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The concise valve handbook : actuation, maintenance, and safety relief. Volume II /
Volume II: Actuation, Maintenance, and Safety Relief, takes an in-depth look at actuators and positioners. This volume also explores a variety of maintenance and diagnostic issues including: testing for dead-band/hysteresis, stick-slip and non-linearity; on-line diagnostics; signature analysis; and...
| Clasificación: | Libro Electrónico |
|---|---|
| Autor principal: | |
| 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: | |
| Acceso en línea: | Texto completo |
Tabla de Contenidos:
- 7. Valve actuators and positioners
- 7.1 Pneumatic control
- 7.2 Flapper-nozzle assembly
- 7.3 I/O converter
- 7.4 Diaphragm actuators
- 7.5 Springless diaphragm
- 7.6 Advantages and disadvantages of diaphragm actuators
- 7.7 Cylinder actuators
- 7.8 Spool block
- 7.9 Electro-hydraulic actuation
- 7.10 Electric actuation
- 7.11 Torque limiting
- 7.12 Hammer-blow mechanism
- 7.13 Solenoid valve
- 7.14 Digital actuators
- 7.15 Transfer mechanisms
- 7.16 Valve positioners
- 7.17 Positioner guidelines
- 8. Valve testing and diagnostics
- 8.1 Deadband and hysteresis
- 8.2 Testing procedures
- 8.3 Online diagnostics
- 8.4 Electronic torque monitoring
- 9. Valve maintenance and repair
- 9.1 In-line repairs
- 9.2 Repairs under pressure
- 9.3 Repairs on drained systems
- 9.4 Packing replacement
- 9.5 Replacing or refinishing seat rings
- 9.6 Other in-line repairs
- 9.7 In-line post-repair procedures
- 9.8 Shop repairs
- 9.9 Actuator bench set
- 9.10 Spring calculations
- 10. Safety relief valves
- 10.1 History
- 10.2 Definitions
- 10.3 Weight-loaded pressure/vacuum relief valves
- 10.4 Spring-loaded relief valves
- 10.5 Applications
- 10.6 Limitations
- 10.7 Safety valves
- 10.8 Basic operation: lifting
- 10.9 Basic operation: reseating
- 10.10 Conventional safety relief valves
- 10.11 Balanced safety relief valves
- 10.12 Bellows-type balanced safety valve
- 10.13 Piston-type balanced safety valve
- 10.14 Non-reclosing pressure relief devices
- 10.15 Conventional rupture disc
- 10.16 Scored tension-loaded rupture disc
- 10.17 Composite rupture disc
- 10.18 Graphite rupture disc
- 10.19 Burst disc applications and installation practices
- 10.20 Performance tolerance
- 10.21 Maximum operating pressure
- 10.22 Cyclic/pulsating duties
- 10.23 Case A. 276 kPa (g) or higher
- 10.24 Case B. Lower than 276 kPa (g)
- 10.25 Standards
- Appendix A. J-T valve
- Appendix B. Basic acoustics
- Appendix C. Block and bleed
- Appendix D. Water hammer
- Appendix E. Stainless steel
- Glossary
- Bibliography
- About the author
- Index.