PCD - Positive Cavity Displacement
PCD Technology
The PCD, no drip, dispense technology moves fluid through small cavities generated when the rotor rotates through the stator.
This technology differs from auger in that the sealed cavities are created. The sealed cavities will not allow low viscosity materials to drip (finger over the straw) and they are positively moved through the stator, thereby eliminating the blow-by effect common with low viscosity fluids or other materials under high pressure.
The rotor is actually wiped by the stator. This wiping action eliminates the crushing or deformation of fillers common with other high impact type dispense technology. By not crushing or damaging the fillers, there is minimal to zero wear within the PCD. Applications such as LED encapsulation will not have deformed fillers which can cause variations in light output.
Advantages of PCD over Auger Technology
With auger technology, fragile fillers can be broken when crushed between the auger and cartridge wall. The breaking also causes excessive wear to the main valve components.
Advantages of PCD over Jet Dispensing
Jetting technology will smash fillers between the oscillating rod and nozzle seat. This impact causes many fillers to be broken and others to smash and accumulate, eventually blocking the nozzle.
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learn how our system will help increase your throughput and decrease your costs.
Fluid Control | Advantages | What is PCD? | Tabletop Operations
