8Inch Hard Back Seat CF8 Disc Wafer DN200 Butterfly Valve
Basic Info of Hard Back Seat DN200 Wafer Butterfly Valve
- Ductile Iron Body provides DN200 wafer butterfly valve high tensile strength, excellent impact resistance and superior durability compared to grey cast iron.
- CF8 Stainless Steel Disc (Equivalent to SS304) offers excellent corrosion resistance, good mechanical strength, and smooth surface finish reducing flow resistance in corrosive environments.
- Hard Back Seat Design can reinforces seat stability under pressure, prevent seat from deformation, improves sealing reliability.
- Hard-back seat types provide reliable bubble-tight shutoff sealing, and bi-directional sealing capability.
- DN200 wafer butterfly valve with EPDM seat provide low torque operation, making the valve suitable for Manual lever, gearbox operation, pneumatic actuators and electric actuators.
Technical Parameters of DN200Wafer Butterfly Valve
Material
| Part Name | Material/Method |
| Body | Ductile Iron, Casting Iron, WCB, LCB/LCC, Stainless Steel, Duplex Stainless Steel, Aluminium Bronze |
| Disc | Ductile Iron(Coated/Lined), WCB, LCB/LCC, Stainless Steel, Duplex Stainless Steel, Aluminium Bronze |
| Seat | Rubber(EPDM/NBR/VITON), Nature Rubber, Silicon Rubber, PU, HNBR, Hypalon |
| Stem | 304, 316, 420(2Cr13), 431, 1.4462, 17-4PH, Monel |
| Actuator | Handlever, Worm Gear, Electric, Pneumatic |
Technical Parameters
| ITEM | Standard |
| 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 |
Drawing and Dimension of Worm Gear Wafer Butterfly Valve
| SIZE | A | øP | 4-ø | a° | L | ø1 | ø2 | 4-d | □E | H | L1 | ∅3 | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PN10 | PN16 | CL150 | PN10 | PN16 | CL150 | PN10 | PN16 | CL150 | ||||||||||
| DN350 | 368 | ∅460 | ø470 | ∅476.2 | 4-∅23 | 4-∅28 | 4-ø28.4 | 11.25° | 11.25° | 22.5° | 76.5 | ∅140 | ø102 | 4-ø12 | 22 | 45 | 174 | 460 |
| DN400 | 400 | ø515 | ø525 | ø539.7 | 4-ø28 | 4-ø31 | 4-ø28.4 | 11.25° | 11.25° | 11.25° | 85.7 | ø175 | ∅140 | 4-ø18 | 27 | 50 | 195 | 460 |
| DN450 | 422 | ø565 | ø585 | ø577.8 | 4-ø28 | 4-ø31 | 4-∅31.8 | 9° | 9° | 11.25° | 104.6 | ø175 | ø140 | 4-ø18 | 27 | 50 | 195 | 550 |
| DN500 | 480 | ø620 | ∅650 | ø635 | 4-∅28 | 4-ø34 | 4-ø31.8 | 9° | 9° | 9° | 130.28 | ø175 | ø140 | 4-ø18 | 32 | 55 | 195 | 600 |
| DN600 | 562 | ø725 | ø770 | ø749.3 | 4-∅31 | 4-ø37 | 4-∅35.1 | 9° | 9° | 9° | 151.36 | ∅210 | ø165 | 4-∅23 | 36 | 68 | 240 | 700 |
Manufacture Process of Butterfly Valve
Certificates of ZFA Valve
WRAS
CE
ISO 9001
EAC Russia
