AVK DOUBLE ORIFICE AIR VALVE, PN10/16
EN std. flange, ABS float/ABS guide/ABS seat, EPDM seal, GZ coated A4 fasteners, 300µm blue EP
Contact
AVK Valves Company Hong Kong Ltd.
Unit 803, 8/F, Pilkem Commercial Centre, 8 Pilkem Street, Jordan, Kowloon Hong Kong
Double orifice air relief and vent valve for clean water (not sewage or waste water) and other neutral liquids
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 851/20-003 | |
|---|---|
| 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
-
Ductile iron parts coated with GSK approved fusion bonded epoxy
-
Internal components are EPDM or ABS, WRAS approved
- 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 |
|---|---|---|---|---|---|---|---|---|---|
| 851-050-20-122000 | 50 | PN10/16 | 162 | 165 | 50 | 266 | 81 | 210 | 19 |
| 851-080-20-122000 | 80 | PN10/16 | 222 | 200 | 80 | 345 | 111 | 237 | 32 |
| 851-100-20-122000 | 100 | PN10/16 | 292 | 220 | 100 | 417 | 146 | 255 | 52 |
| 851-150-20-122000 | 150 | PN10/16 | 292 | 285 | 150 | 417 | 146 | 255 | 55 |
| 851-200-20-122000 | 200 | PN16 | 292 | 340 | 150 | 417 | 146 | 255 | 59 |
Components
| 1. | Body | Ductile iron GJS-500-7 (GGG-50) |
| 2. | Float guide bottom | ABS plastic |
| 3. | Float guide top | ABS plastic |
| 4. | Plug | Stainless steel AISI 316 |
| 5. | Float, large orifice | ABS plastic |
| 6. | Guide ring | ABS plastic |
| 7. | Seal ring | EPDM rubber |
| 8. | Seat ring | ABS plastic |
| 9. | Bonnet | Ductile iron GJS-500-7 (GGG-50) |
| 10. | Washer | Stainless steel A4 |
| 11. | Nut | Stainless steel A4, Delta Seal |
| 12. | Bolt | Stainless steel A4 |
| 13. | Cowl | Ductile iron GJS-500-7 (GGG-50) |
| 14. | O-ring | EPDM rubber |
| 15. | Orifice cover | Polyamide |
| 16. | Orifice bracket | Polyamide |
| 17. | Gasket | EPDM rubber |
| 18. | Grooved pin | Stainless steel A4 |
| 19. | Float, small orifice | ABS plastic |
| 20. | Side chamber | Ductile iron GJS-500-7 (GGG-50) |
| 21. | Bolt | Stainless steel A4 |
Test/Approvals
- Hydraulic test according to EN 1074-1 / EN 12266
- Approved according to WRAS certificate 241102017, max. 50°C
Standards
- EN 1074-4
- Flange drilling to EN1092, PN10/16
