截止阀的启闭件是塞形的阀瓣,密封面呈平面或锥面,阀瓣沿流体的中心线作直线运动。阀杆的运动形式,有升降杆式(阀杆升降,手轮不升降),也有升降旋转杆式(手轮与阀杆一起旋转升降,螺母设在阀体上)。截止阀只适用于全开和全关,不允许作调节和节流。
该阀门工作介质为水,蒸汽或空气的管路上,作为启闭装置;尤其适用于火电厂汽机冷凝和真空负压系统,起真空隔离密封作用.
主要尺寸及重量
公称通径DN(mm)
|
尺寸(mm)
|
重量(kg)
|
L
|
D1
|
D2
|
H
|
D0
|
DS/J61H-25(40)
|
10
|
130
|
10
|
28
|
272
|
120
|
5
|
15
|
130
|
15
|
41
|
272
|
120
|
6
|
20
|
150
|
20
|
44
|
280
|
120
|
6
|
25
|
160
|
25
|
52
|
332
|
160
|
8
|
32
|
190
|
32
|
64
|
342
|
160
|
10
|
40
|
200
|
40
|
75
|
395
|
200
|
16
|
50
|
230
|
50
|
75
|
431
|
240
|
23
|
65
|
290
|
65
|
103
|
457
|
280
|
32
|
80
|
310
|
80
|
116
|
505
|
320
|
43
|
100
|
350
|
100
|
140
|
549
|
360
|
58
|
125
|
400
|
125
|
171
|
621
|
400
|
94
|
150
|
480
|
150
|
198
|
705
|
400
|
119
|
200
|
600
|
200
|
254
|
828
|
400
|
165
|
主要尺寸及重量
公称通径DN(mm)
|
尺寸(mm)
|
重量(kg)
|
L
|
D
|
D1
|
D2
|
b
|
Z-φd
|
H
|
D0
|
DS/J41H-25
|
10
|
130
|
90
|
60
|
40
|
16
|
4-14
|
272
|
120
|
6
|
15
|
130
|
95
|
65
|
45
|
16
|
4-14
|
272
|
120
|
6
|
20
|
150
|
105
|
75
|
55
|
16
|
4-14
|
280
|
120
|
6
|
25
|
160
|
115
|
85
|
65
|
16
|
4-14
|
332
|
160
|
10
|
32
|
190
|
135
|
100
|
78
|
18
|
4-18
|
342
|
160
|
11
|
40
|
200
|
145
|
110
|
85
|
18
|
4-18
|
395
|
200
|
17
|
50
|
230
|
160
|
125
|
100
|
20
|
4-18
|
431
|
240
|
24
|
65
|
290
|
180
|
145
|
120
|
22
|
8-18
|
457
|
280
|
33
|
80
|
310
|
195
|
160
|
135
|
22
|
8-18
|
505
|
320
|
47
|
100
|
350
|
230
|
190
|
160
|
24
|
8-23
|
549
|
360
|
62
|
125
|
400
|
270
|
220
|
188
|
28
|
8-25
|
621
|
400
|
96
|
150
|
480
|
300
|
250
|
218
|
30
|
8-25
|
703
|
400
|
128
|
200
|
600
|
360
|
310
|
278
|
34
|
12-25
|
828
|
400
|
168
|
公称通径DN(mm)
|
尺寸(mm)
|
重量(kg)
|
L
|
D
|
D1
|
D2
|
b
|
Z-φd
|
D6
|
f
|
H
|
D0
|
DS/J41H-40
|
10
|
130
|
90
|
60
|
40
|
16
|
4-14
|
35
|
4
|
272
|
120
|
6
|
15
|
130
|
95
|
65
|
45
|
16
|
4-14
|
40
|
4
|
272
|
120
|
7
|
20
|
150
|
105
|
75
|
55
|
16
|
4-14
|
51
|
4
|
280
|
120
|
8
|
25
|
160
|
115
|
85
|
65
|
16
|
4-14
|
58
|
4
|
332
|
160
|
10
|
32
|
190
|
135
|
100
|
78
|
18
|
4-18
|
66
|
4
|
342
|
160
|
11
|
40
|
200
|
145
|
110
|
85
|
18
|
4-18
|
76
|
4
|
395
|
200
|
17
|
50
|
230
|
160
|
125
|
100
|
20
|
4-18
|
88
|
4
|
437
|
246
|
25
|
65
|
290
|
180
|
145
|
120
|
22
|
8-18
|
110
|
4
|
457
|
280
|
34
|
80
|
310
|
195
|
160
|
135
|
22
|
8-18
|
121
|
4
|
505
|
320
|
47
|
100
|
350
|
230
|
190
|
160
|
24
|
8-23
|
150
|
4.5
|
549
|
360
|
62
|
125
|
400
|
270
|
220
|
188
|
28
|
8-25
|
176
|
4.5
|
621
|
400
|
96
|
150
|
480
|
300
|
250
|
218
|
30
|
8-25
|
204
|
4.5
|
705
|
400
|
128
|
200
|
600
|
360
|
310
|
278
|
34
|
12-25
|
|
|
|
|
|
|