Liberty Process Pumps

Liberty Process specializes in progressive cavity pumping for viscous liquids, sludge, slurries, and other difficult materials. Applications include wastewater, chemical processing, food production, and industrial transfer.

A helical rotor turns within a matching stator, forming cavities that move liquid from inlet to discharge. The progressing cavities provide positive displacement flow through the pump.

The cavity geometry can move viscous material without relying on high impeller speed. Inlet feeding, product viscosity, and motor torque still determine achievable performance.

Suitable progressive cavity pumps can transfer sludge and solids-containing mixtures. Solids concentration, particle size, abrasiveness, and available suction conditions must be included in selection.

Progressive cavity action can provide relatively gentle transfer at appropriate speeds. Product testing may be needed where texture, particle integrity, or viscosity changes are critical.

Their displacement per revolution can support controlled feed when properly selected. Actual accuracy depends on speed control, internal slip, wear, pressure, and calibration.

Flow generally increases with speed within the operating limits. Excessive speed can worsen wear or inlet filling, especially with abrasive or highly viscous materials.

The stator forms the stationary internal geometry around the rotor. Its fit and material affect sealing, performance, chemical compatibility, and resistance to operating temperature.

Evaluate the process chemical, concentration, temperature, cleaning agents, and abrasive content. An elastomer that handles one fluid may swell, harden, or deteriorate in another.

Many designs depend on liquid to lubricate and cool rotor-stator contact. Dry operation can damage the stator quickly, so follow the manual and consider suitable dry-run protection.

A positive displacement pump can continue building pressure against a restriction. Provide appropriate pressure protection and controls based on the pump, piping, and process requirements.

Provide flow, pressure, viscosity, temperature, solids details, and suction conditions. Also identify whether the product requires hopper feeding or other assistance entering the pump.

Liberty Process offers progressive cavity pumps and replacement parts. Confirm exact part compatibility, dimensions, materials, and operating requirements rather than assuming all similar-looking components interchange.

Inspect the rotor, stator, seals, joints, and drive components as applicable. Monitor flow at a known speed and pressure to identify wear and declining efficiency.

Compare rotor-stator wear, drive condition, repair scope, and current process needs. A replacement may be preferable when the original configuration no longer suits the material.

Call Industrial Air Services at (615) 641-3100 with fluid properties, required flow and pressure, and existing equipment details to discuss selection or replacement requirements.