SWING CHECK VALVE, RESILIENT SEATED, PN10/16
BS 5153 short, enclosed SS shaft, brass bushings, EPDM, A2 bolts
Contact
Enquiries (Office)
AVK Singapore Pte. Limited, 40 Gambas Crescent Nordcom 2 757018 Singapore Singapore
Resilient seat swing check valve to EN 1074 standard. 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 41/21-001 | |
|---|---|
| Connection: | Flanged |
| Material: | Ductile iron |
| 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 stainless steel 1.4021 (AISI 420)
- Hinge of stainless steel for sizes ≤ DN 200; ductile iron coated with drinking water approved epoxy for larger
- 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
- 250 µm fusion bonded epoxy coating
- Disc design with a steel or ductile iron insert fully vulcanized with drinking water approved EPDM rubber
- Bosses on each side of the valve seat allow for installation of pressure gauge, by-pass, etc.
Components
| 1. | Bolt | Stainless steel A2 |
| 2. | Nut | Stainless steel A2 |
| 3. | Washer | Stainless steel A2 |
| 4. | Bushing | Polyamide |
| 5. | Disc | Steel S235JR |
| 6. | Body | Ductile iron GJS-500-7 (GGG-50) |
| 7. | Gasket | EPDM rubber |
| 8. | Bolt | Stainless steel A2 |
| 9. | Pin | Stainless steel A2 |
| 10. | Hinge | Stainless steel AISI 316 |
| 11. | Key | Stainless steel A2 |
| 12. | Bonnet | Ductile iron GJS-500-7 (GGG-50) |
| 13. | Washer | Stainless steel A2 |
| 14. | Bushing, closed | Brass DZR |
| 15. | Tab washer | Stainless steel A4 |
| 16. | Bolt | Stainless steel A2 |
| 17. | Shaft | Stainless steel AISI 420 |
| 18. | O-ring | EPDM rubber |
| 19. | O-ring | EPDM rubber |
Test/Approvals
- Approved according to WRAS Certificate No. 2312701 to max. 50°C
Standards
- EN 1074-3
- Face-to-face dimension according to EN 558, basic series 10
- Flange Drilling according to EN1092-2
