High temperature adjustable metal sealed butterfly valve
Performance and feature
Used for petroleum, chemical industry, metallurgy, electric power, municipal works, water supply and drainage etc. trades to act as stop and adjustment.
Use a three-dimensional eccentric sealing structure, separated once the sealing is opened and sealed once closed.
Floatable sealing structure. Under the working condition of high temperature cold-state, the seal ring can properly adjust the position of itself along with the pushing force produced when the butterfly plate is closed to get the plate completely engaged with the seat ring and an uniform specific pressure of sealing so as to reach null leak.
Structural drawing of product
Out-form dimension
DN mm
L1
L2
L3
Dn
d1
H
H0
Model of actuator
Power (KW)
Approx. weight (Kg)
L1
L2
L3
80
49
114
180
92
85
220
90
QT2
0.04
10.5
21
49
100
56
127
190
114
105
250
100
QT2
0.06
15
26.5
49
125
64
140
200
138
130
270
113
QT2
0.06
18
31.5
49
150
76
140
210
159
152
320
150
QT2
0.37
25
43.6
80
200
89
152
230
219
207
340
200
DZW10
0.55
42
63
100
250
114
165
250
274
258
410
231
DZW10
0.55
65
80
121
300
114
178
270
325
313
450
261
DZW20
0.55
69.3
103
159
350
127
190
290
377
365
490
298
DZW20
0.55
91.7
128
222
400
140
216
310
426
414
518
331
DZW20
0.55
102
150
237
450
152
222
330
478
466
562
369
DZW30
0.75
126
186
271
500
152
229
350
529
517
642
404
DZW30
0.75
160
236
300
600
154
267
390
630
614
710
473
DZW45
1.1
243
357
381
700
165
292
430
720
702
815
538
DZW60
1.5
369
530
651
800
190
318
470
820
802
965
615
DZW60
1.5
498
854
792
900
203
330
510
920
902
1015
700
DZW120
3.0
642
1103
1034
1000
216
300
550
1020
1002
1140
720
DZW120
3.0
851
1363
1334
1200
254
350
630
1220
1200
1350
850
DZW120
3.0
1107
1558
1953
1400
390
710
1420
1400
1470
965
DZW120
3.0
2396
2937
1600
420
790
1620
1600
1630
1092
DZW250
5.5
3748
4276
1800
490
820
1820
1800
1750
1216
DZW250
5.5
4491
5150
2000
540
870
2020
2000
1850
1332
DZW500
10
6154
6460
2200
600
950
2220
2200
1980
1452
DZW500
10
8031
9100
2400
660
1000
2420
2400
2120
1578
DZW500
10
10048
10710
2600
720
1100
2620
2600
2230
1706
DZW800
13
11310
13760
2800
790
1200
2820
2800
2400
1841
DZW800
13
14400
14280
3000
860
1400
3020
3000
2600
1982
DZW800
13
15420
18200
About the draw-out
Executed standards
Design per GB/T12238, JB/T8527
Flange per GB/T9113 (please make note at order in case of an other standard)
Face-to-face dimension per GB/T12221
Pressure test per GB/T13927, JB/T9092
Design per ANSI B16.34
Flange per ANSI B16.5 or MSS SP-44
Face-to-face dimension per API609
Pressure test per API598
Performance specification
Nominal pressure
PN
ANSI
0.6-10MPa
150LB-300LB
Hydraulic seal test
1.5
times
Pneumatic seal test
1.1
times
Seal test of body
0.6
times
Body material
Carbon steel C
Casting pig Z
Ductaaloy Q
Alloy steel I
CrNiTi steel P, CrNiMoTi steel R
Work temperature
0-150¡æ
-15-300¡æ
-29-425¡æ
-29-530¡æ
-196-600¡æ
Suitable media
Water, sea water, steam, gas, oil goods etc.
Water, steam, gas, oil goods etc.
Acetic acid, nitric acid, corrosive gas, medicine etc.
Flow coefficient table
DN
mm
200
250
300
350
400
450
500
in
8
10
12
14
16
18
20
Flow coefficient Cv
2256
3178
4942
6317
8604
11053
13850
DN
mm
600
700
800
900
1000
1200
in
24
28
32
36
42
48
Flow coefficient Cv
21489
33866
42638
50453
72741
92638
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