but also the correct sizing to ensure it performs its designated task without any adverse occurrences in the system.This 4-hour quick book provides an overview of control valve with emphasis on the sizing and selection. This course is for mechanical, instrumentation and process engineers involved in sizing, selecting and applying process control valves. No specific prerequisite training or experience is required.Learning ObjectiveAt the conclusion of this course, the reader will:• Differentiate between various types of valves and the benefits of each;• Understand the operation of control valve in a control loop;• Understand how to evaluate and apply actuators and positioners for specific applications;• Understand the basic hydraulics and the relationship between the Cv, flow rate and pressure drop;• Understand how to size valves for any flow condition likely to be found in a process plant;• Understand how to select the proper valve characteristic for a given process;• Understand how the installed characteristics can match closely to the inherent characteristics;• Understand the methods to address system performance issues such as cavitation, flashing and chocked conditions;• Understand the factors influencing the selection of control valves.
Author: Les Driskell
Publisher:
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 528
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Book Description
Author: Dave Macdonald
Publisher:
ISBN:
Category : Process control
Languages : en
Pages : 302
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Book Description
Author: Peter Smith
Publisher: Elsevier
ISBN: 0080481582
Category : Science
Languages : en
Pages : 414
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Book Description
Valves are the components in a fluid flow or pressure system that regulate either the flow or the pressure of the fluid. They are used extensively in the process industries, especially petrochemical. Though there are only four basic types of valves, there is an enormous number of different kinds of valves within each category, each one used for a specific purpose. No other book on the market analyzes the use, construction, and selection of valves in such a comprehensive manner. Covers new environmentally-conscious equipment and practices, the most important hot-button issue in the petrochemical industry today Details new generations of valves for offshore projects, the oil industry's fastest-growing segment Includes numerous new products that have never before been written about in the mainstream literature
Author: Ronald C. Merrick
Publisher: Springer
ISBN:
Category : Juvenile Nonfiction
Languages : en
Pages : 520
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Book Description
Today, people who specify or select valves spend over two-thirds of their time researching literature for information on valve sizing, availability, materials, and standards. This is nonproductive time. Unfortunately, most companies do not have the luxury of a team of experts with the necessary experience and education in all of the different fields that apply to valves. The next best alternative is to understand what valves are and all the things they can do. By definition, valves are devices that stop, start, mix, or change the direction and/or magnitude of the fluid flow, pressure, or its tempera ture. As a specifier or selector you will have to determine whether the valve is going to be used for flow control, throttling, or for on-off service. Then you will have to determine the cycle life or frequency of their operation. You will discover that valves are classified into three categories: on-off valves, control or regulator valves, and fixed valves such as orifice plate, nozzle, duckbill, rupture disk, blind valve, etc. These valves represent approximately thirty different design configurations. It has been said that if cost and delivery were no problem, anyone of the seven basic valve styles could do the job of any other one. But cost and delivery are very important factors in the real world. So you have to be able to distinguish among these seven styles: ball, butterfly, gate, globe, pinch/ diaphragm, plug, and poppet valves.
Author: C. E. Normand
Publisher:
ISBN:
Category : Gas flow
Languages : en
Pages : 84
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Book Description
Author: Hans D. Baumann
Publisher:
ISBN: 9781556176401
Category : Technology & Engineering
Languages : en
Pages : 0
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Book Description
This new edition of the ISA best-seller contains new material on valve sizing, smart (digital) valve positioners, field-based architecture, network system technology, and control loop performance evaluation. The author, a holder of 118 patents in control valve technology, shares his expertise with engineers faced with designing control loops and selecting final control elements. Written with the user in mind, the text avoids scientific wording and gives shortcuts through complex sizing and noise calculation formulas. It gives practical advice on how to apply control valves for safety, reduced energy costs, and easy maintenance. Contents: What is a Control Valve and How Does it Affect My Control Loop? Why Not Use a Speed-Controlled Pump? What Valve Type Shall I Choose? Valve Sizing Made Easy Sizing and Selection-Let the Computer Do it All!Why Most People Choose 'Equal Percentage' As a Flow Characteristic Valve Positioners The Mystery of Line Pressure Produced Valve Stem Forces, or Selecting the Correct Actuator Size How to Install a Control Valve When Do I Need to 'Hard Face' the Valve Trim and Other Questions Concerning Valve Materials Concern for the Environment Valves for Sanitary or Aseptic Service Twelve Commandments: What You Shall Not Do! Electric Versus Pneumatic Actuators Saving Energy The Bus System to the Rescue, or What the Future May Bring.
Author:
Publisher:
ISBN: 9780578134345
Category :
Languages : en
Pages :
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Book Description
In this book, the author shares his expertise gained over the last 35 years of applying and selecting control valves for a broad range of applications. The material presented is based on the content of control valve application, selection and training seminars he has presented to a variety of control valve users. Topics include: *How to properly size and select a control valve *Selecting the right valve flow characteristic to match the process *Control valve installed characteristics and installed gain *How analysis of installed gain can aid in proper control valve selection *Behavior of both gas flow and liquid flow in control valves, including noise reduction methods *Prediction and reduction of cavitation damage in liquid applications *Impact of the control valve on undesired process variability *Valve performance recommendations
Author: Mohammad A. Malek
Publisher: McGraw Hill Professional
ISBN: 0071589066
Category : Technology & Engineering
Languages : en
Pages : 494
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Book Description
Within the boiler, piping and pressure vessel industry, pressure relief devices are considered one of the most important safety components. These Devices are literally the last line of defense against catastrophic failure or even lose of life. Written in plain language, this fifth book in the ASME Simplified series addresses the various codes and recommended standards of practice for the maintenance and continued operations of pressure relief valves as specified by the American Society of Mechanical Engineers and the American Petroleum Institute. Covered in this book are: preventive maintenance procedures, methods for evaluation of mechanical components and accepted methods for cleaning, adjusting and lubricating various components to assure continued operation and speed performance as well as procedures for recording and evaluating these items.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
