AVK SWING CHECK VALVE, RESILIENT SEATED, PN10/16
Enclosed shaft end
Anthony Whittam
Head of Smart Water and Pressure Management
Resilient seated swing check valve with closed bushings 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 enclosed shaft end or protruding shaft end where a lever with a weight or a spring can be fitted to mitigate pressure surges.
| Variant 41/61-003 | |
|---|---|
| Connection: | Flanged |
| Material: | Ductile Iron |
| DN: | DN50 - DN150 |
| PN: | PN 16 |
Features
- Resilient seat provides a drop tight closure and due to the light weight it requires a minimum of force to open/close
- Shaft fitted in the bonnet allowing for easy maintenance without removing valve from pipeline
- Shaft material 1.4021 (AISI 420) stainless steel
- Hinge in stainless steel for sizes ≤ DN 200; ductile iron coated with drinking water approved epoxy for larger
- Bonnet gasket lying in a groove between bonnet and body prevents blow-out
- All seals and coatings with contact to the fluid are approved for drinking water
- 250 µm fusion bonded epoxy coating
- Disc is designed with a steel or ductile iron insert fully vulcanized with EPDM rubber
- Bosses on each side of the valve seat allow for installation of pressure gauge, by-pass, etc.
- WRAS approved materials
Downloads
| AVK_swing_check_valve_animation.mp4 |
Reference nos. and dimensions:
| Ref. no. | DN mm |
Flange drillling |
L mm |
H3 mm |
W mm |
W1 mm |
Theoretical weight/kg |
|---|---|---|---|---|---|---|---|
| 41-050-61-018 | 50 | PN10/16 | 200 | 197 | 165 | 191 | 12 |
| 41-065-61-018 | 65 | PN10/16 | 240 | 222 | 185 | 191 | 15 |
| 41-080-61-018 | 80 | PN10/16 | 260 | 230 | 200 | 191 | 17 |
| 41-150-61-018 | 150 | PN10/16 | 400 | 348 | 285 | 273 | 42 |
Components
| 1. | Nut | Stainless steel A4 |
| 2. | Bolt | Stainless steel A4 |
| 3. | Washer | Stainless steel A4 |
| 4. | Spacer | PA |
| 5. | Disc | Steel S235JR |
| 6. | Washer | Stainless steel A2 |
| 7. | Bolt | Stainless steel A2 |
| 8. | Hinge | Stainless steel 316 |
| 9. | Bonnet gasket | EPDM |
| 10. | Key | Stainless steel A4 |
| 11. | Washer | Stainless steel A4 |
| 12. | Bolt | Stainless steel A4 |
| 13. | Body | Ductile Iron GJS-500-7 |
| 14. | Bushing | DZR brass |
| 15. | O-ring | EPDM |
| 16. | O-ring | EPDM |
| 17. | Shaft | Stainless steel 420 |
| 18. | Bonnet | Ductile Iron GJS-500-7 |
Test/Approvals
- Belgaqua approved material
Standards
- Designed according to EN 1074 - 3
- Face to face according to EN 558 Table 2 Basic Series 48
- Standard flange drilling to EN1092, PN 10/16
