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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AWWA C504 NSF61 Approved Double Flange Double Eccentric Butterfly Valve
Features:
Small platform on the valve body.
Strong protection-keep the sleeve bearing fully in the hole.
No harm to the bearing during operation.
Special Bearing:
Carbon Steel base coated with bronze + PTFE interior for lubricant and tin exterior to prevent rusty.
Stronger than bronze bearing and last longer
Online repairing by EPOXY:
The user only needs to repair the rubber seal from the exterior of the butterfly valve without going into the pipeline. The total repairing time could be around less than 1 hr for all kinds of the size.
Arch shape disc design :
Reduce head loss and minimize turbulence
Flow thru disc-energy saving, lower pumping cost
Rubber Seat:
Epoxy injected on the backside of groove
Dovetail design can tight the rubber seal
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
Operation Torque list for your reference:
| 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: