• Concentric butterfly valve
  • Concentric butterfly valve

Concentric butterfly valve

Material of butterfly valve:  A536,A126,WCB,LCB,CF8,CF8M.CF3.CF3M,CN7M,904L

Size of butterfly valve:  1inch(DN25) - 80 inch (DN2000)

Pressure of butterfly valve:  125LB(PN6)-150LB(PN16)

Connection type :  Flange(FF,RF,) BW, WAFER

Kind of drive:  Wrench,Gear,Electric actuators and pneumatic actuators

Operating temperature :   -100℃ - 190℃

Working medium:  water, gas,oil,concrete,Sulfuric acid and hydrochloric acid

Catalogue:

butterfly valve.pdf


Introduction for concentric Butterfly Valve


Concentric Butterfly Valve use have another name is soft seal butterfly valves,  the flexibility of rubber seat, could easily achieve zero leaked, their structure is very simple and opening and closing speed, therefore is a widely applied valve in oilfield, agriculture, water & waste water and mining industries. Due to its rubber lined body materials, it is usually used in low pressure lines.

Wafer type is the common style of butterfly valve and is less expensive than the lug type. The wafer butterfly valve is installed between two flanges. The valve is kept in place by using bolts or studs and nuts from flange to flange. This type of installation, of course, makes it impossible to disconnect just one side of the piping system from the valve.


Features for soft seal butterfly valve:

Center Lined, Resilient Seat

Bi-Directional Sealing

Shutoff and Throttling Operation

Wafer Body Type, Lug Type or Flanged Type

Applicable Standards

Design & Manufacture: API 609, EN 593, AWWA C504


Drawing for concentric Butterfly Valve


Concentric butterfly valve


inch
L
L1
D
D1
D2
H2
H1
H
M
n-d
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
2"
1.72
43
4.25
108
6.00
152
4.75
120.5
3.62
92
4.33
110
11.02
280
13.58
345
M18
4-19
3"
1.93
49
4.50
114
7.50
190
6.00
152.5
5.00
127
4.92
125
12.40
315
14.96
380
M18
4-19
4"
2.20
56
5.00
127
9.00
229
7.50
190.5
6.19
157
5.70
145
13.78
350
16.34
415
M20
8-19
5"
2.50
64
5.50
140
10.00
254
8.50
216
7.32
186
6.50
165
15.35
390
17.91
455
M20
8-22
6"
2.75
70
5.50
140
11.00
279
9.50
241.5
8.50
216
6.89
175
17.91
455
21.45
545
M20
8-22
8"
2.80
71
5.90
150
13.50
343
11.75
298.5
10.62
270
8.26
210
20.67
252
24.21
615
M24
8-22
10"
3.00
76
6.30
160
16.00
406
14.25
362
12.75
324
9.84
250
23.81
605
27.36
695
M24
12-25
12"
3.38
86
4.00
178
19.00
483
17.00
298.5
15.00
381
11.24
285
28.74
730
32.78
830
M27
12-25
14"
3.63
92
4.20
190
21.00
533
18.75
362
16.25
413
12.60
320
31.50
800
35.43
900
M27
12-29
16"
4.00
102
8.50
216
23.00
597
21.25
432
18.50
470
13.98
355
34.25
840
38.58
980
M30
16-29
18"
4.50
114
8.74
222
25.00
635
22.75
476
21.00
533
14.96
380
36.22
920
40.55
1030
M30
16-32
20"
5.00
127
9.00
229
27.50
399
25.00
540
23.00
584
16.34
415
39.37
1000
43.70
1110
M33
20-32
24"
6.06
154
10.50
267
32.00
813
29.50
578
27.25
692
18.70
475
45.51
1155
51.37
1305
M33
20-35
30"
6.50
165
11.50
292
38.75
985
36.00
635
33.75
857
22.38
580
54.13
1375
60.03
1525
M39
28-35
32"
7.50
190
12.50
318
41.75
1060
38.50
749.5
36.00
914
24.80
630
56.50
1435
62.40
1585
M39
28-41
36"
8.00
203
13.00
330
46.00
1168
42.75
914
40.25
1022
26.77
680
62.40
1585
69.48
1765
M20
32-41


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