Progressive Cavity Pump Systems for Continuous Volumetric Dispensing

Highly controlled volumetric dispensing of one-part and two-part fluids is now possible with EFD’s new 797PCP systems.

Nordson EFD volumetric progressive cavity pump systems can deliver precise, repeatable fluid volumes as small as 0.01 mL per revolution. Deposit volume tolerances equal to +/- 1% allow for a high level of process control in automotive, electronics, medical, and other production applications.

The system includes the 797PCP and 797PCP-2K pumps, and 7197PCP-DIN or ValveMate 7197PCP controllers.

The design of the 797PCP is based on the progressive cavity principal where its core components — a rotor and stator — form a perfectly sealed metering chamber. As it rotates, the pump allows continuous volumetric dispensing that is unaffected by external factors such as changes in viscosity, fluctuating fluid pressure, and the full-to-empty effect in syringe barrels.

This continuous seal also prevents shear and pulsation, making the 797PCP ideal for precise dispensing of abrasive pastes, epoxies, and UV-cure adhesives. The pumps come in three sizes — 0.01 mL, 0.05 mL, and 0.15 mL.

The 797PCP-2K pump provides highly accurate meter mix dispensing of two-part assembly fluids. Its modular design allows for multiple mix ratios.

Both the standard and 2K pumps work best when controlled by either 7197PCP-DIN or ValveMate 7197PCP controllers. These controllers allow for precise adjustment of dispensing parameters. The DIN rail version offers an intuitive web-based interface. The ValveMate version offers an intuitive touchscreen interface. Both provide multiple programming modes, including Line, Volume, Weight, and Timed, to meet a wide range of application requirements

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