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Email: sales@valve.asia
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Home   Products   Butterfly Valves

Electric flexible butterfly's valve

Available Size:

DN(mm)
40
50
65
80
100
150
200
250
300
350
400
450
500
600
650
700
750
800
900
NPS(inch)
1½"
2"
2½"
3"
4"
6"
8"
10"
12"
14"
16"
18"
20"
24"
26"
28"
30"
32"
36"
■Purpose and characteristic

Telescopic butterfly valve is suitable for water supplying and draining, gas pipe as adjust flux and cut off medium in foodstuff,pharmacy,chemical industry, petroleum,electric power, light textile, paper making etc, with temperature≤425℃，nominal pressure ≤1.6MP,and has function of compensation pipe expand with heat and contract with cold,the main characteristic as below:

1.Novel and reasonable design, particular configuration, light and easy to operate and start and stop rapidly.

2.Besides adjust and cut off currency, compensate temperature differential in pipe, which cause function of expansion with heat and extraction with cold, flexible butterfly valve can provide convenience for installation exchange, maintenance.

3.It has characteristic of hermetical components can adjust and replace, reliable harmetic capabilitiy etc.
■Adoption standard

Design standard:GB/T12238-1989
Flange connection dimension:GB/T9113.;GB4216
GB/T9115.1-2000;GB/T9115.2-2000
Pressure test:GB/T13927-1992;JB/T9092-1999
■Main technology parameter
Nominal diameter
DN（mm）
50～2000
Nominal pressure
PN（MPa）
0.6
1.0
1.6
Ps(MPa)Test pressure
Shell test
0.9
1.5
2.4
Seal test
0.66
1.1
1.76
Gas seal test
0.6
0.6
0.6
Appropriate temperatuer
Metalli sealing≤425℃   rubber sealing ≤80℃
Appropriate medium
Air,water,steam,coal gas,oil.
Drive modatlity
Hand,worm wheel drive, pneumatic drive, electric drive.
■Material for main parts
Parts name
Material
Body
Cast iron, cast steel,stainless steel,Cr.Mo.Steel、alloy steel
Disc
Cast steel,Alloy steel,stainless steel,Cr.Mo.Steel
Seal ring
Rubber,Teflon,polyester lactone, stainless steel
Stem
2Cr13、 Stainless steel,Cr.Mo.Steel
Flexible tube
Cast iron,cast steel,stainless steel,Cr.Mo.steel
Packing
Flexible graphite


 ■Main dimension

DN
H1
H2
H3
(flange)L
Lmax
Lmax
L
L1
L2
L3
L4
electric actuator type
mm
in
50
2
80
112
248
108
163
138
151
103
185
103
297
QB10-1
65
21/2
95
112
248
112
188
152
170
103
185
103
297
QB10-1
80
3
98
130
248
114
192
162
177
103
185
103
297
QB10-1
100
4
114
142
248
127
215
175
205
103
185
103
297
QB10-1
125
5
128
174
248
140
230
185
215
103
185
103
297
QB20-1
150
6
139
180
333
140
240
195
225
103
185
103
297
QB20-1
200
8
174
225
333
152
265
215
245
103
185
103
297
QB60-1
250
10
215
266
342
165
295
235
260
103
185
103
292
QB60-1
300
12
245
290
342
178
302
252
282
118
322
118
250
QB120-1
350
14
270
320
342
190
321
271
301
118
322
118
250
QB120-1
400
16
305
400
342
216
333
283
313
118
322
118
250
QB250-1
450
18
325
425
342
222
354
304
334
118
322
118
250
QB250-1
500
20
360
480
342
229
366
316
346
118
322
118
250
QB250-1
600
22
445
520
415
267
418
368
398
190
322
155
362
QB500-0.5
700
24
505
582
415
292
445
395
425
190
377
155
362
QB500-0.5
800
32
560
620
365
318
475
425
455
245
681
190
482
ZA60
900
36
630
715
365
330
505
455
485
245
766
268
370
ZA60
1000
40
680
760
365
415
515
465
495
245
766
268
370
ZA60
1200
48
795
905
396
470
562
512
542
245
879
268
405
ZA120
1400
56
900
1000
396
530
592
542
572
355
983
368
430
ZA120
1600
64
110
1160
460
600
636
586
616
355
1121
368
500
ZA240
1800
72
1124
1247
460
670
680
630
660
355
1121
368
500
ZA240
2000
80
1292
1367
460
760
730
680
710
355
1204
435
500
ZA240






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