API 594 Face to Face Dimensions Dual-Plate Wafer Check Valves
Face to Face Dimensions Dual-Plate Wafer Check Valves API Std. 594 Class 150-2500 Type A
Dual-Plate Wafer Check Valves
| NPS | CLASS | |||||
| 150 | 300 | 600 | 900 | 1500 | 2500 | |
| 2 | 60 | 60 | 60 | 70 | 70 | 70 |
| 2½ | 67 | 67 | 67 | 83 | 83 | 83 |
| 3 | 73 | 73 | 73 | 83 | 83 | 86 |
| 4 | 73 | 73 | 79 | 102 | 102 | 105 |
| 6 | 98 | 98 | 136 | 159 | 159 | 159 |
| 8 | 127 | 127 | 165 | 206 | 206 | 206 |
| 10 | 146 | 146 | 213 | 241 | 248 | 254 |
| 12 | 181 | 181 | 229 | 292 | 305 | 305 |
| 14 | 184 | 222 | 273 | 356 | 356 | |
| 16 | 191 | 232 | 305 | 384 | 384 | |
| 18 | 203 | 264 | 362 | 451 | 468 | |
| 20 | 219 | 292 | 368 | 451 | 533 | |
| 24 | 222 | 318 | 438 | 495 | 559 | |
| 30 | 305 | 368 | 505 | |||
| 36 | 368 | 483 | 635 | |||
| 42 | 432 | 568 | 701 | |||
| 48 | 524 | 629 | ||||
| NPS | 150 | 300 | 600 | 900 | 1500 | 2500 |
| CLASS | ||||||
Notes:
- Dimensions are in millimeters unless otherwise indicated.
- The face-to-face tolerance shall be as specified in ASME B16.10 for sizes
through NPS 24 and shall be 3 mm for sizes larger than NPS 24. - Flange faces with ring-joint grooves shall conform to the dimensions
shown in either ASME B16.5 or ASME B16.47, as applicable.
