抽氣止回閥Extraction check valve.
用途/Application
該閥門適用于電站汽輪機的給水預熱系統或其它要求快速關閉的工業管線系統，在氣源壓力（O.5~0.7Mpa)或回位彈簧的作用下迅速關閉（關閉時間<0.5s)以也防止質倒流損壞汽輪機和其它裝置。
適用介質：水、蒸氣
主要性能規范/Main technical specification
| 型號 Model |
公稱壓力 Pressure Class |
強度試驗壓力 Shell test Pressure |
密封試驗壓力 SeatTest Pressure |
| Mpa |
Mpa |
Mpa |
| SAH664H-20 |
2.0 |
3.0 |
2.20 |
| SAH664H-50 |
5.0 |
7.5 |
5.50 |
| NH664H-100 NH664Y-100C6 |
10.0 |
15.5 |
11.0 |
壓力溫度基準/Pressure-temperature ratings
| 型號Model |
工作溫度Working temperature °C |
| 38 |
200 |
260 |
316 |
371 |
399 |
427 |
454 |
500 |
540 |
| SAH664H-20 |
2.0 |
1.4 |
1.2 |
1.0 |
0.9 |
0.65 |
0.55 |
|
|
|
| SAH664H-50 |
5.1 |
4.4 |
4.2 |
3.9 |
3.75 |
3.55 |
2.9 |
|
|
|
| SAH664H-100 |
10.2 |
8.5 |
8.5 |
7.7 |
7.5 |
7.1 |
5.8 |
6.85 |
5.5 |
|
| SAH664Y-100C6 |
10.3 |
9.3 |
9.0 |
8.2 |
8.0 |
7.5 |
7.1 |
|
|
3.0 |
主要零件材料 Material for main parts
| 零件名稱 Part name |
20 NH664H-50 100 |
NH664Y-100C6 |
| 閥體、閥瓣、閥蓋、搖桿 Body, Disk,Bonnet,Hinge Pin |
WCB |
WC6 |
| 軸 Shaft |
2Cr13 |
20Cr1Mo1V1A |
| 中法蘭螺栓Bolt/Nut |
35/45 |
20Cr1Mo1V1A/45 |
主要外形尺寸及重量/Main size of outside & weight
型號Model: SAH664H-20
| 口徑 Size (mm) |
外形尺寸Overall Dimension(mm) |
重量Weight (Kg) |
| L |
d |
D |
H |
H1 |
| 450 |
740 |
428 |
482 |
990 |
755 |
625 |
| 500 |
790 |
478 |
532 |
990 |
852 |
760 |
| 600 |
915 |
574 |
634 |
990 |
1150 |
1080 |
| 700 |
1040 |
678 |
726 |
990 |
1240 |
1250 |
型號Model: SAH664H-50
| 口徑 Size (mm) |
外形尺寸Overall Dimension(mm) |
重量Weight (Kg) |
| L |
d |
D |
H |
H1 |
| 200 |
526 |
198 |
248 |
815 |
240 |
| 300 |
610 |
296 |
332 |
845 |
360 |
| 350 |
838 |
332 |
380 |
889 |
620 |
型號Model: SAH664H-100
| 口徑 Size (mm) |
外形尺寸Overall Dimension(mm) |
重量Weight (Kg) |
| L |
d |
D |
H |
H1 |
| 250 |
680 |
236 |
302 |
904 |
390 |
| 500 |
1020 |
478 |
532 |
1240 |
1490 |
型號Model: SAH664H-100C6
| 口徑 Size (mm) |
外形尺寸Overall Dimension(mm) |
重量Weight (Kg) |
| L |
d |
D |
H |
H1 |
| 250 |
526 |
188 |
248 |
815 |
280 |
| 500 |
680 |
236 |
302 |
904 |
390 |
