长荣阀门 >>
阀门\截止阀\
BJ41W保温截止阀
产品概况
保温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）。纹管截止阀只适用于全开和全关，不允许作调节和节流。
保温截止阀开启时，阀瓣的开启高度，为公称直径的25%～30%时，流量已达到最大，表示阀门已达全开位置。所以截止阀的全开位置，应由阀瓣的行程来决定。
液化气截止阀的种类按阀杆螺纹的位置分有外螺纹式、内螺纹式。按介质的流向分，有直通式、直流式和角式。截止阀按密封形式分，有填料密封截止阀和波纹管密封截止阀。
产品性能规范
|
型号
|
公称压力PN(Mpa)
|
试验压力
|
适用温度
|
适用介质
|
保温套压力(Mpa)
|
|
壳体
|
密封
|
|
../cn/../cn/bj41W-16P、R、C
|
1.6
|
2.4
|
1.8
|
≤350
|
硝酸类
|
≤1.0
|
|
../cn/../cn/bj41W-25P、R、C
|
2.5
|
3.8
|
2.8
|
≤350
|
硝酸类
|
≤1.0
|
I型主要外形尺寸和连接尺寸(II型法兰大一级)
|
型号
|
公称通径DNmm
|
尺寸
|
|
L
|
D
|
D1
|
D2
|
B-f
|
Z-Φd
|
H
|
Do
|
2-G
|
|
|
W
|
|
P
|
|
../cn/../cn/bj41
|
|
-16
|
R
|
|
|
H
|
|
C
|
|
15
|
130
|
95
|
65
|
45
|
16-2
|
4-14
|
170
|
170
|
3/8
|
|
20
|
150
|
105
|
75
|
55
|
16-2
|
4-14
|
190
|
190
|
3/8
|
|
25
|
160
|
115
|
85
|
65
|
16-2
|
4-14
|
205
|
205
|
3/8
|
|
32
|
180
|
135
|
100
|
78
|
18-2
|
4-18
|
270
|
270
|
1/2
|
|
40
|
200
|
145
|
110
|
85
|
18-3
|
4-18
|
310
|
310
|
1/2
|
|
50
|
230
|
160
|
125
|
100
|
18-3
|
4-18
|
358
|
358
|
1/2
|
|
65
|
290
|
180
|
145
|
120
|
18-3
|
4-18
|
373
|
373
|
1/2
|
|
80
|
310
|
195
|
160
|
135
|
20-3
|
8-18
|
435
|
435
|
1/2
|
|
100
|
350
|
215
|
180
|
155
|
20-3
|
8-18
|
500
|
500
|
1/2
|
|
125
|
400
|
245
|
210
|
185
|
22-3
|
8-18
|
614
|
614
|
1/2
|
|
150
|
480
|
280
|
240
|
210
|
24-3
|
8-23
|
674
|
674
|
1/2
|
|
200
|
600
|
335
|
295
|
264
|
26-3
|
12-23
|
818
|
818
|
1/2
|
|
250
|
730
|
405
|
355
|
320
|
30-3
|
12-25
|
949
|
969
|
1/2
|
|
型号
|
公称通径DNmm
|
尺寸
|
|
L
|
D
|
D1
|
D2
|
B-f
|
Z-Φd
|
H
|
Do
|
2-G
|
|
|
W
|
|
P
|
|
../cn/../cn/bj41
|
|
-25
|
R
|
|
|
H
|
|
C
|
|
15
|
130
|
95
|
65
|
45
|
16-2
|
4-14
|
233
|
120
|
3/8
|
|
20
|
150
|
105
|
75
|
55
|
16-2
|
4-14
|
275
|
140
|
3/8
|
|
25
|
160
|
115
|
85
|
65
|
16-2
|
4-14
|
285
|
160
|
3/8
|
|
32
|
180
|
135
|
100
|
78
|
18-2
|
4-18
|
302
|
180
|
1/2
|
|
40
|
200
|
145
|
110
|
85
|
18-3
|
4-18
|
355
|
200
|
1/2
|
|
50
|
230
|
160
|
125
|
100
|
20-3
|
4-18
|
362
|
240
|
1/2
|
|
65
|
290
|
180
|
145
|
120
|
22-3
|
8-18
|
400
|
280
|
1/2
|
|
80
|
310
|
195
|
160
|
135
|
22-3
|
8-18
|
430
|
320
|
1/2
|
|
100
|
350
|
230
|
190
|
160
|
24-3
|
8-18
|
465
|
360
|
1/2
|
|
125
|
400
|
270
|
220
|
188
|
28-3
|
8-23
|
550
|
400
|
1/2
|
|
150
|
480
|
300
|
250
|
218
|
30-3
|
8-25
|
700
|
400
|
1/2
|
|
200
|
600
|
360
|
310
|
278
|
34-3
|
12-25
|
780
|
450
|
1/2
|
|
250
|
730
|
425
|
370
|
335
|
36-3
|
12-30
|
900
|
550
|
1/2
|
|
型号
|
公称通径DNmm
|
尺寸
|
|
L
|
D
|
D1
|
D2
|
D6
|
B-f
|
Z-Φd
|
H
|
2-G
|
|
|
W
|
|
P
|
|
../cn/../cn/bj41
|
|
-40
|
R
|
|
|
H
|
|
C
|
|
15
|
130
|
95
|
65
|
45
|
40
|
16-2
|
4-14
|
233
|
3/8
|
|
20
|
150
|
105
|
75
|
55
|
51
|
16-2
|
4-14
|
275
|
3/8
|
|
25
|
160
|
115
|
85
|
65
|
58
|
16-2
|
4-14
|
285
|
3/8
|
|
32
|
180
|
135
|
100
|
78
|
66
|
18-2
|
4-18
|
302
|
1/2
|
|
40
|
200
|
145
|
110
|
85
|
76
|
18-3
|
4-18
|
355
|
1/2
|
|
50
|
230
|
160
|
125
|
100
|
88
|
20-3
|
4-18
|
370
|
1/2
|
|
65
|
290
|
180
|
145
|
120
|
110
|
22-3
|
8-18
|
408
|
1/2
|
|
80
|
310
|
195
|
160
|
135
|
121
|
22-3
|
8-18
|
436
|
1/2
|
|
100
|
350
|
230
|
190
|
160
|
150
|
24-3
|
8-23
|
475
|
1/2
|
|
125
|
400
|
270
|
220
|
188
|
176
|
28-3
|
8-25
|
558
|
1/2
|
|
150
|
480
|
300
|
250
|
218
|
204
|
30-3
|
8-25
|
720
|
1/2
|
|
200
|
600
|
375
|
320
|
282
|
260
|
38-3
|
12-30
|
800
|
1/2
|
|
型号
|
公称通径DNmm
|
尺寸
|
|
L
|
D
|
D1
|
D2
|
D6
|
B-f
|
Z-Φd
|
H
|
2-G
|
|
|
W
|
|
P
|
|
../cn/../cn/bj41
|
|
-64
|
R
|
|
|
H
|
|
C
|
|
15
|
170
|
105
|
75
|
55
|
55
|
18-2
|
4-14
|
240
|
3/8
|
|
20
|
190
|
125
|
90
|
68
|
68
|
20-2
|
4-14
|
280
|
3/8
|
|
25
|
210
|
135
|
100
|
78
|
78
|
22-2
|
4-14
|
290
|
3/8
|
|
32
|
230
|
150
|
110
|
82
|
82
|
24-2
|
4-18
|
325
|
1/2
|
|
40
|
260
|
165
|
125
|
95
|
95
|
24-3
|
4-18
|
360
|
1/2
|
|
50
|
300
|
175
|
135
|
105
|
105
|
26-3
|
4-18
|
410
|
1/2
|
|
65
|
340
|
200
|
160
|
130
|
130
|
28-3
|
8-18
|
430
|
1/2
|
|
80
|
380
|
210
|
170
|
140
|
140
|
30-3
|
8-18
|
465
|
1/2
|
|
100
|
430
|
250
|
200
|
168
|
168
|
32-3
|
8-18
|
537
|
1/2
|
|
125
|
500
|
295
|
240
|
202
|
202
|
36-3
|
8-23
|
630
|
1/2
|
|
150
|
550
|
340
|
280
|
240
|
240
|
38-3
|
8-25
|
790
|
1/2
|
|
200
|
650
|
405
|
345
|
300
|
300
|
44-3
|
12-25
|
910
|
1/2
|
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