AVK SWING CHECK VALVE, PN 10/16
Resilient seated, with free shaft end
Anthony Whittam
Head of Smart Water and Pressure Management
Swing check valve with free shaft end 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 41/60-003 | |
|---|---|
| Connection: | Flanged |
| Material: | Ductile Iron |
| DN: | DN65 - DN200 |
| PN: | PN 16 |
Features
- Clear way and full bore for low head loss and easy pig-cleaning
- 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 in 1.4021 (AISI 420) acid resistant stainless steel
- Free protruding shaft end for mounting of lever and weight or spring to assist valve closing and avoid water hammer
- Hinge of stainless steel for sizes ≤ DN 200; ductile iron coated with drinking water approved epoxy for larger
- Ductile iron disc covered with drinking water approved EPDM
- 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 - coating is blue, 250µm fusion bonded epoxy
- Disc is designed with a steel 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 |
Theoretical weight/kg |
|---|---|---|---|---|---|---|
| 41-065-60-018 | 65 | PN10/16 | 240 | 222 | 235 | 16 |
| 41-080-60-018 | 80 | PN10/16 | 260 | 230 | 240 | 20 |
| 41-100-60-018 | 100 | PN10/16 | 300 | 255 | 260 | 21 |
| 41-125-60-018 | 125 | PN10/16 | 350 | 341 | 332 | 36 |
| 41-150-60-018 | 150 | PN10/16 | 400 | 348 | 338 | 51 |
| 41-200-60-018 | 200 | PN16 | 500 | 412 | 393 | 83 |
Components
| 1. | Nut | Stainless steel A4 |
| 2. | Bolt | Stainless steel A4 |
| 3. | Washer | Stainless steel A4 |
| 4. | Spacer | PA |
| 5. | Disc | |
| 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. | O-ring | NBR rubber |
| 15. | Bushing, open | DZR brass |
| 16. | O-ring | NBR rubber |
| 17. | Shaft | Stainless steel 420 |
| 18. | Bonnet | Ductile Iron GJS-500-7 |
| 19. | Bushing, closed | DZR brass |
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 (ISO 7005-2), PN 10/16
