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D343H flange three-eccentric hard-seal butterfly valve
Product Name:
D343H flange three-eccentric hard-seal butterfly valve
Description:

法兰三偏心硬密封蝶阀 D343H

概述;

·产品结构

多层次硬密封蝶阀系列产品,系我公司新开发的长寿命、节能型蝶阀。其结构采用三维偏心原理设计,阀座采用硬软密封兼容的多层
次结构,加工精湛,工艺先进。本产品由阀体、蝶板、多层次阀座、阀杆、传动机构等主要部件组成。

·特点

由于本产品蝶阀采用的是三维偏心原理设计,使密封面的空间运动轨迹达到理想化,密封面相互之间无磨擦、无干涉,加之密封材料选择得当,从而使蝶阀的密封性、耐腐蚀性、耐高温性和耐磨性等得到了可靠的保证。其主要特点如下:

1、开启力矩小,灵活方便,省力节能:
2、三维偏心结构,使蝶板越关越紧,其密封性能可靠,达到无泄漏:
3、耐高压、耐腐蚀、耐磨损、使用寿命长等。

·主要技术参考数

公称通径

DN(mm)

50-1600

公称压力

PN(MPa)

0.6

1.O

1.6

2.5

4.0

试验压力

(MPa)

强度试验

0.9

1.5

2.4

3.75

6.0

密封试验Seal test

0.66

1.1

1.76

2.75

4.4

气密封试验Ai rTest

0.6

0.6

0.6

0.6

0.6

适用介质

水、蒸气、油品、酸类腐蚀性等。

适用温度

碳钢:-29%-425% 不锈钢:-40%-600%

· 主要零件的材质

零件名称

材料

阀体

铸铁、铸钢、不锈钢、铬钼钢、合金钢

蝶板

铸钢、合金钢(镀硬铬)、不锈钢、铬钼钢

阀座密封圈

不锈钢、多层次、聚内脂、抗磨材料

阀杆

2Crl3、1Crl3不锈钢、铬钼钢2Crl3,1Crl3

填料

柔性石墨

Dd3/643/9/H/Y/F-2.5/6/10C.R.V系列法兰式多层次金属硬密封蝶阀

公称通径DN
结构长度
(标准值)
外形尺寸(参考值)
连接尺寸(标准值)
参考重量
L
H
Dd343H
Dd943H
PN0.25MPa
PN0.6MPa
PN1.0MPa
毫米
英寸
H1
A1
B1
H3
A3
B3
D
D1
Z-d
D
D1
Z-d
D
D1
Z-d
50
2
108
150
112
350
180
200
530
250
255
140
110
4-14
140
110
4-14
165
125
4-18
17
65
21/2
112
170
115
370
180
200
530
250
255
160
130
4-14
160
130
4-14
185
145
4-18
20
80
3
114
180
120
380
180
200
565
250
255
190
150
4-18
190
150
4-18
200
160
8-18
23
100
4
127
190
138
420
180
200
600
250
255
210
170
4-18
210
170
4-18
220
180
8-18
25
125
5
140
200
164
460
180
200
640
250
255
240
200
8-18
240
200
8-18
250
210
8-18
40
150
6
140
210
175
555
270
280
705
300
315
265
225
8-18
265
225
8-18
285
240
8-22
47
200
8
152
230
200
760
400
425
775
300
315
320
280
8-18
320
280
8-18
340
295
8-22
60
250
10
165
250
243
830
400
425
945
300
315
375
335
12-18
375
335
12-18
395
350
12-22
95
300
12
178
270
250
895
450
560
1070
300
315
440
395
12-22
440
395
12-22
445
400
12-22
124
350
14
190
290
280
950
450
560
1140
300
315
490
445
12-22
490
445
12-22
505
460
16-22
181
400
16
216
310
305
1190
535
580
1210
300
315
450
495
16-22
540
495
16-22
565
515
16-26
260
450
18
222
330
350
1255
535
580
1335
575
714
595
550
16-22
595
550
16-22
615
565
20-26
338
500
20
229
350
380
1305
535
580
1415
575
714
645
600
16-22
645
600
16-22
670
620
20-26
360
600
24
267
390
445
1340
570
660
1605
656
810
755
705
20-26
755
705
20-26
780
725
20-30
540
700
28
292
430
480
1520
750
550
1844
656
810
860
810
24-26
860
810
24-26
895
840
24-30
580
800
32
318
470
530
1710
750
550
2040
656
810
975
920
24-30
975
920
24-30
1015
950
24-33
845
900
36
330
510
580
1810
750
550
2255
785
863
1075
1020
24-30
1075
1020
24-30
1115
1050
28-33
1050
1000
40
410
550
650
1960
900
750
2380
785
863
1175
1120
28-30
1175
1120
28-30
1230
1160
28-36
1500
1200
48
470
630
760
2250
1000
925
2640
785
863
1375
1320
32-30
1405
1340
32-33
1455
1380
32-39
2000
1400
56
530
710
850
2435
1000
925
2886
1575
1520
36-30
1630
1650
36-36
1675
1590
36-42
3000
1600
64
600
790
1030
2780
1000
925
3156
1785
1730
40-30
1830
1760
40-36
1915
1820
40-48
4700
1800
72
670
870
1230
3020
1100
980
3421
1985
1930
44-30
2045
1970
44-39
2115
2020
44-48
6500
2000
80
760
950
1350
3270
1100
980
3685
2185
2130
48-30
2265
2180
48-42
2325
2230
48-48
8700


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