01
API 609 Double Eccentric Butterfly Valve
Specification
Structre type: double-eccentric Butterfly Valve
Design standard: API 609
Flange connection dimension: ASME B16.5/16.47
Structure length: API 609
Pressure test: API 598
Application
1. The materials of parts are selected excelletly
2.This valve adopts double-eccentric construction. Small friction of Seat and torque during opening orclosing.
3. The disk is trussframed with plates and flow resistant is lower.
4. It has reliable sealing structure for two-way stoping without leakage.
5. The rubberfly sealring could be replaced on pipeline without removing the valve( DN>700)
6. The axle sleeves are selflubricated beaing, oiling is out need and friction drag is small during operation.
Materials
| NO. | Part Name | Material |
| 1 | Bolt | A182 F53 |
| 2 | End Cover | A182 F53 |
| 3 | O-Ring | EPDM/NBR |
| 4 | Bushing | PTFE/Brass |
| 5 | Body | ASTM A890 Grade 6A |
| 6 | Down Stem | A182 F53 |
| 7 | Disc Pin | A182 F53 |
| 8 | Disc | ASTM A890 Grade 6A |
| 9 | Retaining Ring | A182 F53 |
| 10 | Sealing Ring | PTFE/RPTFE |
| 11 | Body Seat | STL6 |
| 12 | Stuffing | PTFE/Graphite |
| 13 | Stuffing Box | Stainless Steel |
| 14 | Up Stem | A182 F53 |
| 15 | Manual Actuator | Assembly |





