Control Valve Capacity Test Procedures PDF Download
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Author: ANSI/ISA Staff
Publisher: Instrumentation Systems &
ISBN: 9781556176210
Category : Technology & Engineering
Languages : en
Pages :
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Book Description
Provides a test procedure for obtaining the following factors for sizing control valves: valve flow coefficient (Cv); liquid pressure recovery factors (Fl and Flp); Reynolds Number factor (Fr); liquid critical pressure ratio factor (Ff); piping geometry factor (Fp); & pressure drop ratio factors (Xt & Xtp). The standard is intended for control valves used in flow control of process fluids & is not intended to apply to fluid power components as defined in the National Fluid Power Association Standard NFPA T.3.5.28-1977.
Author: ANSI/ISA Staff
Publisher: Instrumentation Systems &
ISBN: 9781556176210
Category : Technology & Engineering
Languages : en
Pages :
Get Book Here
Book Description
Provides a test procedure for obtaining the following factors for sizing control valves: valve flow coefficient (Cv); liquid pressure recovery factors (Fl and Flp); Reynolds Number factor (Fr); liquid critical pressure ratio factor (Ff); piping geometry factor (Fp); & pressure drop ratio factors (Xt & Xtp). The standard is intended for control valves used in flow control of process fluids & is not intended to apply to fluid power components as defined in the National Fluid Power Association Standard NFPA T.3.5.28-1977.
Author:
Publisher: Isa
ISBN: 9780876645109
Category : Technology & Engineering
Languages : en
Pages : 18
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Book Description
Author: International Society of Automation
Publisher:
ISBN: 9781936007110
Category : Valves
Languages : en
Pages : 58
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Book Description
Author: Instrument Society of America
Publisher:
ISBN:
Category : Valves
Languages : en
Pages : 15
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Book Description
Author:
Publisher:
ISBN: 9781556171208
Category : Valves
Languages : en
Pages : 19
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Book Description
Author: Bela G. Liptak
Publisher: CRC Press
ISBN: 1420064002
Category : Technology & Engineering
Languages : en
Pages : 2460
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Book Description
The latest update to Bela Liptak's acclaimed "bible" of instrument engineering is now available. Retaining the format that made the previous editions bestsellers in their own right, the fourth edition of Process Control and Optimization continues the tradition of providing quick and easy access to highly practical information. The authors are practicing engineers, not theoretical people from academia, and their from-the-trenches advice has been repeatedly tested in real-life applications. Expanded coverage includes descriptions of overseas manufacturer's products and concepts, model-based optimization in control theory, new major inventions and innovations in control valves, and a full chapter devoted to safety. With more than 2000 graphs, figures, and tables, this all-inclusive encyclopedic volume replaces an entire library with one authoritative reference. The fourth edition brings the content of the previous editions completely up to date, incorporates the developments of the last decade, and broadens the horizons of the work from an American to a global perspective. Béla G. Lipták speaks on Post-Oil Energy Technology on the AT&T Tech Channel.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Book Description
Author: CTTC C1, Hydraulic Systems
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Book Description
This SAE Standard applies to hydraulic directional control valves as applied to self-propelled work machines referenced in SAE J1116. It describes a laboratory test procedure for evaluating: aFlow versus pressure drop bLeakage rate cOperating effort dMetering characteristics versus spool travel, pilot pressure, or electrical current eRelief valve characteristicsThe document applies to single and multiple section hydraulic directional control valves.This document illustrates axial, manually operated valves although the test procedure is applicable to other input forms such as rotary actuation, electric current, hydraulic or pneumatic pressure.NOTEPerformance characteristics such as metering hysteresis or dynamic response may have a significant effect on some of these tests. In hydraulic fluid power systems, power is transmitted and controlled through a liquid under pressure within an enclosed circuit. The hydraulic fluid power control valve is used to direct and control the fluid in the circuit to achieve the desired functions and flow of the fluid.The pressure drop, leakage rate, operating effort, metering characteristics and relief valve characteristics are indications of the ability of the control valve to perform the desired functions.The test procedure has been a recommended practice since 1956, last revised in 1975 and a five year review was started in 1982. Since several documents have been written which describe certain tests in more detail, they have been incorporated into this procedure. Also, the wording has been revised to expand the scope of the procedure to include other input forms in addition to direct manual operation.After a number of rewrites and input from manufacturers and end users, the revised test procedure was balloted in ORMTC SC4 on July 16, 1987, with fifteen approvals, one disapproval, and seven no replies. The subcommittee also recommended to upgrade the document to a standard and to submit the document to ANSI. The document has been revised to resolve the disapproval and include revisions from comments on the approval ballots.
Author: Béla G. Lipták
Publisher: Butterworth-Heinemann
ISBN: 1483145026
Category : Technology & Engineering
Languages : en
Pages : 1580
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Book Description
Instrument Engineers' Handbook, Third Edition: Process Control provides information pertinent to control hardware, including transmitters, controllers, control valves, displays, and computer systems. This book presents the control theory and shows how the unit processes of distillation and chemical reaction should be controlled. Organized into eight chapters, this edition begins with an overview of the method needed for the state-of-the-art practice of process control. This text then examines the relative merits of digital and analog displays and computers. Other chapters consider the basic industrial annunciators and other alarm systems, which consist of multiple individual alarm points that are connected to a trouble contact, a logic module, and a visual indicator. This book discusses as well the data loggers available for process control applications. The final chapter deals with the various pump control systems, the features and designs of variable-speed drives, and the metering pumps. This book is a valuable resource for engineers.
