Short Description

Model No.:

China valves Manufacturer www.epowermetals.com offers concentric butterfly valve.

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Key Specifications / Features

Type: Concentric butterfly valve
Material: A536,A126,WCB,LCB,CF8,CF8M.CF3.CF3M,CN7M,904L
Size: 1″ (DN25) – 80″ (DN2000)
Pressure:  125LB (PN6) – 150LB (PN16)
Connection type: Wafer concentric butterfly valve, Lugged concentric butterfly valve, Flanged concentric butterfly valve
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

Standard

  • Design Standard: API 609, MSS SP-67, MSS SP-68, BS 5155
  • Face to Face: API 609, ASME B16.10, BS 5155, EN1092
  • End Connection: DIN PN10/16/25, ANSI B16.1, BS4504
  • Inspection and Test: API 598

The structural feature of concentric butterfly valve is that the valve stem axis, butterfly plate center and body center are in the same position. The utility model has the advantages of simple structure and convenient manufacture. Common rubber lined butterfly valves belong to this category. The disadvantage is that the butterfly plate and valve seat are always in the state of extrusion and scraping, large resistance distance and fast wear. In order to overcome extrusion, scraping and ensure sealing performance, the valve seat is basically made of elastic materials such as rubber or polytetrafluoroethylene, but its use is limited by temperature. This is why people traditionally think that the butterfly valve is not resistant to high temperature.

Specifications of cconcentric butterfly valve

Range Application
Size 1″ (DN25) – 80″ (DN2000)
Fluid Water
Rating JIS 10K, ANSI 150#, PN10
End Connection Wafer, Lugged, Flanged
Temp. Range NBR -20 ~ 80°C
EPDM -20 ~ 120°C
VITON -20 ~ 165°C
Materials Body Cast Iron, Ductile Iron, Cast Steel, Stainless Steel,
(Ni) Al Bronze, (Super) Duplex S.S etc.
Disc Stainless Steel, (Ni) Al Bronze, (Super) Duplex S.S etc.
Seat Rubber (EPDM, NBR, VITON etc.)

concentric03 - Concentric butterfly valve

  • No. Part Name
    1 BODY
    2 DISC
    3 SEAT
    4 BACK RING
    5 BUSH
    6 UPPER SHAFT
    7 LOWER SHAFT
    8 GLAND BUSH
    9 PACKING GLAND
    10 GLAND BOLT
    11 THRUST PLATE
    12 END COVER O-RING
    13 END COVER
    14 SPRING WASHER
    15 HEX BOLT_END COVER
    16 DISC PIN
    17 DISC PIN O-RING
    18 DISC PIN WASHER
    19 DISC PIN HEX NUT
    20 BRACKET HEX BOLT
    21 BRACKET HEX NUT
    22 KEY

Drawing Of Concentric Butterfly Valves

201472681759786 - 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
32-4

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