AVK DOUBLE ORIFICE AIR RELIEF VALVE, PN10/16
stainless steel float (AISI316), ABS guide and seat, A4 bolts, 300µm coating
Contact
AVK Saudi Valves
Jeddah Industrial City, Phase 4, Street no 45 P.O. Box 10830, 21443 Jeddah 24/7 Leakage Repair Service +966 55 909 9395
Air relief valve for drinking water (not wastewater) and neutral liquids max. 70° C
AVK series 851 double orifice, triple action air valves are designed to allow air to rapidly either escape or enter the pipe system when filling or draining, as well as for automatic discharge of accumulated air during normal working conditions. The unique ‘Aerokinetic’ design allows air to rush out of the system at great speed without forcing the float upwards and closing it prematurely. This makes sure that the valve closes only after all air has left the system and water has entered the chamber.
All iron components are protected with fusion bonded epoxy coating in a GSK-approved process to ensure high durability. All other components are made of either WRAS approved polymer material or stainless steel to reduce corrosion risk even further. All seals are made of WRAS approved EPDM rubber featuring an excellent compression set and ability to regain its original shape.
| Variant 851/42-005 | |
|---|---|
| Connection: | Flanged |
| Material: | Ductile iron |
| DN: | DN50 - DN200 |
| PN: | PN 16 |
Features
- A clever float design prevents air rushing out of the system from prematurely closing the valve
- Large air flow capacity
- All iron parts with contact to the water are coated with drinking water approved, fusion bonded epoxy
- The resilient seals are made of EPDM rubber
- All internal parts are either highly corrosion resistant AISI 316 stainless steel or ABS
- No moving parts are touching the internal coating
- The complete product is approved for drinking water
Downloads
Reference nos. and dimensions:
| AVK ref. no. | DN mm |
Flange drilling |
A mm |
D mm |
D1 mm |
H3 mm |
W1 mm |
W6 mm |
Theoretical weight/kg |
|---|---|---|---|---|---|---|---|---|---|
| 851-050-42-122000 | 50 | PN10/16 | 165 | 165 | 50 | 277 | 83 | 220 | 16 |
| 851-080-42-122000 | 80 | PN10/16 | 165 | 200 | 80 | 277 | 83 | 220 | 17 |
| 851-100-42-122000 | 100 | PN10/16 | 205 | 220 | 100 | 283 | 103 | 249 | 23 |
| 851-150-42-122000 | 150 | PN10/16 | 255 | 285 | 150 | 345 | 128 | 287 | 36 |
| 851-200-42-022000 | 200 | PN10 | 255 | 340 | 150 | 345 | 128 | 287 | 40 |
| 851-200-42-122000 | 200 | PN16 | 255 | 340 | 150 | 345 | 128 | 287 | 40 |
Components
| 1. | Float guide top | ABS |
| 2. | Large orifice float | Stainless steel 1.4401 (316) |
| 3. | Float guide bottom | ABS |
| 4. | Seal ring | EPDM rubber |
| 5. | Guide ring | ABS |
| 6. | Seat ring | ABS |
| 7. | Bolt | Stainless steel A4 |
| 8. | Bonnet | Ductile iron GJS-500-7 (GGG-50) |
| 9. | Washer | Stainless steel A4 |
| 10. | Cowl | Ductile iron GJS-500-7 (GGG-50) |
| 11. | Plug | Plastic |
| 12. | Orifice cover | Polyamide |
| 13. | Bonnet | Ductile iron GJS-500-7 (GGG-50) |
| 14. | Gasket | EPDM rubber |
| 15. | O-ring | EPDM rubber |
| 16. | Orifice bracket | Polyamide |
| 17. | Split pin | Stainless steel 304 |
| 18. | Stopper | EPDM rubber |
| 19. | Small orifice float | Stainless steel 1.4401 (316) |
| 20. | Body | Ductile iron GJS-500-7 (GGG-50) |
| 21. | Bolt | Stainless steel A4 |
| 22. | Nut | Stainless steel A4, Delta Seal |
| 23. | Washer | Stainless steel A4 |
| 24. | Bolt | Stainless steel A4 |
| 25. | Nut | Stainless steel A4, Delta Seal |
Test/Approvals
- Hydraulic test according to EN 1074-1 and 2 / EN 12266
- Approved according to WRAS Certificate 1501702
Standards
- Designed according to EN 1074 - 4
- Flange drilling to EN1092-2 (ISO 7005-2), PN10/16
