exhaust check valve
technical parameter
nominal diameter: dn50～1000mm
nominal pressure: pn1.0～10.0mpa
working temperature: ≤550℃
main material: wcb, wc6, wc9
applicable medium: water, steam, air, oil
product detail
product description
the steam extraction check valve is mainly used in the steam extraction system of the steam turbine of the thermal power plant to prevent the backflow of the medium or water, and to protect the important facilities such as the steam turbine water pump. , the valve closes instantly, and the closing time is less than 0.5 seconds.
performance specifications
1. nominal pressure:
| pn | 1.0~2.5 | 4.0~6.4 | 10.0 |
| dn | 50~1000 | 50~400 | 80~350 |
2. applicable medium: water, steam, air, oil.
3. working temperature:
| main material | wcb | wc6 | wc9 |
| operating temperature | ≤425℃ | ≤540℃ | ≤550℃ |
main external connection dimensions
| h664h-10 | ||||||||||
| dn | l | d | d1 | d2 | h | h1 | h2 | h3 | l1 | w（kg） |
| 450 | 740 | 428 | 476 | 630 | 990 | 425 | 510 | 755 | 486 | 620 |
| 500 | 790 | 468 | 520 | 658 | 990 | 470 | 545 | 852 | 554 | 759 |
| 700 | 1040 | 682 | 747 | 845 | 990 | 560 | 625 | 1240 | 820 | 1258 |
| 800 | 1295 | 780 | 842 | 995 | 1257 | 650 | 645 | 1348.3 | 928 | 1788 |
| 1000 | 1600 | 1110 | 1150 | 1230 | 1700 | 850 | 745 | 1840 | 1040 | 4800 |
| h664h-16 | ||||||||
| dn | l | d | d1 | d2 | h | h1 | h2 | w（kg） |
| 200 | 526 | 195 | 239 | 410 | 815 | 325 | 390 | 236 |
| 300 | 610 | 300 | 354 | 494 | 845 | 350 | 445 | 376 |
| 400 | 838 | 380 | 436 | 600 | 1142 | 450 | 490 | 674 |
| h664h-25 | ||||||||
| dn | l | d | d1 | d2 | h | h1 | h2 | w（kg） |
| 250 | 680 | 250 | 302 | 475 | 904 | 380 | 440 | 385 |
| 500 | 1020 | 480 | 584 | 820 | 1240 | 580 | 560 | 1537 |