Alloy 20 Wafer Butterfly Valve
Body Material: Alloy 20
Disc: Alloy 20
Stem: Alloy 20
Gland: Alloy 20
Cover: Alloy 20
Seat: Alloy 20, Graphite
Packing: PTFE
Pin: SS316
Bearing: SS316+PTFE
Nominal Size: 2″ to 12″
Nominal Pressure: Class 150 to Class 300
Design and Manufacturing: API609
Face to Face Dimensions: API609
Flange Dimensions: ASME B16.5
Testing: API598
Dimensions
DN
A
B
C
E
L
H
a
D1
D2
D3
D4
N-D5
D6
D7
D8
D9
D10
mm
inch
50
2″
280
161
42.04
52.9
32
9.52
45°
83
11
52.6
120
4-23
70
10
102
100
12.6
65
21/2″
303
175
44.68
64.5
32
9.52
45°
83
11
64.3
136.13
4-26.6
70
10
102
120
12。6
80
3″
315
181
45.21
78.8
32
9.52
45°/22.5°
83
11
78.8
152.4/160.0
4-24/4-18
70
10
102
127
12.6
100
4″
353
200
52.07
104
32
11.11
45°/22.5°
83
11
104
177.8/185.16
4.17.5/4-25.8
70
10
102
156
15.77
125
5″
379
213
54.36
123.3
32
12.7
22.5°
83
11
123.3
215.01
4-23
70
10
102
190
18.92
150
6″
404
226
55.75
155.6
32
12.7
22.5°
83
11
155.7
238.12
4-25
70
10
102
212
18.92
200
8″
487
260
60.58
202.5
45
15.87
15°/22.5°
127
14
202.4
296.07
4-23/4-26
102
12
152
268
22.1
250
10″
547
292
65.63
250.5
51
–
22.5°/15°
127
14
250.4
357
4-22/4-29
102
12
152
325
28.45
300
12″
631
337
76.9
301.6
51
–
15°
127
14
301.5
406.4/431.8
4-30.2/4-25.4
102
12
152
403
28.45
