Basic Info of CF3M Double Offset Butterfly Valve
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The CF3M (316L stainless steel) valve disc has lower carbon content, improved resistance to intergranular corrosion, better performance in aggressive environments, making this CF3M Disc double eccentric butterfly valve ideal for harsh environments and chemical applications.
- The double-eccentric design minimizes seat wear, reduces friction between disc and seat, as the offset disc quickly moves away from seat after opening. besides, it can enhance sealing performance, thereby extending service life. This design also lowers the operating torque, allowing for the use of smaller actuators and resulting in 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.
Parts Material Options of Double Offset Butterfly Valve
| ITEM | Standard |
|---|---|
| Nominal Diameter Range | DN100-DN3000 |
| Design | EN593 | API609 |
| Face to Face | EN558 | ISO5752 | API608 | BS5155-4 |
| Top Flange | ISO5211 |
| Flange Drilling | PN6 | PN10 | PN16 | ASME B16.5 CL150 | JIS 10K |
| Pressure Rating | PN6 | PN10 | PN16 | PN25 | CL150 | JIS 10K |
| Tightness Test | ISO5208 | API598 | EN12266-1 |
Double Offset Butterfly Valve Parts
| Parts | Ductile Iron type | WCB type | Stainless Steel Type (HP) | Duplex Stainless Steel Type (HP) |
|---|---|---|---|---|
| Body | Ductile Iron(GGG40/50) | A216 A217 A105(forged) |
SS304/ CF8 SS316/CF8M SS304L/CF3 SS316L/CF3M |
2205 2507 1.4529 |
| Disc | Ductile Iron with Epoxy Spray Coating Stainless Steel Duplex Stainless Steel |
SS304/ CF8 SS316/CF8M SS304L/CF3 SS316L/CF3M 2205 2507 1.4529 |
2205 2507 1.4529 |
|
| Seat | NBR, EPDM, Viton, Hypalon, Silicon, PFA, PTFE | |||
| 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
