Double Eccentric Wafer Butterfly Valve
The Double Eccentric Wafer Butterfly Valve is engineered for extreme conditions, delivering reliable, maintenance-free sealing across a remarkable temperature range from -60°C to +600°C. Featuring a fire-safe design with versatile seat options including soft R-PTFE and metallic Inconel, it ensures an exceptionally long service life even at high switching frequencies in heavy-duty applications.
Overview
Application:This Double Eccentric Wafer Butterfly Valve is designed for marine applications involving Fresh water, Sewage, Sea water, Air, Oils.
Material Specification:
Pt. | Description | ASTM |
|---|---|---|
1 | Body | |
Carbon Steel | WCB | |
Stainless Steel | CF8M | |
2 | Disc | |
Stainless Steel | CF8M | |
3 | Clamping ring | |
Stainless Steel | 316 | |
4 | Shaft | |
Stainless Steel | ||
5 | Seat ring | |
R--PTFE | ||
Inconel | ||
6 | Shaft bearing | |
Stainless Steel | 316 Ti | |
7 | Gland flange | |
Stainless Steel | 316 Ti | |
7 | Gland flange | |
Stainless Steel | 304 | |
Stainless Steel | CF8M | |
8 | Thrust collar | |
Stainless Steel | 304 | |
9 | Bearing ring | |
Stainless Steel | 316 Ti | |
10 | Support washer | |
Stainless Steel | 316 Ti | |
11 | Taper pin | |
Stainless Steel | ||
12 | Plug screw DIN 908 | |
Stainless Steel | CF8M | |
13 | Seal | |
PTFE | ||
Graphite | ||
Other materials upon request |
Pt. | Description | ASTM |
|---|---|---|
14 | Shaft seal | |
PTFE | ||
Graphite | ||
15 | Hex.-socket screw | |
Stainless Steel | B8M | |
16 | Threaded pin | |
Stainless Steel | B 8 | |
17 | Hex. nut | |
Stainless Steel | 8 | |
18 | Spacer sleeve | |
Stainless Steel | 316 Ti | |
19 | Graphite seal (for metal seat) | |
Graphite | ||
20 | Belleville spr. washer | |
Stainless Steel | 301 Ti | |
21 | Bracket | |
Steel | 283-C | |
22 | Hex. bolt | |
Steel | CS | |
23 | Hex. nut | |
Steel | CS | |
24 | Washer | |
Steel | CS | |
25 | Seal | |
Graphite | ||
26 | Cover plate | |
Steel | 283-C | |
27 | Hex.-socket screw | |
Stainless Steel | B 8 | |
28 | Centering piece | |
Stainless Steel | 316 Ti | |
29 | Countersunk screw | |
Stainless Steel | SS |
Technical Specifications:
Nominal diameter: DN 20 – DN 1200
Face-to-face: API 609
Top flange: EN ISO 5211
Marking: EN 19
Tightness check: EN 12266 (Leakage rate A) ISO 5208, Category 3
Temperature range: −60°C to +600°C
Turque:
DN (mm)
NPS (in)
10 (bar) R-PTFE
10 (bar) Inconel
16 (bar) R-PTFE
16 (bar) Inconel
25 (bar) R-PTFE
25 (bar) Inconel
40 (bar) R-PTFE
40 (bar) Inconel
50–65
2–2½
27
35
28
42
30
58
31
66
80
3
28
55
30
65
34
90
38
100
100
4
51
90
61
100
80
120
93
140
125
5
63
150
83
172
95
220
125
285
150
6
125
170
136
220
168
300
220
360
200
8
205
350
260
430
280
505
–
–
250
10
485
505
550
620
600
860
–
–
300
12
584
740
700
970
855
1280
–
–
350
14
740
815
930
1050
1200
1370
–
–
400
16
1050
1530
1640
2240
2460
2900
–
–
450
18
1150
1700
1750
2500
2700
3500
–
–
500
20
1210
2010
1800
2760
2800
4260
–
–
550
22
3500
3750
4430
4550
6010
6800
–
–
600
24
4500
4500
4600
5740
6200
8080
–
–
700
28
5300
6000
6100
6800
8100
–
–
–
800
32
6400
8000
7400
9500
9800
–
–
–
900
36
7800
–
9000
–
12000
–
–
–
1000
40
9800
–
11300
–
15000
–
–
–
1200
48
14300
–
16500
–
22000
–
–
–
Drawing:
Dimensions :
DN (mm) | NPS (in) | A | B | C | D | E | F | Flange | G | H1 | Z1 | Z2 | min. pipe-Φ | Weight (kg) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
50 | 2 | 133 | 99 | 232 | 112 | 43 | 80 | F05 | 12 | 15 | 40.9 | – | 51 | 7.4 |
65 | 2½ | 133 | 99 | 232 | 112 | 43 | 80 | F05 | 12 | 15 | 40.9 | – | 51 | 7.4 |
80 | 3 | 142 | 113 | 255 | 138 | 46 | 80 | F05 | 12 | 15 | 70.7 | 54.4 | 80 | 8.0 |
100 | 4 | 158 | 124 | 282 | 160 | 52 | 80 | F05 | 12 | 15 | 94.2 | 81.6 | 103 | 8.6 |
125 | 5 | 181 | 140 | 321 | 192 | 56 | 80 | F07 | 14 | 18 | 114.5 | 105.3 | 124 | 12.6 |
150 | 6 | 195 | 154 | 349 | 216 | 56 | 80 | F07 | 14 | 18 | 143.5 | 135.4 | 151 | 14.8 |
200 | 8 | 225 | 191 | 416 | 270 | 60 | 80 | F10 | 17 | 18 | 187.4 | 181.2 | 196 | 22.9 |
250 | 10 | 268 | 222 | 490 | 326 | 68 | 80 | F12 | 22 | 23 | 235.2 | 228.8 | 245 | 33.5 |
300 | 12 | 300 | 255 | 555 | 378 | 78 | 90 | F12 | 27 | 28 | 280.7 | 275.8 | 296 | 48.0 |
350 | 14 | 345 | 304 | 649 | 438 | 92 | 100 | F14 | 27 | 28 | 322.8 | 315.9 | 334 | 94.7 |
400 | 16 | 375 | 339 | 714 | 488 | 102 | 100 | F14 | 36 | 36 | 371.6 | 363.9 | 385 | 115.0 |
450 | 18 | 412 | 340 | 752 | 530 | 114 | 120 | F16 | 36 | 36 | 426.8 | 426.8 | 438 | 141.0 |
500 | 20 | 425 | 399 | 824 | 593 | 127 | 120 | F16 | 46 | 46 | 468.7 | 466 | 484 | 186.0 |
550 | 22 | 456 | 405 | 861 | 635 | 154 | 200 | F25 | 46 | 46 | 525.7 | 525.7 | 540 | 236.0 |
600 | 24 | 490 | 468 | 958 | 692 | 154 | 200 | F25 | 55 | 55 | 544.2 | 542.2 | 560 | 310.0 |
700 | 28 | 554 | 522 | 1076 | 820 | 165 | 200 | F25 | 80 | 130 | 673 | 659 | 678 | 430.0 |
800 | 32 | 605 | 566 | 1171 | 902 | 190 | 200 | F30 | 90 | 130 | 748 | 736 | 776 | 551.0 |
900 | 36 | 660 | 637 | 1297 | 1006 | 204 | 200 | F30 | 100 | 145 | 847 | 833 | 876 | 732.0 |
1000 | 40 | 715 | 687 | 1402 | 1112 | 216 | 200 | F30 | 100 | 145 | 944 | 935 | 975 | 802.0 |
1200 | 48 | 815 | 800 | 1615 | 1328 | 200 | F35 | 110 | 185 | 1139 | 1135 | 1175 | 1300.0 |
