ESDU 69022
Pressure losses in valves.
Abstract:
ESDU 69022 gives approximate pressure loss information for single-phase flow through a number of types of shut-off and simple flow control valves. The information is presented in the form of non-dimensional pressure loss coefficients and applies for the flow of liquids and also for the flow of gases at low Mach numbers. The information given is based on both published data and data supplied by a number of valve manufacturers. Valves are classified into types and illustrated schematically in a table which acts as an index to the pressure loss data. Also included are typical size ranges, temperature and pressure limits and examples of the applications of the various types. This latter information is intended only as initial guidance as to the suitability of a valve for a particular duty and the final choice should be considered in conjunction with manufacturers and their literature.Indexed under:
- Angle Valves
- Butterfly Valves
- Cocks
- Diaphragm Valves
- Gate Valves
- Globe Valves
- Needle Valves
- Plug Valves
- Poppet-Type Valves
- Pressure Drop in Internal Flow
- Stop Valves
- Throttle Valves
- Y-Valves
Details:
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This Data Item contains 17 interactive graph(s) as listed below.
| Graph | Title |
|---|---|
| Figure 1 | C'K for rectangular port plug valves |
| Figure 2 | C'K for circular port plug valves |
| Figure 3 | C'K for branch flow, rectangular port three-way plug valves |
| Figure 4 | C'K for butterfly valves |
| Figure 5 | C'K for cast body globe valves |
| Figure 6 | C'K for cast body angle valves |
| Figure 7 | C'K for forged globe valves |
| Figure 8 | C'K for forged angle valves |
| Figure 9 | C'K for Y valves |
| Figure 10 | C'K for gate valves |
| Figure 11 | C'K for diaphragm valves |
| Figure 12 | Approximate effect of partial opening, butterfly valves |
| Figure 13 | Approximate effect of partial opening, poppet type valves |
| Figure 14 | Approximate effect of partial opening, gate valves |
| Figure 15 | Approximate effect of partial opening, diaphragm valves |
| Figure 16 | Approximate effect of Reynolds number, gate, plug and butterfly valves |
| Figure 17 | Approximate effect of Reynolds poppet type and diaphragm valves |