AVK FIXED CONE DISCHARGE VALVE
Shaft and wormgear operated, PN 16, DN 400-2200
Greg Morris
Business Development Manager Dams, Reservoirs & Hydro
Fixed cone shaft-worm gear-sleeve operated discharge valve for drinking water and neutral liquids to max. 70°C
The AVK fixed cone (Howell-Bunger) discharge valves are designed to safely dissipate the surplus energy from large amounts of rapidly flowing water. Installed at the outlet of dams or reservoirs and discharging directly into the atmosphere, they operate safely minimizing erosion or other damage to the suroundings.
| Variant 857/1-002 | |
|---|---|
| Connection: | Flanged |
| Material: | Ductile Iron |
| PN: | PN 10 |
Features
- End of line installation, for high volume dam or reservoir discharge
- Hydraulic balance, no differential loads, low operating effort, small actuator
- Resilient seal for drop-tight shut off
- Effective dissipation of the flowing water kinetic energy before it strikes any boundary surface, minimum wear/erosion, no cavitation risk
- Acid proof stainless steel sleeve with epoxy coated ductile iron components for high corrosion resistance
-
Single piece casted body for rigidity and strength, downstream end is formed as an inverted cone for dissipation of water energy
-
The worm and double bevel gear units are all totally enclosed grease filled assemblies, designed for long periods of maintenance free service
- l Profile sealing ring replaceable without disassembling the valve from the pipeline
- Fine screw thread for slow speed operation and fine adjustment, good positioning and gradual flow change
Downloads
Datasheet
Installation, Operation & Maintenance
Product Brochure
Price list
Components
| 1. | Stud bolt | Stainless steel A4-70 |
| 2. | Washer | Stainless steel 1.4401 |
| 3. | Lift bracket | Stainless steel 1.4301 |
| 4. | Bolt | Stainless steel A4-70 |
| 5. | Lock washer | Stainless steel A4-70 |
| 6. | Body | Ductile iron GJS-500-7 |
| 7. | Guide strip upstream | Alu-bronze CW307G |
| 8. | Sealing strip | Neoprene |
| 9. | Rivet Pin | Bronze PB102 |
| 10. | Sleeve | Stainless steel 1.4401 |
| 11. | Face ring seal | NBR rubber |
| 12. | Screw | Stainless steel A4-70 |
| 13. | Seal retainer ring | Ductile iron GJS-500-7 |
| 14. | Lift bracket | Stainless steel 1.4301 |
| 15. | Indicator plate | Stainless steel 1.4401 |
| 16. | Nipple | Brass CW602N |
| 17. | Gear unit | Cast steel |
| 18. | Key | Stainless steel 1.4401 |
| 19. | Drive shaft, LH | Alu-bronze CC333G |
| 20. | Bracket side gearbox | Steel S275JR |
| 21. | Backing plate bracket | Stainless steel 1.4401 |
| 22. | Backing plate nut | Stainless steel 1.4401 |
| 23. | Drive nut, LH | Stainless steel 1.4401 |
| 24. | Lock nut | Stainless steel 1.4401 |
| 25. | Bushing | Alu-bronze CW307G |
| 26. | Protection cover | PVC |
| 27. | Gearbox housing | Ductile iron GJS-500-7 |
| 28. | Bracket main gearbox | Steel S275JR |
| 29. | Universal joint 30/30 | Stainless steel 1.4301 |
| 30. | Jubilee clip | Stainless steel 1.4401 |
| 31. | Transfer shaft | Stainless steel 1.4401 |
| 32. | Universal joint 30/15 | Stainless steel 1.4301 |
| 33. | Cover | Rubber |
Test/Approvals
-
Seat: 1.1 x PN (in Bar), Body: 1.5 x PN (in Bar). Closing torque test.
Standards
- Standard flange drilling to EN1092, PN 10/16