AVK METAL SEATED SINGLE DOOR SWING CHECK VALVE
SS hinge pin, gunmetal seat, lever and weight with guard, DN 700-1000, PN 16
Anthony Whittam
Head of Smart Water and Pressure Management
Single door swing check valve for drinking water, waste water and neutral liquids to max. 70° C
AVK series 641 swing check valves are designed to automatically prevent flow reversal and serve as backflow preventers in potable water or backwater valves in waste water applications. The free shaft swing check valves are quick acting and require very little forward pressure to open. Optionally a lever with a weight can be fitted to the disc shaft.
| Variant 641/01-005 | |
|---|---|
| Connection: | Flanged |
| Material: | Ductile Iron |
| DN: | DN700 - DN1000 |
| PN: | PN 16 |
Features
Metal seated
Low forward pressure loss
Suitable for both drinking water and waste water
Fully automatic operation
Removable cover on top of valve body to facilitate internal inspection of bearings and movement of door
Bypass valve can be added to aid priming of pumps
Lever and weight helps mitigate slamming
Body, weight, cover, lifter plate, lifter, disc and gland flange of ductile iron with two pack epoxy dark blue externally and light blue internally according to WRAS
Downloads
Reference nos. and dimensions:
| Ref. no. | DN mm |
L mm |
H1 mm |
H2 mm |
W mm |
W1 mm |
Theoretical weight/kg |
|---|---|---|---|---|---|---|---|
| 641-0700-01-160000 | 700 | 1200 | 520 | 1455 | 1372 | 355 | 1655 |
| 641-0800-01-160000 | 800 | 1400 | 610 | 1507 | 1492 | 400 | 2020 |
| 641-0900-01-160000 | 900 | 1400 | 610 | 1603 | 1492 | 400 | 2056 |
| 641-1000-01-160000 | 1000 | 1750 | 725 | 1860 | 1756 | 440 | 3877 |
Components
| 1. | Body | Ductile Iron GJS-500-7 |
| 2. | Weight | Ductile Iron GJS-500-7 |
| 3. | Lever | Stainless steel 1.4401 |
| 4. | Packing | PTFE |
| 5. | Cover | Ductile Iron GJS-500-7 |
| 6. | Bush | Alu-bronze CW307G |
| 7. | Bush | Alu-bronze CW307G |
| 8. | Lifter plate | Ductile Iron GJS-500-7 |
| 9. | Lifter | Ductile Iron GJS-500-7 |
| 10. | Disc | Ductile Iron GJS-500-7 |
| 11. | Castle nut | Stainless steel A4 |
| 12. | Split pin | Stainless steel A4 |
| 13. | Washer | Stainless steel A4 |
| 14. | Bolt | Stainless steel A4 |
| 15. | Shaft | Stainless steel 1.4057 |
| 16. | Collar | Alu-bronze CC331G |
| 17. | Gland | Alu-bronze CW307G |
| 18. | Gland flange | Ductile Iron GJS-500-7 |
| 19. | Bracket for guard | Carbon steel |
| 20. | O-cord | EPDM |
| 21. | Seat ring | Bronze CC491K |
| 22. | Face ring | Bronze CC491K |
| 23. | Air plug | Stainless steel |
| 24. | Distance piece | Stainless steel 1.4057 |
| 25. | Guard | Mild steel |
Test/Approvals
- Seat: 1.1 x PN. Body: 1.5 x PN.
Standards
- Designed according to manufacturer standard
- Face to face Length in Accordance with Manufacturers Standard
- Standard flange drilling to EN1092 (ISO 7005-2), PN 16
- WIMES 8.09 Compliant
- Drinking Water Inspectorate Regulation 31 compliant