【美标止回阀技术参数】
| 150磅级 | | 公称通径DN | 尺寸（mm） | | (mm) | (in) | L | D | D1 | D2 | b | Z-Фd | H | | 50 | 2 | 203 | 152 | 120.6 | 92 | 19 | 4-Ф19 | 161 | | 65 | 2 1/2 | 216 | 178 | 139.7 | 105 | 22 | 4-Ф19 | 180 | | 80 | 3 | 241 | 190 | 152.4 | 127 | 24 | 4-Ф19 | 190 | | 100 | 4 | 292 | 229 | 190.5 | 157 | 24 | 8-Ф19 | 203 | | 125 | 5 | 330 | 254 | 215.9 | 186 | 24 | 8-Ф22 | 229 | | 150 | 6 | 356 | 279 | 241.3 | 216 | 25 | 8-Ф22 | 257 | | 200 | 8 | 495 | 343 | 298.4 | 270 | 29 | 8-Ф22 | 292 | | 250 | 10 | 622 | 406 | 362.0 | 324 | 30 | 12-Ф25 | 355 | | 300 | 12 | 698 | 483 | 431.8 | 381 | 32 | 12-Ф25 | 396 | | 350 | 14 | 787 | 533 | 476.2 | 413 | 35 | 12-Ф29 | 445 | | 400 | 16 | 864 | 597 | 539.8 | 470 | 37 | 16-Ф29 | 490 | | 450 | 18 | 978 | 635 | 577.8 | 533 | 40 | 16-Ф32 | 520 | | 500 | 20 | 978 | 698 | 635.0 | 584 | 43 | 20-Ф32 | 546 | | | |
