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Official UK partner of Liverani
Our VA & INV Flexible Impeller Pumps is ideal for transfer, filling, dosing and filtration applications that require variable speed control. It can handle not only clean, light fluids but also viscous, solids-laden slurries, with solids-passage capabilities up to 25mm.
The VA Series can adjust its speed via its integral mechanical variator, which changes the gearbox’s mechanical output speed.
Typical applications include:
| Max Capacity (m³/hr) | 72m³/hr |
| Max Pressure (m) | 40m |
| Max Temperature (°C) | 100°C |
| Max Viscosity (cP) | 50 cP |
| Self-Priming | Up to 6m |
The VA and INV Series flexible impeller pumps are self-priming positive displacement pumps designed for efficient transfer of a wide range of liquids.
The VA Series uses an integral mechanical variator to provide adjustable flow rates for applications where precise control is not essential, while the INV Series offers highly accurate, infinitely variable speed control via a pre-wired inverter panel.
Supplied with advanced features including remote operation, dry-run protection, and compatibility with additional control accessories, the INV Series is ideal for demanding applications requiring precise flow management.
Power options include 230V single-phase or 230–400V three-phase supplies.
A custom system using Flexible Impellers for creating faux leather with green waste.
What a Flexible Impeller Pump is, how it works, and how it can be used for your sector.
A mobile pump solution to fill and empty tanks for non-alcoholic botanical drinks.
This pump operates by the rotation of the internal shaft, which causes the flexible impeller to bend against the casing, pushing fluids and solids out of the discharge port.
A Centrifugal Pump is a Rotodynamic pump that passes energy from the motor to the liquid, which forces the fluid out of the discharge port. The Impeller Pump is a Positive Displacement Pump that traps small amounts of liquid and forces it from the suction to the discharge port.
The VA and INV ranges are designed for applications requiring variable speed control. The VA series uses a mechanical variator to change gearbox output speed, suitable where precise flow control is not critical. The INV series uses an inverter panel for infinitely variable motor speed, remote control, dry-run protection, and the widest and most accurate flow adjustment.
The VA & INV ranges are used across industries including food processing, dairy, brewery, distillery, cosmetics, pharmaceuticals, chemicals, wastewater treatment, oils, sludges, slurries, paints, and glues.
Yes, they can self-prime up to 6m suction lift from dry.
No. Running dry can damage the impeller or seal. The INV series includes built-in dry-run protection, but the VA series does not. For VA pumps, protective measures should be considered if dry-running is a risk.