AVK DUCTILE IRON TILTING DISK CHECK VALVE, PN25
AISI316L seat/soft seal EPDM, EN 558/14, AISI420 shaft, bronze bearing, blue FBE coating, CL8.8 bolts. Lever/counterweight S355JR
Contact
AVK Saudi Valves
Jeddah Industrial City, Phase 4, Street no 45 P.O. Box 10830, 21443 Jeddah 24/7 Leakage Repair Service +966 50 595 5166
Tilting disc, resilient seat check valve with lever and weight for drinking water and other neutral liquids to max. 50°C. Not for sea water or other liquids with high chloride content.
AVK tilting disc check valves are installed in pumping applications to prevent backflow in the system. All interior parts are stainless steel or coated with drinking water approved epoxy. Measures are available to mitigate pressure surges like a lever and a weight fitted to the shaft end to help close the valve before the flow changes direction or a hydraulic damper that makes sure the disc does not slam into the seat and cause water hammer.
| Variant 874/00-005 | |
|---|---|
| Connection: | Flanged |
| Material: | Ductile iron |
| PN: | PN 25 |
Features
- Soft seal against a stainless steel seat provides drop tight closure
- Tilting disc - when adjusted accordingly requires very low pressure to open
- Short face-to-face dimension
- Shaft in stainless steel
- Bronze radial bearings
- Adjustable lever and weight to assist the valve when closing to avoid water hammer - acts also as position indicator
- All seals and coatings with contact to the medium are approved for drinking water
Downloads
Components
| 1. | Bolt | Steel gr. 8.8, zinc plated |
| 2. | Cover | Ductile iron EN GJS-500-7 |
| 3. | Bearing | Bronze CC491K |
| 4. | Stem | Stainless steel 1.4021 (420) |
| 5. | Disc | Ductile iron GJS-500-7 (GGG-50) |
| 6. | Body | Ductile iron GJS-500-7 (GGG-50) |
| 7. | Key | Steel |
| 8. | Drive shaft | Stainless steel 1.4021 (420) |
| 9. | O-ring | EPDM rubber |
| 10. | Cover | Bronze CC491K |
| 11. | Key | Steel |
| 12. | Cover | |
| 13. | Screw | Stainless steel A2-70 |
| 14. | Seal retainer ring | Ductile iron EN GJS-500-7 |
| 15. | Seal ring | EPDM rubber |
| 16. | Stainless steel 316L | |
| 17. | Stopper | Steel |
| 18. | Bolt | Steel gr. 8.8, zinc plated |
| 19. | Counter weight | |
| 20. | Lever |
Test/Approvals
- Tested according to EN12266-1.
Standards
- Designed according to EN 1074 - 3
- Face to face according to EN 558 Table 2 Basic Series 14
- Standard flange drilling to EN1092-2 (ISO 7005-2), PN 25