Big size WCB triple offset high performance flange butterfly valve
Valve Type: |
Flange butterfly valve |
Structure: |
Eccentric |
Standard: |
API/EN/JIS |
Workmanship: |
Investment casting |
Sealing direction: |
Bidirectional |
Sealing grade: |
Zero leakage |
Temperature: |
-190°C < T < 700°C |
Operation: |
Handle |
Characteristics
The large-size flanged triple eccentric butterfly valve features reinforced thick body and triple-offset metal hard seal. It boasts outstanding deformation resistance and self-tightening bidirectional bubble-tight shutoff. With full bore low-resistance flow path and stable flanged connection, it matches various heavy-duty actuators and serves high-temperature large-flow main pipelines in heating, power, metallurgy, environmental protection and petrochemical industries.

Advantages
1.Large Flow & Low Resistance
The large butterfly valve with smooth straight flow path provides large flow coefficient and minimal pressure drop, ideal for main pipeline high-flow continuous operation.
2.Stable Sealing Under Large Pressure Difference
Triple-offset flanged butterfly valve with metal hard seal achieves friction-free operation and self-tightening sealing, ensuring bidirectional zero leakage under strong flushing and large differential pressure.
3.Firm Flange Connection
Full flanged structure with uniform bolt force distribution provides high stability and vibration resistance for long-term main pipeline service.
4.Compatible with Heavy-duty Actuators
Optimized torque structure matches large electric, pneumatic and worm gear actuators, realizing smooth and stable opening and closin.
Packing
Standard export wooden case packaging

Application Scenarios
The large size metal to metal flanged butterfly valve is extensively installed on large-bore main pipelines of municipal heating steam network, power plant flue gas & circulating water system, metallurgical hot air pipeline, desulfurization exhaust duct and petrochemical thermal oil & process gas piping.



Material
|
Part name |
Meterial |
|
Valve body |
WCB,QT450-10,Q235,Alloy steel,stainless steel,etc. |
|
Valve stem |
Alloy steel,stainless steel |
|
Seal ring |
Stainless steel composite multi-level |
|
Packing |
Flexible graphite or stuffing |
|
Valve seat |
Stainless steel,cobalt based hard alloy |
|
Valve stem |
Stainless steel |
Dimension

|
PN (MPa) |
DN (mm) |
L |
D |
D1 |
D2 |
Z-φd |
b |
f |
H |
H0 |
A |
B |
|
1.0 |
150 |
140 |
285 |
240 |
211 |
8-φ22 |
24 |
2 |
385 |
230 |
66 |
150 |
|
200 |
152 |
340 |
295 |
266 |
8-φ22 |
24 |
2 |
471 |
297 |
85 |
170 |
|
|
250 |
165 |
395 |
350 |
319 |
12-φ22 |
26 |
2 |
533 |
327 |
85 |
170 |
|
|
300 |
178 |
445 |
400 |
370 |
12-φ22 |
26 |
2 |
606 |
364 |
106 |
205 |
|
|
350 |
190 |
505 |
460 |
429 |
16-φ22 |
26 |
2 |
694 |
404 |
106 |
205 |
|
|
400 |
216 |
565 |
515 |
480 |
16-φ26 |
26 |
2 |
757 |
444 |
130 |
240 |
|
|
450 |
222 |
615 |
565 |
530 |
20-φ26 |
28 |
2 |
814 |
472 |
155 |
240 |
|
|
500 |
229 |
670 |
620 |
582 |
20-φ26 |
28 |
2 |
902 |
522 |
169 |
306 |
|
|
600 |
267 |
780 |
725 |
582 |
20-φ30 |
30 |
5 |
1048 |
590 |
198 |
324 |
|
|
700 |
292 |
895 |
840 |
794 |
24-φ30 |
30 |
5 |
1277 |
810 |
220 |
335 |
|
|
800 |
318 |
1015 |
950 |
901 |
24-φ33 |
32 |
5 |
1385 |
844 |
241 |
356 |
|
|
900 |
330 |
1115 |
1050 |
1001 |
28-φ33 |
34 |
5 |
1490 |
890 |
241 |
356 |
|
|
1000 |
410 |
1230 |
1160 |
1112 |
28-φ36 |
34 |
5 |
1985 |
1228 |
241 |
356 |
|
|
1200 |
470 |
1455 |
1380 |
1328 |
32-φ39 |
38 |
5 |
2191 |
1340 |
35 |
785 |
|
|
1400 |
530 |
1675 |
1590 |
1530 |
36-φ42 |
42 |
5 |
2326 |
1450 |
35 |
785 |
|
|
1600 |
600 |
1915 |
1820 |
1750 |
40-φ48 |
46 |
5 |
2685 |
1590 |
35 |
785 |
|
|
1800 |
670 |
2115 |
2020 |
1950 |
44-φ48 |
50 |
5 |
2924 |
1710 |
60 |
865 |
|
|
1.6 |
150 |
140 |
285 |
240 |
211 |
8-φ22 |
24 |
2 |
385 |
230 |
66 |
150 |
|
200 |
152 |
340 |
295 |
266 |
8-φ22 |
24 |
2 |
471 |
297 |
85 |
170 |
|
|
250 |
165 |
395 |
350 |
319 |
12-φ22 |
26 |
2 |
533 |
327 |
85 |
170 |
|
|
300 |
178 |
445 |
400 |
370 |
12-φ22 |
32 |
2 |
606 |
364 |
106 |
205 |
|
|
350 |
190 |
505 |
460 |
429 |
16-φ22 |
34 |
2 |
694 |
404 |
106 |
205 |
|
|
400 |
216 |
565 |
515 |
480 |
16-φ26 |
36 |
2 |
757 |
444 |
130 |
240 |
|
|
450 |
222 |
615 |
565 |
530 |
20-φ26 |
38 |
2 |
814 |
472 |
155 |
240 |
|
|
500 |
229 |
670 |
620 |
582 |
20-φ26 |
42 |
2 |
902 |
522 |
169 |
306 |
|
|
600 |
267 |
780 |
725 |
582 |
20-φ30 |
44 |
5 |
1048 |
590 |
198 |
324 |
|
|
700 |
292 |
895 |
840 |
794 |
24-φ30 |
46 |
5 |
1277 |
810 |
220 |
335 |
|
|
800 |
318 |
1015 |
950 |
901 |
24-φ33 |
48 |
5 |
1385 |
844 |
241 |
356 |
|
|
900 |
330 |
1115 |
1050 |
1001 |
28-φ33 |
34 |
5 |
1490 |
890 |
241 |
356 |
|
|
1000 |
410 |
1230 |
1160 |
1112 |
28-φ36 |
38 |
5 |
2010 |
1245 |
241 |
356 |
|
|
1200 |
470 |
1455 |
1380 |
1328 |
32-φ39 |
42 |
5 |
2220 |
1360 |
35 |
785 |
|
|
1400 |
530 |
1675 |
1590 |
1530 |
36-φ42 |
44 |
5 |
3437 |
1456 |
35 |
785 |
|
|
1600 |
600 |
1915 |
1820 |
1750 |
40-φ48 |
46 |
5 |
2756 |
1650 |
35 |
785 |
|
|
1800 |
670 |
2115 |
2020 |
1950 |
44-φ48 |
48 |
5 |
2985 |
1760 |
60 |
865 |
















