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| End Connection: | Butt Weld | Bonnet Type: | BB Or PS |
|---|---|---|---|
| Stem Material: | SS410 | Applications: | Water, Fuel Oi, Chemical Feed |
| Presssure: | 150LB-1500Lb | Face To Face: | ASME B 16.34 |
B16.25 Butt Weld End Plug Disc Manual Operation BS 1873 Globe Valve
TEKO GLOBE VALVES
Globe valves are suited for service where Throttling is required. Globe valve flow characteristics allow accurate and repeatable flow control. Caution should be taken to avoid very close throttling when the pressure drop exceeds around 20%. This close throttling can lead to excessive noise or vibration and can result in damage to the valves and other piping system components.
ANSI STANDARDS - AMERICAN NATIONAL STANDARDS INSTITUTE
| B1.1 | Unified Screw Threads |
| B1.5 | Acme Screw Threads |
| B1.8 | Stub Acme Screw Threads |
| B1.12 | Class 5 Interference - Fit threads |
| B2.1 | Pipe Threads |
| B16.5 | Steel Pipe Flanges, and Flange Fittings |
| B16.10 | Face to Face and End to End Dimensions of Ferrous Valves |
| B16.11 | Forged Steel Fittings, Socket Welding and Threaded |
| B16.20 | Ring-Joint Gaskets and Grooves for Steel Pipe Flanges |
| B16.21 | Non-metallic Gaskets for Pipe Flanges |
| B16.25 | Buttwelding Ends |
| B16.34 | Steel Valves |
| B18.2.2 | Square and Hex Nuts |
| B31.1 | Power Piping |
| B31.2 | Fuel Gas Piping |
| B31.3 | Petroleum Refinery Piping |
| B31.4 | Liquid Petroleum Transportation Piping Systems |
| B31.5 | Refridgeration Piping Systems |
| B31.6 | Chemical Process Piping |
| B31.7 | Nuclear Power Piping |
| B31.8 | Gas Transmission and Distribution Piping Systems |
| B36.10 | Wrought-Steel and Wrought-Iron Pipe |
Mateiral Selection
ASTM Classifi cation | Service conditions |
A216 WCB | For use in service up to 537°C)assuming corrosion and oxidation are not a factor (1)(2) |
A217 C5 | For use in service up to 649° . Offers good corrosion and oxidation resistance. |
A351 LCC | For service between --46°C and 343°C. This material must be quenched and tempered to obtain tensile and impact properties needed at low temperatures. |
A351 LC3 | For service between -101°C and 343°C. Subsequent heat treatment is used to obtain tensile and impact properties needed at subzero temperatures. |
A351 CF8M | For service up to 537°C , where corrosion and oxidation resistance are required. |
A351 CF8 | For service up to537°C, where corrosion and oxidation resistance are desired, but lower costs than CF8M and slightly lower strength and corrosion resistance can be accepted. |
(1) Upon prolonged exposure to temperatures above 426°C , the carbide phase of carbon steel may be converted to graphite. Permissible, but not recommended for prolonged use above 426°C
(2) Product used within the jurisdiction of Power piping, ASME Code for Pressure piping B31.3, is subject to the same maximum temperature limitations placed upon the material in that document.
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