偏心半球閥的特點(diǎn)偏心半球閥的特點(diǎn)之一啟閉無磨擦.由于采用偏心結(jié)構(gòu).閥門在關(guān)閉的過程中.球體逐漸靠近閥座,到關(guān)閉位置接觸;在開啟時(shí)球體離開密封位置即可脫開.開啟扭矩小Biased half ball valve characteristic?Biased one of half ball valve characteristics opens shuts, because uses the eccentric structure, the valve? in the shuting down process, the spheroid gradually approaches the valve seat, completely contacts to the off-position;
Biased one of half ball valve characteristics opens shuts, because uses the eccentric structure, the valve in the shuting down process, the spheroid gradually approaches the valve seat, completely contacts to the off-position; When opening the spheroid leaves seals the position the completely to withdraw, opens the torque to be small; The second characteristic is the packing surface may realize from cleanly, when the spheroid leaves the valve seat, the medium may flush away in the packing surface the agglomeration, regarding is easy to Cfystallize the medium, the spheroid may excise the medium crystallization in the closure process to achieve the seal the goal, avoided other valves being unable the switch malpractice;The third character-istic is the seal close, the spheraid, the valve seat are the bimetal, adopts thedifferent craft, the packing surface may the group synthesize the anticarrosion, be wear-resisting and so on each kind of type, satisfies the different operating made the demand, the seal is the spherical surface, depends on two-dimensional biased realizaton zero to divulge.
The biased half ball valve when circles the center of rotation A rotation by the valve lever impetus spheroid, the spheroid by B moves C, this time relative valve center O, from B to the C path is a cam shape bias, enters the valve seat toward un-der to cause the valve closure maintenace seal. This valve because has above cam principle, the valve closure from opens to the closure process in, affects the strength gradually increases on the valve seat, namely the shutting down surface and the valve seat by completely are separated from to the contact, and gradually increases the seal to compare the pressure, until completely seals, vice versa. This greatly im-proved the former bll valve seal condition and the seal effect, suits the high tempera-ture high pressure and is easy to crystallize wears the serious situation use.
The our company half ball valve product divides into according to the use: the pipeline valve, the material thick liquid special-prupose valve, the fuel gas spe-cial-purpose valve, the petroleum chemical industry special-purpose valve, the pow-dared coal spurt blows the special-purpose valve six big series. In the petroleum, the chemical industry, the metallurgy, the electric power, the fuel gas, the platoon ash,spurt profession and so on powdered coal is the gate valve, the cut-off valve, the Y valve, the ball valve renewal product.
國標(biāo)連接及外形尺寸Main conn ection and externaldimensions(mm)
公稱通徑
(DN)
1.0MPa(GB9113-2000法蘭Flange)
公稱通徑
(DN)
4.0MPa(GB9113-2000法蘭Flange)
L
D
D1
D2
b
f
n-d
H
L
D
D1
D2
D3
f1
b
f
n-d
H
50
124
165
125
99
20
2
4-18
200
50
124
165
125
99
88
3
20
4
4-18
200
65
145
185
145
118
20
2
4-18
215
65
145
185
145
118
110
3
22
4
8-18
215
80
165
200
165
132
20
2
8-18
235
80
165
200
165
132
121
3
24
4
8-18
235
100
200
220
180
156
22
2
8-18
250
100
200
235
190
156
150
3.5
24
4.5
8-22
250
125
254
250
210
184
22
2
8-18
280
125
254
270
220
184
176
3.5
26
4.5
8-26
280
150
267
285
240
211
24
2
8-22
300
150
267
300
250
211
204
3.5
28
4.5
8-26
300
200
292
40
295
266
24
2
8-22
370
200
292
375
320
284
260
3.5
34
4.5
12-30
370
250
330
395
350
319
26
2
12-22
420
250
330
450
385
345
313
3.5
38
4.5
12-33
420
300
390
445
400
370
26
2
12-22
450
300
390
515
450
409
364
3.5
42
4.5
16-33
450
350
468
505
460
429
26
2
16-22
520
350
468
580
510
465
422
4
46
5
16-36
520
400
526
565
515
480
26
2
16-26
570
400
526
660
585
535
474
4
50
5
16-39
570
450
610
615
565
530
28
2
20-26
640
450
610
685
610
560
524
4
50
5
20-39
640
500
610
670
620
582
28
2
20-26
640
500
610
755
670
615
576
4
52
5
20-42
640
600
762
780
725
682
34
2
20-30
720
600
762
890
795
735
675
4
60
5
20-48
720
700
889
895
840
794
34
5
24-30
800
700
公稱通徑
(DN)
1.6MPa(GB9113-2000法蘭Flange)
公稱通徑
(DN)
6.4MPa(GB9113-2000法蘭Flange)
L
D
D1
D2
b
f
n-d
H
L
D
D1
D2
D3
f1
b
f
n-d
H
50
124
165
125
99
20
2
4-18
200
50
124
180
135
105
88
4
26
3
4-23
200
65
145
185
145
118
20
2
4-18
215
65
145
205
160
130
110
4
28
3
8-23
215
80
165
200
165
132
20
2
8-18
235
80
165
215
170
140
121
4
30
3
8-23
235
100
200
220
180
156
22
2
8-18
250
100
200
250
200
168
150
4.5
32
3
8-26
250
125
254
250
210
184
22
2
8-18
280
125
254
295
240
202
176
4.5
36
3
8-30
280
150
267
285
240
211
24
2
8-22
300
150
267
345
280
240
204
4.5
38
3
8-34
300
200
292
340
295
266
24
2
12-22
370
200
292
405
345
300
260
4.5
44
3
12-36
370
250
330
405
350
319
26
2
12-26
420
250
330
470
400
352
313
4.5
48
3
12-36
420
300
390
460
400
370
28
2
12-26
450
300
390
530
460
412
364
4.5
54
4
16-36
450
350
468
520
460
429
30
2
16-26
520
350
468
600
525
475
422
5
60
4
16-41
520
400
526
580
515
480
32
2
16-30
570
400
526
670
585
525
474
5
66
4
16-42
570
450
610
640
565
530
34
2
20-30
640
450
-
-
-
-
-
-
-
-
-
-
500
610
715
620
582
36
2
20-33
640
500
610
800
705
640
576
5
70
4
20-48
640
600
762
840
725
682
38
2
20-36
720
600
762
930
820
750
675
6
76
5
20-58
720
700
889
910
840
794
40
5
24-36
800
700
公稱通徑
(DN)
2.5MPa(GB9113-2000法蘭Flange)
公稱通徑
(DN)
10.0MPa(GB9113-2000法蘭Flange)
L
D
D1
D2
b
f
n-d
H
L
D
D1
D2
D3
f1
b
f
n-d
H
50
124
165
125
99
20
2
4-18
200
50
124
195
145
112
88
4
28
3
4-26
200
65
145
185
145
118
22
2
8-18
215
65
145
220
170
138
110
4
32
3
8-26
215
80
165
200
160
132
24
2
8-18
235
80
165
230
180
148
121
4
34
3
8-26
235
100
200
235
190
156
24
2
8-22
250
100
200
265
210
172
150
4.5
38
3
8-30
250
125
254
270
220
184
26
2
8-26
280
125
254
315
250
210
176
4.5
42
3
8-34
280
150
267
300
250
211
28
2
8-26
300
150
267
355
290
250
204
4.5
46
3
12-34
300
200
292
360
310
274
30
2
12-26
370
200
292
430
360
312
260
4.5
54
3
12-36
370
250
330
425
370
330
32
2
12-30
420
250
330
506
430
382
313
4.5
60
3
12-42
420
300
390
485
430
389
34
2
16-30
450
300
390
585
500
442
364
4.5
70
4
16-42
450
350
468
555
490
448
38
2
16-33
520
350
468
655
560
492
422
5
76
4
16-48
520
400
526
620
550
503
40
2
16-36
570
400
526
715
620
558
474
5
80
4
16-48
570
450
610
670
600
548
42
2
20-36
640
450
500
610
730
660
609
44
2
20-36
640
500
600
762
845
770
720
46
2
20-39
720
600
美標(biāo)連接及外形尺寸Main conn ection and externaldimensions(mm)