AVK SWING CHECK VALVE, METAL SEATED, , DN350-600
Enclosed shaft, PN10/16
Anthony Whittam
Head of Smart Water and Pressure Management
Metal seated swing check valve for drinking water and neutral liquids to max. 70° C
AVK series 41 swing check valves come with both metal and resilient seats. Installed in pumping applications to prevent back flow they can be used for drinking water as well as waste water. The disc is connected to the shaft via a flexible bush that allows disc and valve seat to adjust exactly. All interior parts are stainless steel or coated with drinking water approved epoxy or EPDM. The series 41 valves are available with either closed bushings or protruding shaft end where a lever with a weight or a spring can be fitted to mitigate pressure surges.
| Variant 41/35-001 | |
|---|---|
| Connection: | Flanged |
| Material: | Ductile Iron |
| DN: | DN400 - DN600 |
| PN: | PN 16 |
Features
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Clear way and full bore for low head loss and easy pig-cleaning
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Metal seat in high strength alu-bronze
-
Shaft in 1.4021 (AISI 420) stainless steel fitted in the bonnet allows for easy maintenance without removing valve from pipeline
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Hinge of ductile iron coated with drinking water approved epoxy, firmly tightened around the shaft to eliminate play
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Bonnet gasket lying in a groove between bonnet and body prevents blow-out
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All seals and coatings with contact to the fluid are approved for drinking water - coating is blue, 250µm fusion bonded epoxy
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Disc mounted in a flexible rubber bushing which allows it to tilt slightly in all directions and adjust exactly to the valve seat
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Bosses on each side of the valve seat allow for installation of pressure gauge, by-pass, etc.
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WRAS approved product
Downloads
Reference nos. and dimensions:
| Ref. no. | DN mm |
Flange drillling |
L mm |
H mm |
H3 mm |
W mm |
W1 mm |
Theoretical weight/kg |
|---|---|---|---|---|---|---|---|---|
| 41-400-35-01800 | 400 | PN16 | 900 | 470 | 765 | 650 | 325 | 304 |
| 41-600-35-01800 | 600 | PN16 | 1300 | 630 | 1060 | 894 | 447 | 790 |
Components
| 1. | Body | Ductile Iron GJS-500-7 |
| 2. | Washer | Stainless steel A2 |
| 3. | Nut | Stainless steel A2 |
| 4. | Stud bolt | Stainless steel A2 |
| 5. | Face ring | Alu-bronze CC331G |
| 6. | Seat ring | Alu-bronze CC331G |
| 7. | Bonnet | Ductile Iron GJS-500-7 |
| 8. | Bolt | Stainless steel A2 |
| 9. | O-cord | EPDM |
| 10. | Guide bush | EPDM |
| 11. | Washer | Stainless steel A2 |
| 12. | Split pin | Stainless steel A2 |
| 13. | Castle nut | Stainless steel A2 |
| 14. | Stud bolt | Stainless steel A2 |
| 15. | Hinge arm | Ductile Iron GJS-500-7 |
| 16. | Disc | Ductile Iron GJS-500-7 |
| 17. | Protective bush | EPDM |
| 18. | Washer | Stainless Steel 1.4401 (316) |
| 19. | Bolt | Stainless steel A2 |
| 20. | O-ring | EPDM |
| 21. | Gasket | PA |
| 22. | Air plug | Stainless steel |
| 23. | Shaft | Stainless steel 1.4021 (420) |
| 24. | Connector | Stainless Steel 1.4408 (316) |
| 25. | Spacer | Stainless steel 1.4404 (316L) |
| 26. | O-ring | EPDM |
| 27. | Bushing | Brass CW602N (CZ132) |
Test/Approvals
- Hydraulic test according to EN 1074-1 / EN 12266 |
- Seat: 1.1 x PN. Body: 1.5 x PN.
Standards
- Designed according to EN 1074 - 3
- Face to face according to EN 558 Table 2 Basic Series 48
- Standard flange drilling to EN1092 (ISO 7005-2), PN 10/16