Linear Dispacement Pump (LDP) &
Cross Over Valve (XV4)
The patented technology is based on its Fluidic’s Linear Displacement Pump (LDP) and Cross-Over Valve (XV4). The positive displacement double-acting rod pumps are powered by closed loop programmable logic controlled (PLC) servo motor drives. The combination of the robust positive displacement metering pumps with electronic motion control provides precision fluid flow control permitting a wide range of dispensing parameters:
Continuous Metered Flow: ....................................................Virtually pulse-free fluid flow
Multiple Axis Metering: ..................................1, 2 or 3 components standard; 4+ optional
Mix Ratios: ...........................................................1 to 100:1 (+/-1%) metering accuracy
Precision Flow Control: ...............................................Robotic flow 1cc/min. to >gal/min.
Viscosity Range: .........................................<1cps to heavy non-flow abrasive compounds
Pressure Range: .................................................................................1psi to 3,500psi
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* Note: Does not work with Windows Explorer
Unlike piston, gear, and progressive cavity pumps, LDP’s have no slip factor (bypass) regardless of the fluid pressure. The LDP metering accuracy is unaffected by viscosity variations and do not require calibration. LDP’s have no pistons to wear out which eliminates the possibility of material slip. Since the pump rods do not contact the cylinder wall, pump wear is minimized. The rod simply displaces its own volume regardless of fluid viscosity or abrasiveness of the compound.
The pump cylinder fill and dispenses from a single port. The Fluidic’s patented 4-way cross-over valve (XV4) redirects fill and dispense port orientations during pump reciprocations. This design eliminates check valves that act metering accuracy when they malfunction. The XV4 allows pressure balancing (inlet/outlet pressures) of the double acting LDP resulting in pulse-less continuous metered flow during pump reciprocations.
