AVK DOUBLE ECCENTRIC BUTTERFLY VALVE, PN10/16
Integral seat, WRAS appr. sealing, IP67 gearbox, DN700-1200, plate disc, long, AISI 420 shaft
Mamoun Humayra
Water Product Manager
Double eccentric butterfly valve to EN 593 w. integral seat and IP67 gearbox w. handwheel for drinking water and neutral liquids to max. 70°C
AVK double eccentric butterfly valves are designed with tilted and fixated disc for extended service life and easy operation. The disc seal is made of AVK’s drinking water approved EPDM rubber featuring an excellent compression set and thus ability to regain its original shape. The GSK/WRAS approved epoxy coating and fully encapsulated shaft/disc connection ensure high durability. The valves are suitable for bi-directional application.
| Variant 756/118-001 | |
|---|---|
| Connection: | Flanged |
| Material: | Ductile Iron |
| PN: | PN 10/16 |
| Closing direction: | Clockwise to Close |
Features
The tilted disc releases the compression of the disc sealing after a few degrees of opening, which extends the durability and gives low operating torques
The disc is fixated to prevent wear and fluttering
The disc seal profile and rubber quality ensure low closing torques
Seal retainer ring of stainless steel
The threaded bolt holes in the disc are corrosion protected with O-rings
Machined and epoxy coated ductile iron seat integrated in the body
Shaft of stainless steel with self-lubricating bearings
The shaft ends are fully encapsulated in the disc and are fixed with dowels corrosion protected with O-rings and a stainless steel security plate. Key and keyway as backup.
Replaceable shaft sealing with two EPDM O-rings on each side of a bronze bushing, and a flat NBR gasket
Optional locking device
Body and disc of ductile iron with fusion bonded epoxy to DIN 30677-2, GSK approved, RAL 5017, according to WRAS-DVGW/W270/UBA
Downloads
Components
| 1. | Key | Stainless steel A2 |
| 2. | Valve shaft | Stainless steel 420 |
| 3. | Seal housing | Bronze |
| 4. | O-ring | EPDM |
| 5. | O-ring | EPDM |
| 6. | Radial bearing | Bronze/PTFE composite |
| 7. | Disc cover | Stainless steel |
| 8. | Disc cover gasket | EPDM |
| 9. | O-ring | EPDM |
| 10. | Dowel | Stainless steel A2 |
| 11. | O-ring | EPDM |
| 12. | Plug | Steel |
| 13. | Body | Ductile Iron GJS-500-7 |
| 14. | Disc | Ductile Iron GJS-500-7 |
| 15. | Security plate | Stainless steel |
| 16. | Screw | Stainless steel A2 |
| 17. | O-ring | EPDM |
| 18. | Spring Washer | Stainless steel A2 |
| 19. | Washer | Zinc |
| 20. | O-ring | EPDM |
| 21. | Nut | Stainless steel A2 |
| 22. | Washer | Stainless steel A2 |
| 23. | Screw | Stainless steel A2 |
| 24. | Screw | Stainless steel A2 |
| 25. | Thrust bearing | Bronze |
| 26. | Screw | Stainless steel A2 |
| 27. | End plate | Ductile Iron GJS-500-7 |
| 28. | Gasket | EPDM |
| 29. | Stub shaft | Stainless steel 420 |
| 30. | Safety key | Stainless steel A2 |
| 31. | Screw | Stainless steel A2 |
| 32. | Screw | Stainless steel A2 |
| 33. | O-ring | EPDM |
| 34. | Bolt | Stainless steel A2 |
| 35. | Washer | Stainless steel A2 |
| 36. | O-ring | EPDM |
| 37. | Seal retainer ring | Steel |
| 38. | Disc Seal | EPDM |
| 39. | Gearbox | Cast iron |
Test/Approvals
-
Hydraulic test according to EN 1074-1 / EN 12266
Standards
- Designed according to EN 593
- Standard flange drilling to EN1092 (ISO 7005-2), PN 10/16
- WIMES 8.09 Compliant
- Drinking Water Inspectorate Regulation 31 compliant
