Mucon Oyster Feeder Valve Controls Flow
Valve: Mucon Oyster™ High Volume Feeder Valve
Material: Pharmaceutical powders
Location: Belgium
Application:
• Feeder valve capable of discharging 88 Ltrs of product in 20 seconds
• Tri-clamp end connections to fit 12” ferrules
As drive speed increases, the rate of increase of the discharge volume of a feeder valve decreases, as the pockets fill and empty less efficiently. For high volume discharge, there is no alternative to having a large rotor.
| 6″ | 8″ | 10″ | 12″ | 14″ | |
| Nominal Valve Size: | 150 | 200 | 250 | 300 | 350 |
| Volume transferred per cycle: (6 pockets) cc3 | 1.230 | 3.300 | 6.854 | 12.286 | 17.888 |
| Density of product | 0.50 | 0.50 | 0.50 | 0.50 | 0.50 |
| Theoretical weight transferred per cycle (gr.) | 615 | 1.650 | 3.427 | 6.143 | 8.944 |
| Nominal cycles/min. (suggested MAX speed) | 35 | 30 | 25 | 20 | 18 |
| Notional Eff. Ratio | 80% | 80% | 80% | 80% | 80% |
| Estimated weight (Kg) per Hour | 1.034 | 2.376 | 4.112 | 5.897 | 7.728 |
| Estimated Volume in 20s (Ltr) | 11 | 26 | 46 | 66 | 86 |
In the case in question, it was clear that nothing less than a DN350mm rotor would meet the client’s requirements but this had to be shoehorned into a 12” chute.
The Solution: Making use of the fact that the inside surfaces of the Mucon Oyster™ Feeder valve are machined spherical to match the shape of the rotor and assure full control of product flow at all times, the team designed a custom-built Feeder valve with DN350 rotor and 12” Tri-clamp end connections.
High precision CNC machining of the valve body and the rotor ensured a close fit between the rotor blades and the valve body. This was possible owing to the careful choice of a highly stable PEEK material for the drive bushings.
All wetted parts were polished to a high mirror finish.
The Results: The use of the Mucon Oyster™ High Volume Feeder Valve enabled the client to achieve the discharge volumes of a substantially larger valve at acceptable drive speeds while retaining the same nominal passage size.
