Piping Systems and Applications! - Resources, Tools and Basic Information for Engineering and Design.
Typical flow coefficients - Cv - and flow factors - Kv - of "straight-through" diaphragm valves of "Saunders" type
Sponsored Links
The table below indicates typical flow coefficients - Cv - and flow factors - Kv - for diaphragm straight through flanged cast iron valves of "Saunders" type.
| Valve Size | Unlined | Rubber Lined | Glass/Plastic Lined | ||||
| DN | Inch | Cv | Kv | Cv | Kv | Cv | Kv |
| 15 | 9 | 7 | 9 | 8 | |||
| 25 | 1 | 38 | 33 | 31 | 26 | 39 | 34 |
| 32 | 1 | 56 | 48 | 46 | 39 | 58 | 50 |
| 40 | 1 | 75 | 65 | 66 | 57 | 79 | 68 |
| 50 | 2 | 128 | 110 | 107 | 92 | 138 | 119 |
| 65 | 2 | 238 | 205 | 195 | 168 | 254 | 219 |
| 80 | 3 | 330 | 284 | 264 | 228 | 342 | 295 |
| 100 | 4 | 588 | 507 | 480 | 414 | 618 | 533 |
| 125 | 5 | 924 | 797 | 720 | 621 | 960 | 828 |
| 150 | 6 | 1 680 | 1 448 | 1 260 | 1 086 | 1 800 | 1 552 |
| 200 | 8 | 2 580 | 2 224 | 2 196 | 1 893 | 2 724 | 2 348 |
| 250 | 10 | 4 020 | 3 466 | 3 420 | 2 948 | 4 296 | 3 703 |
| 300 | 12 | 6 060 | 5 224 | 4 884 | 4 210 | ||
| 350 | 14 | 10 300 | 8 879 | 9 950 | 8 578 | ||
The opening and closing characteristic of the valves are close to positive linear:
This close to linear characteristic make the valves suited for adjustment and balancing operations. In addition the lined versions are able to resist wear and tear and rough environments and processes.
Sponsored Links
Difficult to find your favorite ToolBox page? Add a link to the page in your own personal Shortlist!
Translate this page to
Spanish
French
German
Italian
Dutch
Norwegian
© The Piping ToolBox
The content in The Piping ToolBox is copyrighted but can be used with NO WARRANTY or LIABILITY. Important information should always be double checked with alternative sources. All applicable national and local regulations and practices concerning this aspects must be strictly followed and adhered to.
We appreciate any comments and tips on how to make The Piping ToolBox a better information source. Please contact us by email if You find any faults, inaccurate, or otherwise unacceptable information.
5 12 1
View Engineering, Design and Construction news in the absolute FREE Automatic WebSite Viewer. Engineering Breaking News!
