CONTROL VALVE HANDBOOK - Emerson Electric

1 CONTROL VALVE HANDBOOKF ifth EditionEmerson Automation SolutionsFlow ControlsMarshalltown, Iowa 50158 USAS orocaba, 18087 BrazilCernay, 68700 FranceDubai, United Arab EmiratesSingapore 128461 SingaporeNeither Emerson , Emerson Automation Solutions, nor any of their affiliated entities assumes responsibility for the selection, use or maintenance of any product. Responsibility for proper selection, use, and maintenance of any product remains solely with the purchaser and end contents of this publication are presented for informational purposes only, and while every effort has been made to ensure their accuracy, they are not to be construed as warranties or guarantees, express or implied, regarding the products or services described herein or their use or applicability.

2 All sales are governed by our terms and conditions, which are available upon request. We reserve the right to modify or improve the designs or specifications of such products at any time without is a mark owned by one of the companies in the Emerson Automation Solutions business unit of Emerson Electric Co. Emerson and the Emerson logo are trademarks and service marks of Emerson Electric Co. All other marks are the property of their respective owners. 2005, 2019 Fisher Controls International LLC. All rights Sept19 PrefaceControl valves are an increasingly vital component of modern manufacturing around the world.

3 Properly selected and maintained CONTROL valves increase efficiency, safety, profitability, and CONTROL VALVE HANDBOOK has been a primary reference since its first printing in 1965. This fifth edition presents vital information on CONTROL VALVE performance and the latest 1 offers an introduction to CONTROL valves, including definitions for common CONTROL VALVE and instrumentation 2 develops the vital topic of CONTROL VALVE 3 covers VALVE and actuator 4 describes digital VALVE controllers, analog positioners, boosters, and other CONTROL VALVE 5 is a comprehensive guide to selecting the best CONTROL VALVE for an 6 addresses the selection and use of special CONTROL 7 explains desuperheaters, steam conditioning valves.

4 And turbine bypass 8 details typical CONTROL VALVE installation and maintenance 9 contains information on CONTROL VALVE standards and approval agencies across the 10 identifies isolation valves and 11 covers discrete 12 discusses various process safety instrumented 13 provides useful tables of engineering reference 14 includes piping reference 15 is a handy resource for common CONTROL VALVE HANDBOOK is both a textbook and a reference on the strongest link in the CONTROL loop: the CONTROL VALVE and its accessories. This book includes extensive and proven knowledge from leading experts in the process CONTROL field, including contributions from the of Contents5 CONTROL VALVE HANDBOOK | Table of ContentsChapter 1: Introduction to CONTROL Valves.

5 What is a CONTROL VALVE ? .. Sliding-Stem CONTROL VALVE Terminology .. Rotary CONTROL VALVE Terminology .. CONTROL VALVE Functions and Characteristics Terminology .. Process CONTROL Terminology ..25 Chapter 2: CONTROL VALVE Performance .. Process Variability .. Deadband .. Causes of Deadband .. Effects of Deadband .. Performance Tests .. Friction .. Actuator and Positioner Design .. VALVE Response Time .. Dead Time .. Dynamic Time .. Solutions .. Supply Pressure .. Minimizing Dead Time .. VALVE Response Time .. VALVE Type and Characterization.

6 Installed Gain .. Loop Gain .. Process Optimization .. VALVE Sizing .. Economic Results .. Summary ..48 Chapter 3: VALVE and Actuator Types .. CONTROL VALVE Styles .. Globe Valves .. Single-Port VALVE Bodies .. Post- and Port-Guided VALVE Bodies .. Cage-Style VALVE Bodies .. Double-Ported VALVE Bodies .. Three-Way VALVE Sanitary Valves .. Rotary Valves .. Butterfly VALVE Bodies .. Segmented Ball VALVE Bodies ..556 CONTROL VALVE HANDBOOK | Table of High-Performance Butterfly VALVE Bodies .. Eccentric Plug VALVE Bodies .. Full-Port Ball VALVE Bodies.

7 Multi-Port Flow Selector .. CONTROL VALVE End Connections .. Screwed Pipe Threads .. Bolted Gasketed Flanges .. Welded End Connections .. Other VALVE End Connections .. VALVE Body Bonnets .. Extension Bellows Seal Bonnets .. CONTROL VALVE PTFE V-Ring .. Laminated and Filament Graphite .. Regulatory Requirements for Fugitive Emissions .. Global Standards for Fugitive Emissions .. Single PTFE V-Ring Packing .. ENVIRO-SEAL PTFE ENVIRO-SEAL Duplex Packing .. ISO-Seal PTFE Packing .. ENVIRO-SEAL Graphite ULF .. HIGH-SEAL Graphite ULF.

8 ISO-Seal Graphite Packing .. ENVIRO-SEAL Graphite for Rotary Valves .. Graphite Ribbon for Rotary Valves .. Sliding-Stem Environmental Packing Rotary Environmental Packing Selection .. Characterization of Cage-Guided VALVE Bodies .. VALVE Plug Guiding .. Restricted-Capacity CONTROL VALVE Trim .. Actuators .. Diaphragm Actuators .. Piston Actuators .. Rack-and-Pinion Actuators .. Electric Actuators ..73 Chapter 4: CONTROL VALVE Accessories .. Environmental & Application Considerations .. Positioners .. Pneumatic Positioners ..757 CONTROL VALVE HANDBOOK | Table of Analog I/P Positioners.

9 Digital VALVE Controllers .. Diagnostics .. Two-Way Digital Communication .. I/P Transducers .. Volume Boosters .. Safety Instrumented Systems (SIS) .. Partial Stroke Testing .. Controllers .. Position Transmitters .. Limit Switches .. Solenoid Valves .. Trip Systems .. Handwheels ..84 Chapter 5: CONTROL VALVE Sizing .. CONTROL VALVE Dimensions .. Face-to-Face Dimensions for Flanged, Globe-Style Valves .. Face-to-Face Dimensions for Butt Weld-End, Globe-Style Valves .. Face-to-Face Dimensions for Socket Weld-End, Globe-Style Valves .. Face-to-Face Dimensions for Screwed-End, Globe-Style Valves.

10 Face-to-Centerline Dimensions for Raised-Face, Globe-Style Angle Valves .. Face-to-Face Dimensions for Separable Flange, Globe-Style Valves .. Face-to-Face Dimensions for Flanged and Flangeless Rotary Valves .. Face-to-Face Dimensions for Single Flange and Flangeless Butterfly Valves .. Face-to-Face Dimensions for High-Pressure, Offset Butterfly Valves .. CONTROL VALVE Seat Leakage Classifications .. Class VI Maximum Seat Leakage Allowable .. CONTROL VALVE Flow Flow Characteristics .. Selection of Flow Characteristics .. VALVE Sizing .. Equation Constants.