125LB Swing Check Valve Flange Type
125LB ANSI Cast Iron Check Valve/ Flanged Swing Check Valve
Introduction
Swing check valve, also known as one-way valve or check valve, is used to prevent the backflow of medium in the pipeline. The valve whose opening and closing parts open or close automatically by medium flow and force to prevent medium backflow is called check valve. The check valve is an automatic valve, which is mainly used on the pipeline with one-way flow of medium. The medium is only allowed to flow in one direction to prevent accidents. This type of valve shall be installed horizontally in the pipeline.
Usage
It can be applied to water, steam, oil, nitric acid, acetic acid, strong oxidizing medium, urea and other media. It is mainly used in petroleum, chemical, pharmaceutical, chemical fertilizer, electric power and other pipelines.
Basic Standard:
| Basic standard | |
| Flange end | ANSI B16.1 |
| Face to face | ANSI B16.1 |
| Test | MSSSP-71 |
Feature
| Norminal pressure(PSI) | 125 |
| Suitbk temperature | <200°C |
| Seal test | 1.37MPa |
| Shell test | 2.46mpa |
| Suitable medium: | steam,water,oil |
Materials
| part name | body | body seal ring | disc seal ring | disc |
| material | ASTM A126 B | ZCuSn5Pb5Zn5 | ZCuSn5Pb5Zn5 | ASTM A126 B |
Dimensions
| Size | DN | L | D | D1 | b | Zxф | H |
| 2" | 50 | 203.2 | 152 | 121 | 15.9 | 4-19 | 113 |
| 2-1/2 " | 65 | 215.9 | 178 | 140 | 17.5 | 4-19 | 133 |
| 3" | 80 | 241.3 | 190 | 152.5 | 19 | 4-19 | 144 |
| 4" | 100 | 292 | 228.6 | 190.5 | 24 | 8-19 | 168 |
| 5 " | 125 | 330.2 | 254 | 215.9 | 23.4 | 8-22 | 198 |
| 6" | 150 | 355.6 | 279.4 | 241 | 25.4 | 8-22 | 217 |
| 8" | 200 | 495 | 343 | 298.5 | 30 | 8-22 | 261 |
| 10" | 250 | 622 | 406.4 | 362 | 31 | 12-25 | 287 |
| 12" | 300 | 698.5 | 483 | 432 | 31.8 | 12-25 | 319 |
| 14" | 350 | 787 | 533 | 476 | 35 | 12-29 | 443 |
| 16" | 400 | 914 | 597 | 540 | 36.6 | 16-29 | 595.5 |
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