AVK AIR RELIEF VALVE, PN16, WASTE WATER
ABS float/guide/seat, EPDM seal, DN80, Flange drilling: AS/NZS 4087 B5
Contact
AVK Australia Civil
559A Grand Junction Road Wingfield SA 5013 Sales and Technical enquiry
Air relief valve, ABS internal parts, EPDM seals, for sewage, waste water or other contaminated liquids
AVK series 851/50 double orifice, triple action air valves are designed to be installed in waste water and sewage plants to allow air to either escape or enter the pipe system when filling or draining it, as well as for automatic discharge of accumulated air during normal working conditions. The large float chamber keeps the contaminated water at a safe distance from the valve surfaces, ensuring a continued operation with long service intervals. 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 an approved process to ensure high durability. All other components are made of either approved polymer material or stainless steel to reduce corrosion risk even further. All seals are made of approved EPDM rubber.
Variant 851/50-002 | |
---|---|
Connection: | Flanged |
Material: | Ductile Iron |
DN: | DN80 |
PN: | PN16 |
Features
- A clever float design prevents air rushing out of the system from prematurely closing the valve
- Large air flow capacity
- Vented non return (VNR) valve, allows free inflow and restricted outflow
-
Ductile iron parts coated with GSK approved fusion bonded epoxy
-
Internal components are EPDM or ABS, drinking water approved
- No moving parts are touching the internal coating
Downloads
Reference nos. and dimensions:
AVK ref. no. | DN mm |
A mm |
B mm |
C mm |
D mm |
---|---|---|---|---|---|
851-080-50-523000 | 80 | 642 | 421 | 1063 | 534 |
Components
1. | Body | Ductile iron GJS-500-7 |
2. | Cover | Ductile iron GJS-500-7 |
3. | Air valve body | Ductile iron GJS-500-7 |
4. | Air valve cover | Ductile iron GJS-500-7 |
5. | Air valve cowl | Ductile iron GJS-500-7 |
6. | Air valve cover | Ductile iron GJS-500-7 |
7. | Top float | ABS |
8. | Float guide | ABS |
9. | Seal | EPDM rubber |
10. | Ball float | Polycarbonate |
11. | Lever | Polypropylene |
12. | Float elevator | Stainless steel 316 |
13. | Fastener | Stainless steel 316 |
Test/Approvals
- Hydraulic test according to AS 4956: Seat: 1,1 x PN. Body: 1,5 x PN
Standards
- Designed to: AS/NZS 4956
- Flange drilling to AS/NZS 4087 B5