AVK SWING CHECK VALVE, RESILIENT SEATED
Lever & Weight, AS 2129 Table D/E, PN16, DN50
Contact
AVK Australia Civil
559A Grand Junction Road Wingfield SA 5013 Sales and Technical enquiry
Resilient seated swing check valve to EN 1074 standard. For drinking water and neutral liquids to max. 60°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 41/22-002 | |
|---|---|
| Connection: | Flanged |
| Material: | Ductile Iron |
| DN: | DN50 |
| PN: | PN10/16 |
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 1.4404 (AISI 316L) stainless steel
- Position indicating lever with an adjustable weight that aids the disc in closing quickly to reduce water hammer
- Hinge of stainless steel.
- Bonnet gasket in a groove between bonnet and body to prevent blow-out
- All seals and coatings with contact to the fluid are approved for drinking water - coating is blue, 300µm fusion bonded epoxy
- Disc design 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.
Downloads
| AVK_swing_check_valve_animation.mp4 |
Reference nos. and dimensions:
| AVK ref. no. | DN mm |
Flange drilling |
L mm |
H mm |
W1 mm |
D mm |
Dt mm |
Dh mm |
Ds mm |
Number of bolts |
Theoretical weight/kg |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 41-050-22-028 | 50 | AS 4087 B5 | 203 | 120 | 143 | 165 | 98 | 114 | 18 | 4 | 15 |
Components
| 1. | Bolt | Stainless steel A4 |
| 2. | Nut | Stainless steel A4 |
| 3. | Washer | Stainless steel A4 |
| 4. | Bushing | Polyamide |
| 5. | Disc | Steel S235JR |
| 6. | Body | Ductile iron GJS-500-7 (GGG-50) |
| 7. | Gasket | EPDM rubber |
| 8. | Bolt | Stainless steel A4 |
| 9. | Pin | Stainless steel A4 |
| 10. | Hinge | Stainless steel 316 |
| 11. | Key | Stainless steel A4 |
| 12. | Bonnet | Ductile iron GJS-500-7 (GGG-50) |
| 13. | Washer | Stainless steel A4 |
| 14. | Thrust plate | Stainless steel |
| 15. | Bushing, closed | Brass, DZR |
| 16. | Tab washer | Stainless steel A4 |
| 17. | Bolt | Stainless steel A4 |
| 18. | Shaft | Stainless steel 316L |
| 19. | O-ring | EPDM rubber |
| 20. | O-ring | EPDM rubber |
| 21. | Bushing, open | Brass, DZR |
| 22. | O-ring | EPDM rubber |
| 23. | Lever | Ductile iron GJS-500-7 (GGG-50) |
| 24. | Washer | Stainless steel A4 |
| 25. | Nut | Stainless steel A4 |
| 26. | Weight | Cast iron GJL-250 (GG-25) |
| 27. | Screw | Stainless steel A4 |
Test/Approvals
- Approved according to WRAS Certificate No. 1811031 Ser. 41
Standards
- Designed to: EN 1074-3
- Face to face according to EN 558 Table 2 Basic Series 10
- Flange drilling: AS/NZS 4087 B5
