Basic Info of Double Offset Butterfly Valve
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The CF3M (316L stainless steel) valve disc offers excellent corrosion resistance, making the double eccentric butterfly valve ideal for harsh environments and chemical applications.
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The double eccentric design minimizes seat wear, reduces friction, and enhances sealing performance, thereby extending service life. This design also reduces the torque required for operation, allowing for the use of smaller actuators and cost savings.
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A tight, bidirectional seal ensures leak-free flow in both lateral directions. Unless otherwise specified, double eccentric butterfly valves are typically single directional valves.
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The double offset butterfly valve is designed to meet international standards such as API 609, AWWA C504, ISO 5752, and ASME B16.34 to ensure its reliability and safety.
- DN1200 large-diameter double eccentric butterfly valve can be equipped with worm gear, electric actuator or pneumatic actuator.
Double Offset Butterfly Valve Parts
| Parts | Ductile Iron type | WCB type | Stainless Steel Type | Duplex Stainless Steel Type |
|---|---|---|---|---|
| Body | Cast Iron(GG25) Ductile Iron(GGG40/50) |
A216 A217 A105(forged) |
SS304/ CF8 SS316/CF8M SS304L/CF3 SS316L/CF3M |
2205 2507 1.4529 |
| Disc | Ductile Iron with Ni coated Ductile Iron with nylon coated Ductile Iron with PTFE/EPDM lined Stainless Steel Duplex Stainless Steel Bronze |
SS304/ CF8 SS316/CF8M SS304L/CF3 SS316L/CF3M 2205 2507 1.4529 |
2205 2507 1.4529 |
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| Seat | NBR, EPDM, Viton, Hypalon, Silicon, PFA | |||
| Stem | SS416, SS431, SS304, SS316, Duplex Stainless Steel, Monel | Duplex Stainless Steel, Monel | ||
| Actuator | Worm Gear, Electric, Pneumatic | |||
Paraments of Double Eccentric Butterfly Valve
| SIZE | H1 | H2 | L | f | ø2 | ø3 | n-ød1 | øX |
|---|---|---|---|---|---|---|---|---|
| DN100 | 178 | 123 | 190 | 3 | 70.0 | 90.00 | 4-10 | 20 |
| DN150 | 217 | 162 | 210 | 3 | 102.0 | 125.00 | 4-12 | 20 |
| DN200 | 250 | 175 | 230 | 3 | 102.0 | 125.00 | 4-12 | 25 |
| DN250 | 281 | 206 | 250 | 3 | 102.00 | 125.00 | 4-12 | 30 |
| DN300 | 306 | 246 | 270 | 4 | 125.00 | 150.00 | 4-14 | 34 |
| DN350 | 334 | 284 | 290 | 4 | 140.0 | 175.00 | 4-18 | 33 |
| DN400 | 374 | 304 | 310 | 4 | 140.0 | 175.00 | 4-18 | 41 |
| DN500 | 433 | 375 | 350 | 4 | 165.0 | 210.00 | 4-22 | 51 |
| DN600 | 493 | 436 | 390 | 5 | 165.0 | 210.00 | 4-22 | 51 |
| DN800 | 581 | 574 | 470 | 5 | 254.0 | 300.00 | 4-18 | 85 |
| DN900 | 692 | 606 | 510 | 5 | 254.0 | 300.00 | 4-18 | 85 |
| DN1000 | 722 | 685 | 550 | 5 | 254.0 | 300.00 | 8-18 | 85 |
| DN1200 | 845 | 796 | 630 | 5 | 298.0 | 350.00 | 8-22 | 105 |
Manufacture Process of ZFA Butterfly Valve Manufacturer
Certificates of Zfa Valve
WRAS
CE
ISO 9001
EAC Russia
