|
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
|
Kv(m3=／h)
|
CV(U.S)
|
CV(U.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
|
|
配管法蘭
|
公稱壓力
|
常規(guī)產(chǎn)品型號
|
||||||
|
JB/T74-90
GB9112-9124、HG20592-20614 |
PN1.0MPa
|
H71H-10C
|
H71W10P
|
H71W10P8
|
H71W10P3
|
H71W10R
|
H71W10R8
|
H71W10R3
|
|
PN1.6MPa
|
H71H-16C
|
H71H-16P
|
H71H-16P8
|
H71H-16P3
|
H71H-16R
|
H71H-16R8
|
H71H-16R3
|
|
|
PN2.5MPa
|
H71H-25
|
H71H-25P
|
H71H-25P8
|
H71H-25P3
|
H71H-25R
|
H71H-25R8
|
H71H-25R3
|
|
|
PN4.0MPa
|
H71H-40
|
H71H-40P
|
H71H-40P8
|
H71H-40P3
|
H71H-40R
|
H71H-40R8
|
H71H-40R3
|
|
|
PN6.3MPa
|
H71H-63
|
H71H-63P
|
H71H-63P8
|
H71H-63P3
|
H71H-63R
|
H71H-63R8
|
H71H-63R3
|
|
|
PN10.0MPa
|
H71H-100
|
H71H-100P
|
H71H-100P8
|
H71H-100P3
|
H71H-100R
|
H71H-100R8
|
H71H-100R3
|
|
|
PN16.0MPa
|
H71H-160
|
H71H-160P
|
H71H-160P8
|
H71H-160P3
|
H71H-160R
|
H71H-160R8
|
H71H-160R3
|
|
|
CB/T9112-9124、HG20615-20635、SH3406
|
PN2.0MPa
|
H71H-20C
|
-
|
H71H-20P8
|
H71H-20P3
|
-
|
H71H-20R8
|
H71H-20R3
|
|
PN5.0MPa
|
H71H-50
|
-
|
H71H-50P8
|
H71H-50P3
|
-
|
H71H-50R8
|
H71H-50R3
|
|
|
PN11.0MPa
|
H71H-110
|
-
|
H71H-110P8
|
H71H-110P3
|
-
|
H71H-110R8
|
H71H-110R3
|
|
|
PN15.0MPa
|
H71H-150
|
-
|
H71H-150P8
|
H71H-150P3
|
-
|
H71H-150R8
|
H71H-150R3
|
|
|
ANSIB16.5
|
Class150
|
H71H-A1C
|
-
|
H71H-A1CP8
|
H71H-A1P3
|
-
|
H71H-A1R8
|
H71H-A1R3
|
|
Class300
|
H71H-A3
|
-
|
H71H-A3P8
|
H71H-A3P3
|
-
|
H71H-A3R8
|
H71H-A3R3
|
|
|
Class600
|
H71H-A6
|
-
|
H71H-A6P8
|
H71H-A6P3
|
-
|
H71H-A6R8
|
H71H-A6R3
|
|
|
Class900
|
H71H-A9
|
-
|
H71H-A9P8
|
H71H-A9P3
|
-
|
H71H-A9R8
|
H71H-A9R3
|
|
|
主要
零件 材料 |
閥體
|
WCB(A105)
|
ZG1Cr18Ni9Ti
|
CF8(304)
|
CF3(304L)
|
ZG1Cr18Ni12Mo2Ti
|
CF8M(316)
|
CF3M(316L)
|
|
閥瓣
|
2Cr13
|
1Cr18Ni9Ti
|
0Cr18Ni9
|
00Cr19Ni10
|
1Cr18Ni12TMo2i
|
00Cr17Ni12Mo2
|
00Cr17Ni14Mo2
|
|
|
壓圈
|
2Cr13
|
1Cr18Ni9Ti
|
0Cr18Ni9
|
00Cr19Ni10
|
1Cr18Ni12TMo2i
|
00Cr17Ni12Mo2
|
00Cr17Ni14Mo2
|
|
|
彈簧
|
0Cr18Ni9
|
0Cr18Ni9
|
0Cr18Ni9
|
00Cr19Ni10
|
1Cr18Ni12TMo2i
|
00Cr17Ni12Mo2
|
00Cr17Ni14Mo2
|
|
|
適用工況
|
適月介質(zhì)
|
水、蒸汽、
油品等 |
硝酸等腐蝕性介質(zhì)
|
強氧化性介質(zhì)
|
醋酸等腐蝕性介質(zhì)
|
屎素等腐
蝕性介質(zhì) |
||
|
適用溫度（℃）
|
-29～425
|
-196～540
|
-196～425
|
-196～540
|
-196～455
|
|||
|
注：本表為常規(guī)對夾式止回閥的型號編制、主要零件材料及適用工況，其他要求及其型號編制參見對夾式止回閥型號編制方法。
|
||||||||
|
公稱壓女
PN MPa |
公稱通徑
DN mm |
尺寸(mm)
|
重量
(Kg) |
配管法蘭(供參考)
|
||||||||
|
L
|
D
|
D2
|
D3
|
D4
|
D5
|
螺栓孔中心
圓直徑Dl |
螺栓
數(shù)量 |
螺栓直徑d
|
螺栓
長度Ll |
|||
|
PN1.0MPa
PN1.6MPa |
15
|
16
|
52
|
15
|
24
|
31
|
40
|
0.12
|
65
|
4
|
M12
|
75
|
|
20
|
19
|
62
|
19
|
30
|
40
|
50
|
0.24
|
75
|
4
|
M12
|
90
|
|
|
25
|
22
|
70
|
24
|
36
|
47
|
58
|
0.34
|
85
|
4
|
M12
|
90
|
|
|
32
|
28
|
83
|
31
|
46
|
56
|
68
|
0.53
|
100
|
4
|
M16
|
100
|
|
|
40
|
31.5
|
93
|
39
|
55
|
66
|
78
|
0.80
|
110
|
4
|
M16
|
105
|
|
|
50
|
40
|
108
|
48
|
65
|
78
|
90
|
1.2
|
125
|
4
|
M16
|
125
|
|
|
65
|
46
|
128
|
62
|
80
|
95
|
110
|
1.8
|
145
|
4
|
M16
|
130
|
|
|
80
|
50
|
142
|
76
|
96
|
110
|
125
|
2.2
|
160
|
8
|
M16
|
135
|
|
|
100
|
65
|
162
|
95
|
115
|
135
|
150
|
3.4
|
180
|
8
|
M16
|
150
|
|
|
125
|
90
|
192
|
110
|
125
|
132
|
-
|
9.0
|
210
|
8
|
M16
|
180
|
|
|
150
|
106
|
218
|
127
|
150
|
158
|
-
|
14
|
240
|
8
|
M20
|
210
|
|
|
PN1.0MPa
|
200
|
140
|
273
|
165
|
200
|
208
|
-
|
24
|
295
|
8
|
M20
|
240
|
|
PN1.6MPa
|
200
|
140
|
273
|
165
|
200
|
208
|
-
|
24
|
295
|
12
|
M20
|
240
|
|
PN2.5MPa
|
15
|
16
|
52
|
15
|
24
|
31
|
40
|
0.12
|
65
|
4
|
M12
|
80
|
|
20
|
19
|
62
|
19
|
30
|
40
|
50
|
0.24
|
75
|
4
|
M12
|
90
|
|
|
25
|
22
|
72
|
24
|
36
|
47
|
58
|
0.34
|
85
|
4
|
M12
|
90
|
|
|
32
|
28
|
83
|
31
|
46
|
56
|
68
|
0.53
|
100
|
4
|
M16
|
110
|
|
|
40
|
31.5
|
93
|
39
|
55
|
66
|
78
|
0.80
|
110
|
4
|
M16
|
115
|
|
|
50
|
40
|
108
|
48
|
65
|
78
|
90
|
1.2
|
125
|
4
|
M16
|
125
|
|
|
65
|
46
|
128
|
62
|
80
|
95
|
110
|
1.8
|
145
|
8
|
M16
|
135
|
|
|
80
|
50
|
142
|
76
|
96
|
110
|
128
|
2.2
|
160
|
8
|
M16
|
145
|
|
|
100
|
60
|
168
|
95
|
115
|
135
|
150
|
3.8
|
190
|
8
|
M20
|
160
|
|
|
125
|
90
|
194
|
110
|
125
|
132
|
-
|
9.2
|
220
|
8
|
M24
|
205
|
|
|
150
|
106
|
224
|
127
|
150
|
158
|
-
|
15
|
250
|
8
|
M24
|
225
|
|
|
200
|
140
|
284
|
165
|
200
|
208
|
-
|
26
|
310
|
12
|
M24
|
260
|
|
|
PN4.0MPa
|
15
|
16
|
52
|
15
|
24
|
31
|
40
|
0.12
|
65
|
4
|
M12
|
80
|
|
20
|
19
|
62
|
19
|
30
|
40
|
50
|
0.24
|
75
|
4
|
M12
|
90
|
|
|
25
|
22
|
72
|
24
|
36
|
47
|
58
|
0.34
|
85
|
4
|
M12
|
90
|
|
|
32
|
28
|
83
|
31
|
46
|
56
|
68
|
0.53
|
100
|
4
|
M16
|
110
|
|
|
40
|
31.5
|
93
|
39
|
55
|
66
|
78
|
0.80
|
110
|
4
|
M16
|
115
|
|
|
50
|
40
|
108
|
48
|
65
|
78
|
90
|
1.2
|
125
|
4
|
M16
|
125
|
|
|
65
|
46
|
128
|
62
|
80
|
95
|
110
|
1.8
|
145
|
8
|
M16
|
135
|
|
|
80
|
50
|
142
|
76
|
96
|
110
|
128
|
2.2
|
160
|
8
|
M16
|
145
|
|
|
100
|
60
|
168
|
95
|
115
|
135
|
150
|
3.8
|
190
|
8
|
M20
|
160
|
|
|
125
|
90
|
194
|
110
|
125
|
132
|
-
|
9.2
|
220
|
8
|
M24
|
205
|
|
|
150
|
106
|
224
|
127
|
150
|
158
|
-
|
15
|
250
|
8
|
M24
|
225
|
|
|
200
|
140
|
291
|
165
|
200
|
208
|
-
|
28
|
320
|
12
|
M27
|
230
|
|
