The concise valve handbook : sizing and construction. Volume I /

Research studies, within the process industry, routinely indicate that the final control element is responsible for 60% to 70% of poor-functioning control systems. Although valves themselves are consistently wrongly selected, regularly misapplied, and are often incorrectly installed, a large proport...

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Detalles Bibliográficos
Clasificación:Libro Electrónico
Autor principal: Crabtree, Michael A. (Autor)
Formato: Electrónico eBook
Idioma:Inglés
Publicado: New York [New York] (222 East 46th Street, New York, NY 10017) : Momentum Press, 2018.
Colección:Automation and control collection.
Temas:
Valves > Handbooks, manuals, etc.
Robinets > Guides, manuels, etc.
TECHNOLOGY & ENGINEERING > Mechanical.
Valves
ball valves
butterfly and plug valves
cavitation and flashing
characterization
construction
gas sizing
globe valves
leakage
liquid sizing
material selection
noise treatment
trim
Handbooks and manuals
Acceso en línea:Texto completo
Tabla de Contenidos:
  • 1. Basic principles
  • 1.1 The final control element as part of the control loop
  • 1.2 Basic theory
  • 1.3 Equation of continuity
  • 1.4 Bernoulli's equation
  • 1.5 Choked flow
  • 1.6 Pressure recovery
  • 1.7 Turndown ratio and rangeability
  • 1.8 Velocity profiles
  • 1.9 Reynolds number
  • 1.10 Flashing and cavitation
  • 1.11 Flashing
  • 1.12 Cavitation
  • 1.13 Leakage classification
  • 1.14 Isolation valve leakage classification
  • 2. Liquid valve sizing
  • 2.1 Practical considerations
  • 2.2 Application of formulae
  • 2.3 Sizing example
  • 2.4 Piping geometry factor
  • 2.5 Sizing example
  • 3. Gas valve sizing
  • 3.1 Pressure drop mechanism
  • 3.2 Specific heat ratio factor
  • 3.3 Gas expansion factor
  • 3.4 Valve sizing
  • 3.5 Sizing example 1
  • 4. Valve construction
  • 4.1 Globe valve
  • 4.2 Bonnet assembly
  • 4.3 PTFE (Teflon)
  • 4.4 Laminated graphite
  • 4.5 Extended bonnet
  • 4.6 Bellows seal bonnet
  • 4.7 Valve trim
  • 4.8 Guiding
  • 4.9 Post-guiding
  • 4.10 Top- and bottom-guided double seat
  • 4.11 Single-ported balanced globe valve
  • 4.12 Cage-guiding
  • 4.13 Split body globe
  • 4.14 Angle is
  • 4.15 Needle valve
  • 4.16 Bar stock body valve
  • 4.17 Gate valve
  • 4.18 Wedge gate
  • 4.19 Slab valve
  • 4.20 Expanding gate valve
  • 4.21 Knife edge gate valve
  • 4.22 Pinch valve
  • 4.23 Diaphragm valve
  • 4.24 Rotary control valves
  • 4.25 Ball valve
  • 4.26 Trunnion ball valve
  • 4.27 Characterized ball segment valve
  • 4.28 Butterfly valve
  • 4.29 Plug valve
  • 4.30 Eccentric plug valve
  • 4.31 Check valves
  • 4.32 Valve sizes and pipe schedules
  • 4.33 Material selection
  • 4.34 Corrosion
  • 4.35 Erosion
  • 4.36 End connections
  • 4.37 Screwed end connections
  • 4.38 Flanged end connections
  • 4.39 Hub end body
  • 4.40 Welded end connections
  • 4.41 Lap joint flange
  • 4.42 Flangeless connections
  • 4.43 Grayloc® connector
  • 5. Valve trim and characterization
  • 5.1 Inherent characteristics
  • 5.2 Linear inherent flow characteristic
  • 5.3 Equal percentage inherent flow characteristic
  • 5.4 Quick opening inherent flow characteristic
  • 5.5 Modified percentage inherent flow characteristic
  • 5.6 Characteristic profiling
  • 5.7 Installed characteristics
  • 5.8 Cavitation control
  • 5.9 Reducing cavitation
  • 5.10 Eliminating cavitation
  • 5.11 Noise sources
  • 5.12 Mechanical noise
  • 5.13 Hydrodynamic noise
  • 5.14 Aerodynamic noise
  • 5.15 Noise prediction
  • 5.16 Noise control
  • 5.17 Path treatment
  • 5.18 Insulation
  • 5.19 Silencers
  • 5.20 Source treatment
  • 5.21 Velocity control
  • 6. Valve selection
  • Glossary
  • Bibliography
  • About the author
  • Index.

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