主要技術參數(shù)：
型號 |
公稱壓力PN(MPa) |
試驗壓力PS(MPa) |
工作溫度(℃) |
適用介質(zhì) |
|
殼體 |
密封 |
||||
H71W-16T |
1.6 |
2.4 |
1.76 |
≤200 |
水、蒸體、油品等 |
H71H-25Q |
2.5 |
3.75 |
2.75 |
≤235 |
|
H71W-25H |
≤300 |
||||
H71W-25P |
≤200 |
硝酸等腐蝕性介質(zhì) |
|||
H71W-40H |
4.0 |
6.0 |
4.4 |
≤300 |
水、蒸體、油品等 |
H71W-40P |
≤200 |
硝酸等腐蝕性介質(zhì) |
|||
主要零件材料：
規(guī)格型號 |
閥體 |
閥瓣 |
彈簧 |
H71H-16Q、H71H-25Q |
QT400-15 |
25 |
50CrCA |
H71W-25H、H71W-40H |
2Cr13 |
1Cr13 |
1Cr18Ni9Ti |
H71W-16P、H71W-25P |
ZG1Cr18Ni9Ti |
1Cr18Ni9Ti |
1Cr18Ni9Ti |
流體力學性能：H71對夾升降式止回閥的流體阻力系數(shù)、流量系數(shù)及開啟壓力：
公稱通徑 |
閥門全開啟時的流體阻力系數(shù) |
常溫下閥門全開啟時的水講E量系數(shù) |
流體的流向 |
|||||
DN |
NPS |
Kvm3=／h |
CVU.S |
CVU.K |
↑ |
↓ |
→ |
|
開啟壓力近似值KPa |
||||||||
15 |
1/2 |
6.4 |
2.6 |
3.0 |
2.5 |
3 |
2 |
2.5 |
20 |
3/4 |
5.1 |
6.4 |
7.5 |
6.3 |
3 |
2 |
2.5 |
25 |
4 |
4.1 |
12.6 |
14.8 |
12.3 |
3 |
2 |
2.5 |
32 |
11/4 |
4.1 |
19.7 |
23.1 |
19.3 |
3 |
2 |
2.5 |
40 |
11/2 |
3.8 |
29.5 |
63.9 |
28.9 |
3 |
2 |
2.5 |
50 |
2 |
3.5 |
54.6 |
99.9 |
63.5 |
3 |
2 |
2.5 |
65 |
21/2 |
3.5 |
85.4 |
150 |
83.7 |
3 |
2 |
2.5 |
80 |
3 |
3.2 |
128 |
286 |
125 |
3 |
2 |
2.5 |
100 |
4 |
2.8 |
244 |
286 |
249 |
3 |
2 |
2.5 |
125 |
5 |
2.9 |
375 |
439 |
368 |
3 |
1 |
2.2 |
150 |
6 |
3.1 |
522 |
611 |
512 |
3 |
1 |
2.2 |
200 |
8 |
3.2 |
915 |
1070 |
897 |
3 |
1 |
2.2 |
主要連接尺寸
公稱通徑DN |
15 |
20 |
25 |
32 |
40 |
50 |
65 |
80 |
100 |
125 |
150 |
200 |
|
結(jié)構(gòu)長度 |
長系列 |
25 |
31.5 |
35.5 |
40 |
45 |
56 |
63 |
71 |
80 |
110 |
125 |
160 |
短系列 |
16 |
19 |
22 |
28 |
31.5 |
40 |
46 |
50 |
60 |
90 |
105 |
140 |
|
