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Mucon Oyster Feeder Valve Controls Flow

Valve: Mucon Oyster™ High Volume Feeder ValveMucon VE High Volume Feeder Valve

Material: Pharmaceutical powders

Location: Belgium

•  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.

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