AVK DOUBLE ORIFICE AIR RELIEF VALVE, PN10/16
EN std. flange, ABS float/ABS guide/ABS seat, EPDM seal, A2 bolts, GZ coated A4 nuts
Contact
AVK Philippines Inc.
70 West Avenue Brgy. West Triangle 1104 Quezon City, Philippines
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 851/40-001 | |
|---|---|
| Connection: | Flanged |
| Material: | Ductile iron |
| DN: | DN40 - 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 and the seat is ABS, all drinking water approved
- All other internal parts are 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:
| Reference no. | DN mm |
Flange drilling |
H3 mm |
W mm |
W1 mm |
W6 mm |
Theoretical weight/kg |
|---|---|---|---|---|---|---|---|
| 851-040-40-111000 | 40 | PN10/16 | 277 | 165 | 82 | 220 | 22 |
| 851-050-40-111000 | 50 | PN10/16 | 277 | 165 | 82 | 220 | 22 |
| 851-080-40-111000 | 80 | PN10/16 | 277 | 165 | 82 | 220 | 24 |
| 851-100-40-111000 | 100 | PN10/16 | 283 | 205 | 102 | 248 | 29 |
| 851-150-40-111000 | 150 | PN10/16 | 345 | 255 | 127 | 286 | 42 |
| 851-200-40-111000 | 200 | PN16 | 345 | 255 | 127 | 286 | 46 |
Components
| 1. | Body | Ductile iron GJS-500-7 (GGG-50) |
| 2. | Float, small orifice | ABS plastic |
| 3. | Split pin | Stainless steel 1.4307 |
| 4. | Orifice bracket | Polyamide |
| 5. | Gasket | EPDM rubber |
| 6. | O-ring | EPDM rubber |
| 7. | Bonnet | Ductile iron GJS-500-7 (GGG-50) |
| 8. | Bolt/nut/washer | Stainless steel |
| 9. | Orifice cover | Polyamide |
| 10. | Plug | Plastic |
| 11. | Cowl | Ductile iron GJS-500-7 (GGG-50) |
| 12. | Seat ring | ABS plastic |
| 13. | Seal ring | EPDM rubber |
| 14. | Guide ring | ABS plastic |
| 15. | Float, large orifice | ABS plastic |
| 16. | Float guide | ABS plastic |
Test/Approvals
- Hydraulic test: 1.5 x PN
- Approved according to WRAS certificate 241102017, max. 50°C
Standards
- EN 1074-4
- Flange drilling to EN1092, PN10/16
