阻火器是用来阻止易燃气体、液体的火焰蔓延和防止回火而引起爆炸的安全装置。通常用在一下场合：
选型说明：
|
型号
|
材质和连接
|
口径和压力
|
防爆等级
|
|
ZHQ-□
|
—□ □
|
—□ / □
|
—□
|
|
B
|
C-C.S
|
I-对焊
|
15-DN15
|
0.6-0.6MPa
|
A-IIA
|
|
R
|
S1-304
|
II-法兰
|
25-DN25
|
1.0-1.0MPa
|
B-IIB
|
|
S
|
S2-304L
|
III-螺纹
|
32-DN32
|
1.6-1.6MPa
|
C-IIC
|
|
1
|
S3-316
|
|
40-DN40
|
2.5-2.5MPa
|
|
|
2
|
S4-316L
|
|
65-DN65
|
2.0-2.0MPa(美标)
|
|
|
3
|
A-Aluminum
|
|
80-DN80
|
5.0-5.0MPa(美标)
|
|
|
|
H-Hastelloy
|
|
100-DN100
|
其他
|
|
|
|
|
|
125-DN125
|
|
|
|
|
|
|
150-DN150
|
|
|
|
|
|
|
200-DN200
|
|
|
|
|
|
|
250-DN250
|
|
|
|
|
|
300-DN300
|
|
|
|
|
|
400-DN400
|
|
|
|
|
|
500-DN500
|
|
|
|
|
|
600-DN600
|
|
|
ZHQ-B-S1II-200/2.0-B
注解：管道防爆波纹阻火器，304材质，法兰连接，口径DN200，压力美标法兰150Lb(2.0MPa)，防爆等级为IIB。
阻火器压降和通量对照表:
|
Pressure
|
Air Flow Rates in 1,000Nm3/h
|
|
mmH2O
|
mbar
|
1”
|
2”
|
3”
|
4”
|
6”
|
8”
|
10”
|
12”
|
|
25
|
2.5
|
0.056
|
0.127
|
0.224
|
0.368
|
0.699
|
1.215
|
1.196
|
2.729
|
|
50
|
4.9
|
0.089
|
0.193
|
0.353
|
0.572
|
1.113
|
1.897
|
2.984
|
4.345
|
|
75
|
7.4
|
0.117
|
0.249
|
0.465
|
0.754
|
1.463
|
2.522
|
3.959
|
5.768
|
|
100
|
9.8
|
0.140
|
0.297
|
0.564
|
0.917
|
1.773
|
3.096
|
4.854
|
7.042
|
|
150
|
15
|
0.179
|
0.378
|
0.735
|
1.203
|
2.311
|
4.114
|
6.438
|
9.266
|
|
200
|
20
|
0.214
|
0.446
|
0.883
|
1.449
|
2.780
|
4.987
|
7.797
|
11.177
|
|
250
|
25
|
0.245
|
0.505
|
1.014
|
1.666
|
3.201
|
5.746
|
8.977
|
12.865
|
|
300
|
30
|
0.274
|
0.560
|
1.133
|
1.860
|
3.582
|
6.413
|
10.015
|
14.376
|
|
350
|
34
|
0.302
|
0.610
|
1.242
|
2.037
|
3.930
|
7.006
|
10.940
|
15.741
|
|
400
|
39
|
0.328
|
0.657
|
1.341
|
2.199
|
4.246
|
7.538
|
11.742
|
16.980
|
|
450
|
44
|
0.352
|
0.702
|
1.432
|
2.348
|
4.535
|
8.020
|
12.528
|
18.106
|
|
500
|
49
|
0.375
|
0.744
|
1.515
|
2.485
|
4.799
|
8.460
|
13.222
|
19.133
|
|
600
|
59
|
0.417
|
0.822
|
1.662
|
2.729
|
5.260
|
9.240
|
14.460
|
20.921
|
|
700
|
69
|
0.455
|
0.892
|
1.785
|
2.937
|
5.645
|
9.916
|
15.542
|
22.409
|
|
800
|
79
|
0.488
|
0.956
|
1.889
|
3.116
|
5.965
|
10.512
|
16.505
|
23.647
|
