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Flexible butterfly valve

Flexible butterfly valve
  • sell:021-32051999
  • sell:021-32050777
  • fax:021-66099555

Details

  • Product Introduction
  • Service Promise
  • Ordering Process

The expansion butterfly valve/pneumatic expansion butterfly valve/electric expansion butterfly valve is suitable for water supply and drainage of food, medicine, chemical industry, petroleum, electric power, light spinning, papermaking, etc. whose temperature is less than 80, nominal pressure is less than 1.6 MPa, and the function of regulating flow rate and intercepting flow medium on the gas pipeline is to compensate the hot expansion and cold contraction of the pipeline.


Main features of retractable butterfly valve


1. The design is novel, reasonable, unique in structure, light in weight, convenient in operation and quick in opening and closing.


2. The telescopic butterfly valve can not only adjust and intercept the flow and compensate the thermal expansion and cold contraction caused by the temperature difference in the pipeline, but also provide convenience for the installation, replacement and maintenance of the valve.


3, the sealing parts can be adjusted and replaced, and the sealing performance is reliable.

Standard for extension butterfly valves


Design standard: GB/T12238-1989


Flange joint size: GB/T9113.1-2000; GB/T9113.2-2000


GB/T9115.1-2000; GB/T9115.2-2000


Pressure test: GB/T13927-1992; JB/T9092-1999


Main technical parameters of retractable butterfly valve


Nominal path
DN(mm)
50~2000
Nominal pressure
PN(MPa)
0.6
1.0
1.6
Test pressure
strength test
0.9
1.5
2.4
Seal test
0.66
1.1
1.76
Seal test
0.6
0.6
0.6
Applicable temperature
≤80℃
Applicable medium
Air, water, steam, gas, oil and so on.
Driving form
Manual, worm and worm gear drive, gas drive and electric drive.


Main material of expansion butterfly valve


Part name
Material Science
valve body
Cast iron, cast steel, stainless steel, chrome molybdenum steel, alloy steel
Disc
Cast steel, alloy steel, stainless steel, chrome molybdenum steel
Seal ring
Rubber, polytetrafluoroethylene, polygreases, stainless steel
Stem
2Cr13, stainless steel, chrome molybdenum steel
Telescopic tube
Cast iron, cast steel, stainless steel, chrome molybdenum steel
filler
Flexible graphite


Contour dimensions of retractable butterfly valves


nominal Path
Outline size (reference value)
Flange size and bolt hole size (standard value)
H
H1
Most design Large length
Most design Small length
Design length
A
B
0.6MPa
1.0MPa
1.6MPa
millimeter
D
D1
D2
n-d
D
D1
D2
n-d
D
D1
D2
n-d
50
80
309
186
156
171
180
200
140
110
88
4-14
165
125
99
4-18
165
125
99
4-18
65
95
337
190
160
175
180
200
160
130
108
4-14
185
145
118
4-18
185
145
118
4-18
80
98
347
198
166
182
180
200
190
150
124
4-18
200
160
132
8-18
200
160
132
8-18
100
114
373
228
188
208
180
200
210
170
144
4-18
220
180
156
8-18
220
180
156
8-18
125
128
405
240
201
220
180
200
240
200
174
8-18
250
210
184
8-18
250
210
184
8-18
150
139
440
246
206
226
270
280
265
225
199
8-18
285
240
211
8-22
285
240
211
8-22
200
174
612
265
219
242
400
425
320
280
254
8-18
340
295
266
8-22
340
295
266
12-22
250
215
693
295
240
267
400
425
375
335
309
12-18
395
350
319
12-22
405
355
319
12-26
300
245
747
308
254
282
450
560
440
395
363
12-22
445
400
370
12-22
460
410
370
12-26
350
270
802
327
272
300
450
560
490
445
413
12-22
505
460
429
16-22
520
470
429
16-26
400
305
991
368
308
338
535
580
540
495
463
16-22
565
515
480
16-26
580
525
480
16-30
450
325
1037
370
310
340
535
580
595
550
518
16-22
615
565
530
20-26
640
585
548
20-30
500
360
1127
392
332
362
535
580
645
600
568
20-22
670
620
582
20-26
715
650
609
20-33
600
445
1377
441
375
408
570
660
755
705
667
20-26
780
725
682
20-30
840
770
720
20-36
700
505
1496
460
400
430
750
550
860
810
772
24-26
895
840
794
24-30
910
840
794
24-36
800
560
1584
499
445
475
750
550
975
920
878
24-30
1015
950
901
24-33
1025
950
901
24-39
900
630
1676
520
460
490
750
550
1075
1020
978
24-30
1115
1050
1001
28-33
1125
1050
1001
28-39
1000
680
1760
600
530
565
900
750
1175
1120
1078
28-30
1230
1160
1112
28-36
1255
1170
1112
28-42
1200
795
2018
675
571
623
1000
925
1405
1340
1295
32-33
1455
1380
1328
32-39
1485
1390
1328
32-48
1400
900
2363
760
683
722
1000
925
1630
1560
1510
36-36
1675
1590
1530
36-42
1685
1590
1530
36-48
1600
1100
2723
860
770
815
1000
925
1830
1760
1710
40-36
1915
1820
1750
40-48
1930
1820
1750
40-56
1800
1124
2844
930
830
880
1100
980
2045
1970
1718
44-39
2115
2020
1950
44-48
2130
2020
1950
44-56
2000
1292
3127
1020
920
970
1100
980
2265
2180
2125
48-42
2325
2230
2150
48-48
2345
2230
2150
48-62


The best quality, first-class service Qigao creates more value for you!

"Qigao Valve" expects to continuously improve service quality and strive for excellence. "Sincere service" is the eternal theme of "Qigao". "Qigao" strictly followsIS09001-2000 Quality system certification requirements, strict quality control, responsibility to people, to ensure the healthy operation of production, sales and service. Strengthen communication with users and provide quality products to our customers with perfection and perfect service. Hereby our factory makes the following commitments:

Product Standards:

Products in strict accordance with ChinaGB、HG Standard and USAPISuch as standard design, manufacturing, acceptance. The hardness of the sealing surface meets the requirements of the state and the width exceeds the national standard.

pre-sale service:

Product introduction, technical exchange, non-standard product design, troubleshooting。

Sale service:

A trustworthy contract guarantees timely delivery and keeps in touch with customers. For special or duplicate products, our factory arranges technicians to use and troubleshoot the products for users.

After sales service:

1、"Qigao" brand product quality period is from the factory12In the month, the implementation of the "three guarantees" service (return, replacement, warranty).

2、During the use of our products, our factory regularly organizes technical and quality inspection personnel to visit and consult users for feedback on product quality, usage status and improvement opinions, so as to further improve product quality.

3、Respond quickly to the quality of user complaints, after-sales service personnel rushed to the scene in 24-36 hours (48 hours outside the province).

4、For after-sales service, users are required to fill out the quality feedback information form after the service and make an appraisal opinion in order to improve the service quality of Qigao.

1、If the customer has special requirements for the product, the following instructions must be provided in the order contract.:

a、Structure length;

b、Connection Type;

c、Nominal diameter, full diameter, reduced diameter, pipe size;

d、Operating medium and temperature, pressure range;

e、Tests, inspection standards and other requirements

2、The factory can configure various types of driving devices according to customer's specific requirements.。

3、If the type and model of the valve are determined by the customer, the customer shall correctly state the meaning and requirements of the model and sign the contract under the condition that the supplier and the buyer understand each other.

4、For futures and order customers, please call us in advance to tell the required valve model, specification, quantity, delivery time and location, and timely transfer to the factory account according to the total 30% deposit or full payment. The rest of the payment is pending. Import before shipment to arrange delivery in time.

 

Order Process:

1、Customer purchase list fax to021-33872143,Or call us 021-33872141

2、Receive customer purchase list, provide valve model selection and quotation (price list)。

3、Specific agreement: delivery date, special requirements, etc.。

download Google:

1、If the customer has special requirements for the product, the following instructions must be provided in the order contract.:

a、Structure length;

b、Connection Type;

c、Nominal diameter, full diameter, reduced diameter, pipe size;

d、Operating medium and temperature, pressure range;

e、Tests, inspection standards and other requirements

2、The factory can configure various types of driving devices according to customer's specific requirements.。

3、If the type and model of the valve are determined by the customer, the customer shall correctly state the meaning and requirements of the model and sign the contract under the condition that the supplier and the buyer understand each other.

4、For futures and order customers, please call us first to tell the required valve model, specifications, quantity, delivery time and location, and press the total30%The deposit or full payment will be remitted to our factory account in time., The rest of the payment will be remitted before shipment to arrange delivery in time.。

Sale service:

Trustworthy contract, guarantee timely delivery, keep in touch with customers at any time。

For special or duplicate products, our factory arranges technicians to use and troubleshoot the products for users.

After sales service:

1、"Qigao" product quality period is from the factory12Month, practiceThree packsService (return, replacement, warranty)。

2、During the use of our products, our factory regularly organizes technical and quality inspection personnel to visit and consult users for feedback on product quality, usage status and improvement opinions.,
In order to further improve product quality。

3、Respond quickly to the quality of user complaints, after-sales service personnel24-36Hours (outside the province48Hour) rushed to the scene。

4、For after-sales service, the user is required to fill out the quality feedback information form after the service and make an appraisal opinion in order to improve the service quality of “Qigao”.。

statement

  1. All text, data and pictures in this article are for reference only.Flexible butterfly valvePlease contact us at 4000-700-665 for details of performance, size and price.
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