EN
A check valve refers to a valve whose opening and closing parts are circular discs and rely on its own weight and medium pressure to block the backflow of the medium.
Cast Steel Swing check valve bonnet bolts, univalve swing, is the international swing check valve structure. Steel flanged check valve function of the control valve is a unidirectional flow of the medium in the pipeline, to prevent the line of medium back.
| CLASS | SIZE | d | L | Lj | D | D1 | D2 | b | Z-d1 | H |
| 150 | 2" | 50 | 203 | 216 | 152 | 120.5 | 92 | 19 | 4-19 | 159 |
| 2.1/2" | 65 | 216 | 229 | 178 | 139.5 | 105 | 22 | 4-19 | 168 | |
| 3" | 80 | 241 | 354 | 190 | 152.5 | 127 | 24 | 4-19 | 181 | |
| 4" | 100 | 292 | 305 | 229 | 190.5 | 157 | 24 | 8-19 | 203 | |
| 6" | 150 | 356 | 368 | 279 | 241.5 | 216 | 25 | 8-22 | 276 | |
| 8" | 200 | 495 | 508 | 343 | 298.5 | 270 | 29 | 8-22 | 330 | |
| 10" | 250 | 622 | 635 | 406 | 362 | 324 | 30 | 12-25 | 381 | |
| 12" | 300 | 698 | 711 | 483 | 432 | 381 | 32 | 12-25 | 410 | |
| 14" | 350 | 787 | 800 | 533 | 476 | 413 | 35 | 12-29 | 524 | |
| 16" | 400 | 914 | 876 | 597 | 540 | 470 | 37 | 16-29 | 572 | |
| 300 | 2" | 50 | 267 | 283 | 165 | 127 | 92 | 22 | 8-19 | 175 |
| 2.1/2" | 65 | 292 | 308 | 190 | 149 | 105 | 25 | 8-22 | 181 | |
| 3" | 80 | 318 | 333 | 210 | 168.5 | 127 | 29 | 8-22 | 191 | |
| 4" | 100 | 356 | 371 | 254 | 200 | 157 | 32 | 8-22 | 241 | |
| 6" | 150 | 444 | 460 | 318 | 270 | 216 | 37 | 12-22 | 305 | |
| 8" | 200 | 533 | 549 | 381 | 330 | 270 | 41 | 12-25 | 362 | |
| 10" | 250 | 622 | 638 | 444 | 387.5 | 324 | 48 | 16-29 | 413 | |
| 12" | 300 | 711 | 627 | 521 | 451 | 371 | 51 | 16-32 | 451 | |
| 14" | 350 | 838 | 854 | 584 | 514.5 | 413 | 54 | 20-32 | 550 | |
| 600 | 2" | 50 | 292 | 295 | 165 | 127 | 92 | 25 | 8-19 | 203 |
| 2.1/2" | 65 | 330 | 333 | 190 | 149 | 100 | 29 | 8-22 | 219 | |
| 3" | 80 | 356 | 359 | 210 | 168 | 127 | 32 | 8-22 | 238 | |
| 4" | 100 | 432 | 438 | 273 | 216 | 157 | 38 | 8-25 | 280 | |
| 6" | 150 | 559 | 562 | 356 | 292 | 216 | 48 | 12-29 | 381 | |
| 8" | 200 | 660 | 664 | 419 | 349 | 270 | 56 | 12-32 | 438 | |
| 10" | 250 | 787 | 791 | 508 | 432 | 324 | 64 | 16-35 | 527 | |
| 12" | 300 | 838 | 841 | 559 | 489 | 381 | 67 | 20-35 | 641 |
WCB body check valves manufacture standard is API 6D,ASME B16.34,DIN3202,BS1868,JIS B2071. DI body check valves flanged end manufacture standard is MSS SP-71,DIN3202,BS5153,JIS B2031.
WCB body check valves pressure can be Class 150/300/600/900, PN10/16/25/40/63,5K/10K/16K, D.I.body check valves pressure is Class125/150, PN10/16,5K/10K16K.
Stardard: DIN 3202 PN10/16, ANSI CLASS 125/150
Face to face: DIN 3202 F1, MSS-SP-85
Connection flange type: Flange end
WCB body check valves have higher strength, plasticity, and toughness than DI body check valves, more suitable for higher pressures and lower or higher temperature fluid systems.
A check valve refers to a valve whose opening and closing parts are circular discs and rely on its own weight and medium pressure to block the backflow of the medium.
The swing check valve is automatically opened and closed by the force generated by the flow of the medium itself in the pipeline. It belongs to an automatic valve. The function of the swing check valve is to prevent the medium in the pipeline from flowing back. Check valves belong to the category of automatic valves, and the opening and closing parts are opened or closed by the force of the flowing medium. The check valve is only used in the pipeline where the medium flows in one direction to prevent the medium from returning to prevent accidents.
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