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Concentric butterfly valve
Catalogue:
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
|
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
|
