Suzhou Alpine Flow Control Co., Ltd
Suzhou Alpine Flow Control Co., Ltd Be The Market Leader In Water Flow Control Valve
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On Off and Modulating Type Ductile Iron Double Eccentric Butterfly Valve
The AFC's double eccentric butterfly valve can be used in on/off or modulating application. It has the following features.
Features:
Arch shape disc design :
Flow thru disc-energy saving, lower pumping cost
Reduce head loss and minimize turbulence
Special Bearing:
Bearing-CS base coated with bronze + PTFE interior and tin exterior
Tin have a better electrolyte character, prevent rusting
Stronger than bronze bearing and last longer
Online repairing by EPOXY:
The special technology can help user to repair the Double Eccentric Flange Butterfly Valve without taking the valve out of the pipeline. The user only needs to repair it from the exterior of the butterfly valve without going into the pipeline. Please consult the factory and we will show you how to repair the BV when the rubber seal is damaged.
Rubber Seat:
Multi ribs on the seal-reduce operation torque
Seal fixed in the groove and epoxy on the back side as a wedge, no worry of loosen
No need bolting and permanent positioned , decrease nut loose & hole rusting
Epoxy injected on the backside of groove
Dovetail design can tight the rubber seal
Operation Torque:
| Bare Head Torque (Nm) | |
| Inch | Nm |
| 4 | 85 |
| 6 | 128 |
| 8 | 210 |
| 10 | 250 |
| 12 | 372 |
| 14 | 760 |
| 16 | 1160 |
| 18 | 1280 |
| 20 | 1680 |
| 24 | 2500 |
| 28 | 2592 |
| 32 | 4428 |
| 36 | 5300 |
| 40 | 7245 |
| 48 | 13320 |
Materials:
| Item No. | Part Name | Material | Standard |
| 1 | Body | Ductile Iron | GJS500-7 |
| 2 | Lower Shaft | Stainless Steel | AISI304 |
| 3 | Disc | Ductile Iron | GJS500-7 |
| 4 | Main Shaft | Stainless Steel | AISI304 |
| 5 | Backup Ring | Plastic | PTFE |
| 6 | Retaining Plate | Carbon Steel | Commercial |
| 7 | Shaft Key | Carbon Steel | Commercial |
| 8 | In hex bolt | Carbon Steel | Commercial |
| 9 | O-ring | Rubber | NBR |
| 10 | Shaft Bearing | Carbon Steel+Bronze/PTFE | Commercial |
| 11 | In hex bolt | Carbon Steel | Commercial |
| 12 | Pin | Stainless Steel | AISI431 |
| 13 | In hex bolt | Carbon Steel | Commercial |
| 14 | Shaft Bearing | Carbon Steel+Bronze/PTFE | Commercial |
| 15 | Position Plate | Carbon Steel | Commercial |
| 16 | Nut | Carbon Steel | Commercial |
| 17 | In hex bolt | Carbon Steel | Commercial |
| 18 | Bottom Flange | Ductile Iron | GJS500-7 |
| 19 | O-ring | Rubber | NBR |
| 20 | Thrust washer | Bronza | C62300 |
| 21 | Disc Seat | DI+Stainless Steel | GJS500-7+316SS L |
| 22 | Body Seat | Rubber | EPDM |
| 23 | Wedge | Epoxy | Commercial |
| 24 | Worm Gear | Ductile Iron | Commercial |
| For size ≥DN900 | |||
Dimension: